Month: November 2022

On June 15, 2021, Yang, Fan; Xu, Zibo; Huang, Yuandong; Tsang, Daniel C. W.; Ok, Yong Sik; Zhao, Ling; Qiu, Hao; Xu, Xiaoyun; Cao, Xinde published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Stabilization of dissolvable biochar by soil minerals: Release reduction and organo-mineral complexes formation. And the article contained the following:

Biochar has two existing forms in the moist soil environment, free dissolvable biochar (particle size < 0.45μm) and undissolvable particles (particle size > 0.45μm). The release and decomposition of dissolvable biochar from bulk biochar particles is a primary C loss pathway in biochar-amended soils, which would be reduced by their interactions with soil minerals. Most previous studies focused on the effect of feedstock types and pyrolysis conditions on dissolvable biochar stability, while few studies researched the interaction between dissolvable biochar and soil components, for instance the soil minerals, and its effect on the stability of dissolvable biochar. In this study, bentonite and goethite were selected as model soil minerals because of their differences in structure and surface types: neg. charged 2:1 type phyllosilicate (bentonite) and pos. charged crystalline mineral (goethite). Dry-wet cycling was conducted to determine the effect of these two minerals on the release of dissolvable biochar from walnut shell-derived biochar particles. The stability of dissolvable biochar was measured by chem. oxidation and biodegradation Both soil minerals reduced the release of dissolvable biochar by over 34% with the presence of Ca2+. Mechanisms of “Ca2+ bridging”, “ligand exchange” and “van der Waals attraction” contributed to the formation of dissolvable biochar-bentonite complexes, and Ca2+ promoted dissolvable biochar inserting into bentonite interlayer space, expanding D-spacing from 1.25 nm to 1.55 nm. However, “Ca2+ bridging” barely formed on goethite because of charge repulsion, indicating that the dissolvable biochar was bound with goethite mainly by “van der Waals attraction” and “ligand exchange”. Due to organo-mineral complexes formation, the chem. oxidation extent of dissolvable biochar was reduced by 22.8-36.5%, and the biodegradation extent was reduced by 72.7-85.0%, since the soil minerals are more effective to prevent the dissolvable biochar from being biodegraded. This study proved soil minerals and Ca 2+ were beneficial for enhancing biochar stability, these observations assisted in assessing the biochar ability for long-term carbon sequestration. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to biochar soil organo mineral complex reduction stabilization, bentonite, biochar stability, ca(2+) bridging, goethite, intercalated sorption, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Quality Control of 2,4-Di-tert-butylphenol

Referemce:
Alcohol – Wikipedia,
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On March 15, 2022, Ren, Tianhang; Wang, Yan; Wu, Nan; Qing, Yan; Li, Xingong; Wu, Yiqiang; Liu, Ming published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Degradation of urea-formaldehyde resin residues by a hydrothermal oxidation method into recyclable small molecular organics. And the article contained the following:

Urea-formaldehyde (UF) resin residues and the related product wastes as organic hazardous wastes are difficult to be biodegraded or recycled. In this research, a hydrothermal oxidation method using hydrogen peroxide (H2O2) solution has been developed for the degradation and recycling of UF resin residues. The effects of solution concentration, temperature, and time on the degradation efficiency and products of UF resin residues were studied. Under optimal conditions, i.e., 140°C and 5 wt% H2O2 solution, over 75% of UF resin residues was degraded after 3 h. The degradation efficiency is much higher than that of the traditional hydrothermal treatment or acid hydrolysis method. In addition, results from Fourier transform IR spectroscopy (FTIR), gas chromatog.-mass spectroscopy (GC-MS), NMR spectroscopy (NMR), and X-ray diffraction (XRD) confirmed that H2O2 solution degrades UF resin residues to low mol. compounds, such as alcs., methylal, and amides. This research provides a novel and high-efficient hydrothermal oxidization process for the degradation of UF resin residues, which might be a promising environmentally friendly and low-cost method for the disposal and recycling of industrial UF resin residues. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to urea formaldehyde resin hydrothermal oxidation wastewater treatment, harmless disposal, hazardous wastes, hydrogen peroxide, hydrothermal treatment, uf resin, Waste Treatment and Disposal: Chemical Treatment Of Aqueous Wastes and other aspects.Quality Control of 2,4-Di-tert-butylphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

On October 16, 2006, Kato, Keisuke; Matsuba, Chie; Kusakabe, Taichi; Takayama, Hiroyuki; Yamamura, Shigeo; Mochida, Tomoyuki; Akita, Hiroyuki; Peganova, Tat’yana A.; Vologdin, Nikolai V.; Gusev, Oleg V. published an article.Category: alcohols-buliding-blocks The title of the article was 2,2′-Isopropylidenebis[(4S,5R)-4,5-di(2-naphthyl)-2-oxazoline] ligand for asymmetric cyclization-carbonylation of meso-2-alkyl-2-propargylcyclohexane-1,3-diols. And the article contained the following:

The oxidative cyclization-carbonylation of meso-2-alkyl-2-propargylcyclohexane-1,3-diols I (R = Me, n-Pr, H2C:CHCH2) mediated by Pd(II) with chiral bisoxazoline (box ligand) afforded bicyclic β-alkoxyacrylates II. Based on a ligand screening, 2,2′-isopropylidenebis[(4S,5R)-4,5-di(2-naphthyl)-2-oxazoline] ligand has been developed. The products II with a chiral quaternary carbon were obtained in 71-100% yields with 85-95% ee. The experimental process involved the reaction of (R)-2-Amino-2-(4-(trifluoromethyl)phenyl)ethanol(cas: 306281-86-7).Category: alcohols-buliding-blocks

The Article related to benzofuran perhydro carboxymethylene asym synthesis, cyclohexanediol propargyl preparation enantioselective cyclization carbonylation oxazoline palladium catalyst, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Category: alcohols-buliding-blocks

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

On September 1, 2022, Shibuya, Hiromasa; Suk Choi, Yeong; Choi, Taejin; Yun, Sungyoung; Moon, Juhee; Matsuo, Yutaka published an article.Quality Control of 2,4-Di-tert-butylphenol The title of the article was Synthesis of n-type [60]Fullerene Derivatives with Sterically Bulky tert-Butyl Groups for Vacuum Deposition Processes. And the article contained the following:

The thermal stability of [60]fullerene derivatives I (R1 = 4-fluorophenyl, 3,5-difluorophenyl; R2 = H, Me), II (R3 = H, t-Bu; R4 = H; R3R4 = -CH=CH-CH=CH-; R5 = H, Ph, t-Bu) with various bulky substituents for thermal evaporation under vacuum by means of thermogravimetric anal. under reduced and normal pressure was investigate. The sterically bulky groups such as tert-Bu groups of [60]fullerene derivatives I, and II lowered the vacuum deposition temp were founded. Also, isothermal thermogravimetric anal. was performed to examine the long-term thermal stability of the designed compounds under heating conditions. Furthermore, the UV-Vis absorption patterns of the deposited films were investigated. Absorption in the blue wavelength range, which was attributed to intermol. HOMO-LUMO transitions among the MOs of adjacent [60]fullerenes I and II was dramatically modified. These results were associated with the prevention of aggregation among neighboring [60]fullerene by the sterically bulky groups. This concept could contribute to expanding the use of evaporable [60]fullerene derivatives I and II in organic thin-film electronics research fields. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).Quality Control of 2,4-Di-tert-butylphenol

The Article related to fullerene preparation sterically bulky tertbutyl group vacuum deposition process, fullerene, evaporable fullerene derivatives, organic electronics, organic photodiode, Heterocyclic Compounds (One Hetero Atom): Areno- and Diarenofurans and other aspects.Quality Control of 2,4-Di-tert-butylphenol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

On August 29, 2022, Fu, Qiang; Shofner, Meisha L.; Sinquefield, Scott A.; Nair, Sankar published an article.Application In Synthesis of 2,3-Dihydroxypropanoic acid The title of the article was Recovery and Enrichment of Organic Acids from Kraft Black Liquor by an Adsorption-Based Process. And the article contained the following:

Kraft black liquor (BL) is a complex multicomponent byproduct from wood pulping processes. After lignin, carbohydrate-derived carboxylic acids are the second most abundant class of organics in kraft BL and comprise a potential biomass-derived feedstock of more than 50 million tons/yr globally. These acids can be valorized in biofuels and biobased chems. production or further fractionated to produce specific high-value carboxylic acids from the mixture However, both of these routes require a viable process to sep. carboxylic acids from BL. In this work, an adsorption-based process was developed to address this challenging issue. The kraft BL stream was first pretreated to remove most of the lignin by membrane nanofiltration (NF) combined with lignin-selective adsorption. To sep. organic acids from this pretreated BL, organophilic/hydrophobic granulated activated carbon (GAC) was identified as a promising adsorbent with excellent organic/inorganic selectivity and adsorption capacity (>100 mg/g GAC). We present comprehensive adsorption measurements and anal. to characterize the adsorbent and develop a viable cyclic operation scheme for the adsorption process. The GAC adsorbents show robust separation performance over 20+ cycles. We have successfully obtained concentrated aqueous organic acid mixtures with ~95% purity from kraft BL. We propose a modified kraft process with energy-efficient BL dewatering by NF and organic acids recovery for valorization. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Application In Synthesis of 2,3-Dihydroxypropanoic acid

The Article related to enrichment organate kraft black liquor adsorption, Cellulose, Lignin, Paper, and Other Wood Products: Pulp and Liquors and other aspects.Application In Synthesis of 2,3-Dihydroxypropanoic acid

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Abranches, Dinis O.; Soares, Bruna P.; Ferreira, Ana M.; Shimizu, Seishi; Pinho, Simao P.; Coutinho, Joao A. P. published an article in 2022, the title of the article was The impact of size and shape in the performance of hydrotropes: a case-study of alkanediols.Related Products of 111-29-5 And the article contains the following content:

Inspired by the recently proposed cooperative mechanism of hydrotropy, where water mols. mediate the aggregation of hydrotrope around the solute, this work studies the impact of apolar volume and polar group position on the performance of hydrotropes. To do so, the ability of two different families of alkanediols (1,2-alkanediols and 1,n-alkanediols) to increase the aqueous solubility of syringic acid is initially investigated. Interestingly, it is observed that in the dilute region (low hydrotrope concentration), the relative position of the hydroxyl groups of the alkanediols does not impact their performance. Instead, their ability to increase the solubility of syringic acid correlates remarkably well with the size of their alkyl chains. However, this is not the case for larger hydrotrope concentrations, where 1,2-alkanediols are found to perform, in general, better than 1,n-alkanediols. These seemingly contradictory findings are reconciled using theor. and exptl. techniques, namely the cooperative model of hydrotropy and chem. environment probes (Kamlet-Taft and pyrene polarity scales). It is found that the number of hydrotropes aggregated around a solute mol. does not increase linearly with the apolar volume of the former, reaching a maximum instead. This maximum is discussed in terms of competing solute-hydrotrope and hydrotrope-hydrotrope interactions. The results suggest that hydrotrope self-aggregation is more prevalent in 1,n-alkanediols, which neg. impacts their performance as hydrotropes. The results reported in this work support the cooperative model of hydrotropy and, from an application perspective, show that hydrotropes should be designed taking into consideration not only their apolar volume but also their ability to stabilize their self-aggregation in water, which neg. impacts their performance as solubility enhancers. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Related Products of 111-29-5

The Article related to alkanediol solubility hydortropy simulation modeling, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Related Products of 111-29-5

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

On April 26, 1991, Shirahama, Haruhisa; Shinozaki, Atsuhiko published a patent.HPLC of Formula: 42900-89-0 The title of the patent was Preparation of pyrrolidineacetic acid derivatives as nervous system stimulants. And the patent contained the following:

The title compounds (I; R1-R3 = H, alkyl) and their stereoisomers are prepared Selective oxidation of 63 mg methanol derivative II (R = CH2OH) (preparation given) with pyridinium dichromate in DMF followed by esterification with CH2N2 gave 26 mg ester II (R = CO2Me), which (186 mg) was ring-opened by m-ClC6H4CO2OH and esterified by CH2N2 to give 48 mg diester III (R2 = R3 = Me) (IV). Saponification of 48 mg IV gave 26 mg diacid III (R2 = R3 = H), which (20 mg) was deprotected by hydrogenolysis over 5% Pd-C to give 9 mg (2β,3α,4α)-I (R1 = R2 = R3 = H). I caused significant depolarization in newborn rat spinal cord in vitro as measured by elec. potential, against such reference compounds as kainic acid and acromelic acid. The experimental process involved the reaction of Isochroman-3-ol(cas: 42900-89-0).HPLC of Formula: 42900-89-0

The Article related to pyrrolidineacetic acid preparation nervous stimulant, Heterocyclic Compounds (One Hetero Atom): Pyrroles and Pyrrolizines and other aspects.HPLC of Formula: 42900-89-0

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

On June 8, 2006, Kim, Tae Uk; Na, Hee Seok; Kim, Duk Hee published a patent.Safety of 2-(Methylamino)ethan-1-ol hydrochloride The title of the patent was ABS resin compositions with low coefficient of linear thermal expansion. And the patent contained the following:

The thermoplastic acrylonitrile-butadiene-styrene(ABS) resin composition with low coefficient of linear thermal expansion according to the present invention comprises (A) (a1) 10-100 parts by weight of a rubber-modified grafted copolymer; and (a2) 100 parts by weight of a rubber phase grafted copolymer prepared by 0-90 parts by weight of copolymer prepared by a vinyl cyanide compound and an aromatic vinyl compound; (B) 1-30 parts by weight of vinyl copolymer containing maleic anhydride; and (C) 1-20 parts by weight of a clay mineral organized with a compound containing functional groups; wherein said compound containing functional groups is selected one or more from the compounds having an onium ion that can proceed an ion exchange reaction with said clay mineral, and having a radical-polymerizable group. The experimental process involved the reaction of 2-(Methylamino)ethan-1-ol hydrochloride(cas: 62640-03-3).Safety of 2-(Methylamino)ethan-1-ol hydrochloride

The Article related to acrylonitrile butadiene styrene graft copolymer blend, Synthetic Elastomers and Natural Rubber: Compounding and Processing and other aspects.Safety of 2-(Methylamino)ethan-1-ol hydrochloride

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Petryk, Malgorzata; Janiak, Agnieszka; Kwit, Marcin published an article in 2017, the title of the article was Unexpected formation of a tubular architecture by optically active pure organic calixsalen.Name: 2,5-Dihydroxyisophthalaldehyde And the article contains the following content:

Herein, an unusual tubular formation of a supramol. organic framework by optically active macrocyclic calixsalen is shown via single crystal X-ray diffraction. The monomers are either bound by hydrogen bonds between OH groups in the lower rim of the macrocycle to form an hourglass structure or form a capsule with the calixsalens arranged in a head-to-head motif. The experimental process involved the reaction of 2,5-Dihydroxyisophthalaldehyde(cas: 109486-06-8).Name: 2,5-Dihydroxyisophthalaldehyde

The Article related to optically active calixsalen aggregation hydrogen bond dimerization, Physical Organic Chemistry: Other Reactions, Processes, and Spectra and other aspects.Name: 2,5-Dihydroxyisophthalaldehyde

Referemce:
Alcohol – Wikipedia,
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Al-Sabagh, A. M.; Kandile, N. G.; Nasser, N. M.; Mishrif, M. R.; El-Tabey, Amira E. published an article in 2014, the title of the article was Demulsification Efficiency of Some New Demulsifiers Based on 1,3,5-Triethanolhexahydro-1,3,5-triazine.Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol And the article contains the following content:

This study mainly concentrates on the synthesis of three novel demulsifiers and the investigation of their demulsification efficiency. The demulsifiers were derived from 1,3,5-triethanolhexahydro-1,3,5-triazine, which was prepared by the reaction of monoethanol amine with formaldehyde. The 1,3,5-triethanolhexahydro-1,3,5-triazine was ethoxylated by introducing 20 units of ethylene oxide and then esterified at different molar ratios with oleic acid (1, 2, and 3) to give three demulsifiers, namely, E20TO, E20TO2, and E20TO3. The chem. structures of the prepared demulsifiers were confirmed by 1H NMR and FTIR spectrum. The demulsification efficiency of these demulsifiers was tested on the natural water-in-oil (w/o) emulsions (50% water content). From the obtained results, it has been found that the investigated demulsifiers have a great potential to break the w/o emulsions. The trioleat ester (E20TO3) exhibited the maximum demulsification efficiency (96%) after 120 min at 55°C. The experimental process involved the reaction of 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol(cas: 4719-04-4).Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

The Article related to triethanolhexahydrotriazine demulsifier synthesis petroleum demulsification, Fossil Fuels, Derivatives, and Related Products: Crude-Oil Refining and other aspects.Recommanded Product: 2,2′,2”-(1,3,5-Triazinane-1,3,5-triyl)triethanol

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts