Tag: M.W=100-200

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 5187-23-5, Name is (5-Ethyl-1,3-dioxan-5-yl)methanol, molecular formula is , belongs to alcohols-buliding-blocks compound. In a document, author is Hao, Fang, Computed Properties of C7H14O3.

One-step complexed preparation of nitrogen and Cu co-doped oxidative active carbon catalysts Cu-N/OAC for furfural selective hydrogenation with high yield

A facile procedure for preparing copper and nitrogen co-doped active carbon (Cu-N/OAC) by one-step complexed was reported and applied in liquid-phase hydrogenation of furfural (FAL). The facile procedure resulted in high Cu nanoparticles dispersion on OAC with Cu-0 and Cu+ sites and apparently promoted the catalytic activities during furfural hydrogenation reaction. The obtained Cu-N/OAC-800 shows 99.5% FAL conversion with 98.4% selectivity to furfuryl alcohols (FOL) under reaction condition of 150 degrees C, 2 MPa and 6 h. These results indicated that the excellent catalytic performance of the catalyst was due to the synergic effects of nitrogen doping and Cu metal active sites.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 5187-23-5, in my other articles. Computed Properties of C7H14O3.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Quality Control of (4-Chlorophenyl)methanol, 873-76-7, Name is (4-Chlorophenyl)methanol, molecular formula is C7H7ClO, belongs to alcohols-buliding-blocks compound. In a document, author is Shi, Jun, introduce the new discover.

Inhibition effect of methanol addition on carbon deposition in propane pyrolysis

Methanol-mixed fuels consisting of methanol, propane, and a small amount of auxiliary solvent are widely used as inexpensive industrial fuels, but the carbon deposition in the pyrolysis of this fuel seriously restrains its popularization. This paper studied the characteristics of gaseous products and carbon deposition in the pure propane and methanol-propane mixture pyrolysis experimentally, analyzed the effect of methanol addition on the reaction path of propane pyrolysis and production rate of key species by using detailed reaction mechanism. Results show that methanol addition can restrain C2H4 converting to C2H2 in the later stage of pyrolysis. The carbon deposition rate and particle diameter increase exponentially with the increase of reaction temperature in both pure propane and methanol-propane blend pyrolysis. Methanol addition can significantly reduce the carbon deposition rate and particle diameter. The reaction path analysis indicates that the main reaction paths forming benzene are C3H3 -> A1 and C4H4 -> I-C6H6 -> A1, and C3H3 is a key specie to form benzene. The pyrolysis of methanol-propane mixture generates more H-2 and H than that of pure propane pyrolysis, which makes most C3H6 convert to C2H4, reduces the amount of C3H3 and suppresses the conversion of C2H4 to C2H2. And then the amount of benzene is reduced significantly and the generation of subsequent PAHs and carbon deposition is inhibited. Lots of H-2 also restrains the hydrogen abstraction from benzene resulting in the delay of the formation of PAHs and carbon deposition. This study is of great significance to research the soot formation in hydrocarbon combustion with alcohol fuel.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 873-76-7. Quality Control of (4-Chlorophenyl)methanol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Application In Synthesis of Hexane-1,2-diol, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 6920-22-5, Name is Hexane-1,2-diol, molecular formula is C6H14O2. In an article, author is Guo, Xiangyang,once mentioned of 6920-22-5.

Changes of volatile compounds and odor profiles in Wuyi rock tea during processing

Wuyi rock tea (WRT), is one kind of oolong tea and widely appreciated for its typical ‘rock flavor’. The odor characteristics of WRT during processing were comprehensive investigated by gas chromatography-mass spectrometry, sensory evaluation and odor activity value (OAV). Alcohols, alkenes and esters were the main volatiles formed during tea processes, but the WRT contained more heterocyclic compounds, among which 15 N-containing volatiles were newly identified in this study, accounting for 60.52% of total amounts of volatiles in WRT. In response, the original green and chemical odors converted to roasted and woody odors, and full fire processing was effective to enhance roasted, floral and woody odors, weaken chemical odor. 2-Ethyl-3,5-dimethylpyrazine (OAV 4.71) was confirmed as the aroma-active compound of WRT with roasted odor by aroma recombination experiment. In addition, strong roasted, floral and moderate woody odors were perceived as the outline of ‘rock flavor’ in WRT aroma. These results provide theoretical basis for processing and quality control of WRT.

If you¡¯re interested in learning more about 6920-22-5. The above is the message from the blog manager. Application In Synthesis of Hexane-1,2-diol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 873-76-7, Name is (4-Chlorophenyl)methanol, molecular formula is C7H7ClO, belongs to alcohols-buliding-blocks compound. In a document, author is Liu, Zilong, introduce the new discover, Quality Control of (4-Chlorophenyl)methanol.

Reducing anionic surfactant adsorption using polyacrylate as sacrificial agent investigated by QCM-D

Surfactant losses by adsorption to rock surfaces make surfactant-based enhanced oil recovery economically less feasible. We investigated polyacrylate (PA) as a sacrificial agent in the reduction of anionic surfactant adsorption with focus on calcite surfaces by using quartz crystal microbalance with dissipation monitoring. It was found that the adsorption of the anionic surfactant alcohol alkoxy sulfate (AAS) followed a Langmuir adsorption isotherm, and the adsorbed amount reached saturation above its critical micellar concentration. Adsorption of PA was a much slower process compared to AAS adsorption. Increasing the calcium ion concentration also increased the amount of AAS adsorbed as well as the mass increase rate of PA adsorption. Experimental results combined with density functional theory calculations indicated that calcium cation bridging was important for anionic surfactant AAS and PA adsorption to calcite surfaces. To effectively reduce the amount of surfactant adsorption, it was needed to preflush with PA, rather than by a simultaneous injection. Preflushing with 30 ppm of PA gave a reduction of AAS adsorption of 30% under high salinity (HS, 31,800 ppm) conditions, compared to 8% reduction under low salinity (LS, 3180 ppm) conditions. In the absence of PA, the amount of adsorbed AAS was reduced by already 50% upon changing from HS to LS conditions. Lower calcium ion concentrations, as under LS conditions, contributed to this observation. On different mineral surfaces, PA reduced the AAS adsorption in the order of alumina > calcite > silica. These results offer important insights into mitigating surfactant adsorption using PA polyelectrolyte as sacrificial agent and contribute to improved flooding strategies with reduced surfactant loss. (C) 2020 The Author(s). Published by Elsevier Inc.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 873-76-7. Quality Control of (4-Chlorophenyl)methanol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry, like all the natural sciences, Computed Properties of C8H18O5, begins with the direct observation of nature¡ª in this case, of matter.112-60-7, Name is 2,2′-((Oxybis(ethane-2,1-diyl))bis(oxy))diethanol, SMILES is OCCOCCOCCOCCO, belongs to alcohols-buliding-blocks compound. In a document, author is McDonell, Michael G., introduce the new discover.

Effect of Incentives for Alcohol Abstinence in Partnership With 3 American Indian and Alaska Native Communities A Randomized Clinical Trial

IMPORTANCE Many American Indian and Alaska Native communities are disproportionately affected by problems with alcohol use and seek culturally appropriate and effective interventions for individuals with alcohol use disorders. OBJECTIVE To determine whether a culturally tailored contingency management intervention, in which incentives were offered for biologically verified alcohol abstinence, resulted in increased abstinence among American Indian and Alaska Native adults. This study hypothesized that adults assigned to receive a contingency management intervention would have higher levels of alcohol abstinence than those assigned to the control condition. DESIGN, SETTING, AND PARTICIPANTS This multisite randomized clinical trial, the Helping Our Native Ongoing Recovery (HONOR) study, included a 1-month observation period before randomization and a 3-month intervention period. The study was conducted at 3 American Indian and Alaska Native health care organizations located in Alaska, the Pacific Northwest, and the Northern Plains from October 10, 2014, to September 2, 2019. Recruitment occurred between October 10, 2014, and February 20, 2019. Eligible participants were American Indian or Alaska Native adults who had 1 or more days of high alcohol-use episodes within the last 30 days and a current diagnosis of alcohol dependence. Data were analyzed from February 1 to April 29, 2020. INTERVENTIONS Participants received treatment as usual and were randomized to either the contingency management group, in which individuals received 12 weeks of incentives for submitting a urine sample indicating alcohol abstinence, or the control group, in which individuals received 12 weeks of incentives for submitting a urine sample without the requirement of alcohol abstinence. Regression models fit with generalized estimating equations were used to assess differences in abstinence during the intervention period. MAIN OUTCOMES AND MEASURES Alcohol-negative ethyl glucuronide (EtG) urine test result (defined as EtG<150 ng/mL). RESULTS Among 1003 adults screened for eligibility, 400 individuals met the initial criteria. Of those, 158 individuals (39.5%; mean [SD] age, 42.1 [11.4] years; 83 men [52.5%]) met the criteria for randomization, which required submission of 4 or more urine samples and 1 alcohol-positive urine test result during the observation period before randomization. A total of 75 participants (47.5%) were randomized to the contingency management group, and 83 participants (52.5%) were randomized to the control group. At 16 weeks, the number who submitted an alcohol-negative urine sample was 19 (59.4%) in the intervention group vs 18 (38.3%) in the control group. Participants randomized to the contingency management group had a higher likelihood of submitting an alcohol-negative urine sample (averaged over time) compared with those randomized to the control group (odds ratio, 1.70; 95% CI, 1.05-2.76; P = .03). CONCLUSIONS AND RELEVANCE The study's findings indicate that contingency management may be an effective strategy for increasing alcohol abstinence and a tool that can be used by American Indian and Alaska Native communities for the treatment of individuals with alcohol use disorders. Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 112-60-7. Computed Properties of C8H18O5.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Recommanded Product: 4,4,5,5,5-Pentafluoropentan-1-ol, 148043-73-6, Name is 4,4,5,5,5-Pentafluoropentan-1-ol, molecular formula is C5H7F5O, belongs to alcohols-buliding-blocks compound. In a document, author is Bach, Patrick, introduce the new discover.

Plasma calcium concentration during detoxification predicts neural cue-reactivity and craving during early abstinence in alcohol-dependent patients

Recent studies on the pathophysiology of alcohol dependence suggest a link between peripheral calcium concentrations and alcohol craving. Here, we investigated the association between plasma calcium concentration, cue-induced brain activation, and alcohol craving. Plasma calcium concentrations were measured at the onset of inpatient detoxification in a sample of N = 115 alcohol-dependent patients. Alcohol cue-reactivity was assessed during early abstinence (mean 11.1 days) using a functional magnetic resonance imaging (fMRI) alcohol cue-reactivity task. Multiple regression analyses and bivariate correlations between plasma calcium concentrations, clinical craving measures and neural alcohol cue-reactivity (CR) were tested. Results show a significant negative correlation between plasma calcium concentrations and compulsive alcohol craving. Higher calcium levels predicted higher alcohol cue-induced brain response in a cluster of frontal brain areas, including the dorsolateral prefrontal cortex (dlPFC), the anterior prefrontal cortex (alPFC), and the inferior (IFG) and middle frontal gyri (MFG). In addition, functional brain activation in those areas correlated negatively with craving for alcohol during fMRI. Higher peripheral calcium concentrations during withdrawal predicted increased alcohol cue-induced brain activation in frontal brain areas, which are associated with craving inhibition and cognitive control functions. This might indicate that higher plasma calcium concentrations at onset of detoxification could modulate craving inhibition during early abstinence.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 148043-73-6. Recommanded Product: 4,4,5,5,5-Pentafluoropentan-1-ol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Recommanded Product: 3,5,5-Trimethylhexan-1-ol, 3452-97-9, Name is 3,5,5-Trimethylhexan-1-ol, molecular formula is C9H20O, belongs to alcohols-buliding-blocks compound. In a document, author is Ma, Qixin, introduce the new discover.

An experimental assessment on low temperature combustion using diesel/ biodiesel/C2, C5 alcohol blends in a diesel engine

Alcohol additives in Diesel-Biodiesel (DB) blends were investigated on a modified single cylinder diesel engine with exhaust gas recirculation (EGR). The effects of lower and higher alcohol contents (10% ethanol, 20% ethanol and 10% pentanol by volume) with various EGR rates on combustion characteristics and emissions were evaluated. The results indicated that with the increase of EGR rates and increasing fraction of ethanol in DB blends, the ratio of premixed combustion will increase and the ignition delay (ID) will prolong, which lead to the increase of maximum pressure rise rate and peak value of heat release rate. Indicated thermal efficiency (ITE) increased firstly with EGR increasing and then decreased rapidly, but the EGR rates corresponding to the rapid decrease of ITE for the blends will be low compared to pure diesel. The Diesel-Biodiesel-Ethanol (DBE, the lower alcohol) blends showed the best performance on soot emissions among all the tested fuels even though there is no EGR. What’s more, the DBE blends showed better nitrogen oxide (NOx) and carbon monoxide (CO) emissions at high EGR. However, the Diesel-Biodiesel-Pentanol (DBP, the higher alcohol) blends performed better THC emissions. Overall consideration, using diesel/biodiesel/ethanol ternary fuels under medium EGR rates may be a better choice for diesel engines.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 3452-97-9. Recommanded Product: 3,5,5-Trimethylhexan-1-ol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. Quality Control of (4-Chlorophenyl)methanol, 873-76-7, Name is (4-Chlorophenyl)methanol, SMILES is OCC1=CC=C(Cl)C=C1, in an article , author is Wu, Xianwen, once mentioned of 873-76-7.

Na-containing manganese-based cathode materials synthesized by sol-gel method for zinc-based rechargeable aqueous battery

Zinc-based rechargeable aqueous batteries are regarded as one of the most safe and inexpensive energy storage systems compared to the conventional rechargeable batteries with organic electrolytes. However, the limited cathode materials and the problem of associated metal ion dissolution restrict its practical application. Herein, the inexpensive novel cathode materials of Na-containing manganese-based composite of Na0.44MnO2 /Mn2O3 and Na2/3Fe1/2Mn1/2O2 are designed and synthesized correspondingly by sol-gel methods combined with freeze-drying technique, and are applied in the zinc-based aqueous batteries for the first time. The secondary particles of Na0.44MnO2/Mn2O3 composite with a cubic box and the molecular sieve configurations are composed of nano primary particles with about 150-300 nm, and the obtained O3-Na2/3Fe1 /2Mn1/2O2 at 850 degrees C (O3-NFM-850) appears to homogenous distribution with 3D solid block structure and platelet-shaped particles, while the spherical core-shell structure of P2 -Na2/3Fe1/2Mn1/2O2 at 850 degrees C (P3-NFM-850-PVA) after dispersed by poly (vinyl alcohol) are linked to each other by amorphous carbon. Finally, the cathode of Na0.44MnO2/Mn2O3 and P3-NFM-850-PVA deliver the reversible capacities of 68.3 mAh g(-1) and 42 mAh g(-1) even after 200 cycles at 0.4 A/g respectively without capacity fading. Compared to the reported Na0.44MnO2, the increased capacity ofNa(0.44)MnO(2)/Mn2O3 composite is attributed to the possible co-insertion of sodium ion and zinc ion for Na0.44MnO2 and the zinc ion insertion for Mn203 as well, indicating the synergetic energy storage for rechargeable hybrid aqueous battery and aqueous zinc ion battery. While the improved cyclic performance of Na2/3Fe1/2Mn1/2O2 is ascribed to the structural stability by Fe-doping and carbon-coating. (C) 2020 Elsevier B.V. All rights reserved.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 873-76-7, you can contact me at any time and look forward to more communication. Quality Control of (4-Chlorophenyl)methanol.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Reference of 42822-86-6, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 42822-86-6, Name is 2-(2-Hydroxypropan-2-yl)-5-methylcyclohexanol, SMILES is OC1C(CCC(C1)C)C(O)(C)C, belongs to alcohols-buliding-blocks compound. In a article, author is Hu, Xuzhi, introduce new discover of the category.

What happens when pesticides are solubilised in binary ionic/zwitterionic-nonionic mixed micelles?

Hypothesis: Surfactants have been widely used as adjuvants in agri-sprays to enhance the solubility of pesticides in foliar spray deposits and their mobility through leaf cuticles. Previously, we have characterised pesticide solubilisation in nonionic surfactant micelles, but what happens when pesticides become solubilised in anionic, cationic and zwitterionic and their mixtures with nonionic surfactants remain poorly characterised. Experiments: To facilitate characterisations by SANS and NMR, we used nonionic surfactant hexaethylene glycol monododecyl ether (C12E6), anionic sodium dodecylsulphate (SDS), cationic dodecyltrimethylammonium bromide (DTAB) and zwitterionic dodecylphosphocholine (C12PC) as model adjuvant systems to solubilise 3 pesticides, Cyprodinil (CP), Azoxystrobin (AZ) and Difenoconazole (DF), representing different structural features. The investigation focused on the influence of solubilisates in driving changes to the micellar nanostructures in the absence or presence of electrolytes. NMR and NOESY were applied to investigate the solubility and location of each pesticide in the micelles. SANS was used to reveal subtle changes to the micellar structures due to pesticide solubilisation with and without electrolytes. Findings: Unlike nonionic surfactants, the ionic and zwitterionic surfactant micellar structures remain unchanged upon pesticide solubilisation. Electrolytes slightly elongate the ionic surfactant micelles but have no effect on nonionic and zwitterionic surfactants. Pesticide solubilisation could alter the structures of the binary mixtures of ionic/zwitterionic and ionic/nonionic micelles by causing elongation, shell shrinkage and dehydration, with the exact alteration being determined by the molar ratio in the mixture. (C) 2020 Published by Elsevier Inc.

Reference of 42822-86-6, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 42822-86-6.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.105-13-5, Name is (4-Methoxyphenyl)methanol, SMILES is COC1=CC=C(CO)C=C1, belongs to alcohols-buliding-blocks compound. In a document, author is Giteru, Stephen G., introduce the new discover, Product Details of 105-13-5.

Regular Elucidating the pH influence on pulsed electric fields-induced self-assembly of chitosan-zein-poly(vinyl alcohol)-polyethylene glycol nanostructured composites

Hypothesis: The high incompatibility of bio-based materials such as protein and polysaccharides require a series of modifications to develop stable microstructures effectively. By modifying the density and charge of surface residues, pulsed electric fields processing can improve inter/intramolecular interactions, compatibility, and microstructure of bio-based nanostructured composites. Experiment: In this work, the impact of pulsed electric fields at a specific energy of 60-700 kJ/kg (electric field strength = 1.6 kV/cm) on self-assembly of zein-chitosan-poly(vinyl alcohol)-polyethylene glycol composite dispersion was investigated at pH 4.0, 5.7, and 6.8. Findings: Superior complex coacervated matrices were assembled at pH 4.0 and 5.7 before and after pulsed electric fields treatment at a specific energy of 390-410 kJ/kg. The compact and homogenous behaviour was attributable to pulsed electric fields-induced alteration of functional group interactions in a pH-dependent manner. Irrespective of the pH, very high electric field intensity caused excessive system perturbation leading to severe fragmentation and poor development of coacervates. The crucial insights from this study reveal that the self-assembly behaviour and integration of biopolymer-based sys-tems possessing different local charges can be enhanced by optimising pulsed electric fields processing parameters and the properties of the colloidal systems such as the pH. (c) 2020 Elsevier Inc. All rights reserved.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 105-13-5 is helpful to your research. Product Details of 105-13-5.

Reference:
Alcohol – Wikipedia,
,Alcohols – Chemistry LibreTexts