Month: November 2022

On January 31, 2022, Vo, Truong-Giang; Ho, Po-Yun; Chiang, Chia-Ying published an article.Name: 2,3-Dihydroxypropanoic acid The title of the article was Operando mechanistic studies of selective oxidation of glycerol to dihydroxyacetone over amorphous cobalt oxide. And the article contained the following:

In this work, cobalt oxide (CoOx) has been demonstrated as an efficient and selective electrocatalyst for producing value-added dihydroxyacetone (DHA) from industrial byproduct glycerol. Under optimized conditions, DHA with high selectivity up to 45% and a high production rate of 9.6μmol h-1 cm-2 is obtained at high c.d. over 3 mA cm-2 without the occurrence of the oxygen evolution reaction. Operando Raman spectroscopy features the potential-induced structural transformation between CoOx and oxyhydroxides from which a correlation among applied potential, surface chem. of electrocatalyst, and product distribution are built. These results point toward the viability of using inexpensive materials for electrochem. biomass upgrading as well as providing opportunities for studying structural evolution and activity origin of catalysts under realistic working conditions that can be widely extended to most electrocatalytic biomass valorization processes. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Name: 2,3-Dihydroxypropanoic acid

The Article related to cobalt oxide catalyst glycerol selective oxidation dihydroxyacetone, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Name: 2,3-Dihydroxypropanoic acid

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On September 15, 2022, Sadier, Achraf; Paul, Sebastien; Marceau, Eric; Wojcieszak, Robert published an article.Application In Synthesis of SweetPearlR P300 DC Maltitol The title of the article was Ni-Fe alloying enhances the efficiency of the maltose hydrogenation process: The role of surface species and kinetic study. And the article contained the following:

Unlike the conversion of monosaccharides to the corresponding polyols, the production of maltitol by hydrogenation of maltose has been seldom investigated in the literature, despite its industrial importance. Monometallic Ni catalysts are known for their lack of stability, and the objective of the present paper is to determine through a kinetic study, to what extent a Ni-Fe/SiO2 bimetallic catalyst would outperform a Ni/SiO2 catalyst in the aqueous phase hydrogenation of maltose. The effect of reaction parameters (T = 80-150°C, PH2 = 20-40 bar, maltose mass fraction in water = 4.4-17.5 wt%) on activity, selectivity, and stability was examined In all cases, maltitol was the major product, with a carbon balance higher than 98%, but maltose hydrolysis to glucose occurred in the upper range of temperature In order to preserve both the catalyst selectivity and stability, a temperature of 80°C was selected for the kinetic study. The adsorption constant of maltose and the apparent hydrogenation rate constant for the Ni-Fe catalyst were both larger by a factor 2-3 compared with the Ni catalyst, indicating a stronger interaction of maltose with the Ni-Fe surface. Another major difference was a reaction order of 0.5 with respect to the hydrogen pressure on Ni-Fe/SiO2 compared with a near zero-order on Ni/SiO2. The activity of the Ni-Fe catalyst remained constant for three runs of reaction without major structural changes, while the Ni catalyst deactivated by transforming to a phyllosilicate phase. The experimental process involved the reaction of SweetPearlR P300 DC Maltitol(cas: 585-88-6).Application In Synthesis of SweetPearlR P300 DC Maltitol

The Article related to maltose hydrogenation process silica nickel iron bimetallic catalyst, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Application In Synthesis of SweetPearlR P300 DC Maltitol

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Alcohol – Wikipedia,
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On April 30, 2020, Li, Xuemei; Tian, Junying; Liu, Hailong; Tang, Congkui; Xia, Chungu; Chen, Jing; Huang, Zhiwei published an article.Computed Properties of 111-29-5 The title of the article was Effective synthesis of 5-amino-1-pentanol by reductive amination of biomass-derived 2-hydroxytetrahydropyran over supported Ni catalysts. And the article contained the following:

A highly efficient and green process was developed for the synthesis of useful 5-amino-1-pentanol (5-AP) from biomass-derived dihydropyran by coupling the in situ generation of 5-hydroxypentanal (5-HP, via the ring-opening tautomerization of 2-hydroxytetrahydropyran (2-HTHP)) and its reductive amination over supported Ni catalysts. The catalytic performances of the supported Ni catalysts on different oxides including SiO2, TiO2, ZrO2, γ-Al2O3, and MgO as well as several com. hydrogenation catalysts were investigated. The Ni/ZrO2 catalyst presented the highest 5-AP yield. The characterization results of the oxide-supported Ni catalysts showed that the Ni/ZrO2 catalyst possessed high reducibility and a high surface acid d., which lead to the enhanced activity and selectivity of the catalyst. The effect of reaction parameters on the catalytic performance of the Ni/ZrO2 catalyst was studied, and a high 5-AP yield of 90.8% was achieved in the reductive amination of 2-HTHP aqueous solution under mild conditions of 80°C and 2 MPa H2. The stability of the Ni/ZrO2 catalyst was studied using a continuous flow reactor, and only a slight decrease in the 5-AP yield was observed after a 90-h time-onstream. Addnl., the reaction pathways for the reductive amination of 2-HTHP to synthesize 5-AP were proposed. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Computed Properties of 111-29-5

The Article related to hydroxytetrahydropyran reductive amination supported nickel catalyst, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Computed Properties of 111-29-5

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On January 9, 2018, Sakti, Aditya Wibawa; Nishimura, Yoshifumi; Nakai, Hiromi published an article.HPLC of Formula: 2160-93-2 The title of the article was Rigorous pKa Estimation of Amine Species Using Density-Functional Tight-Binding-Based Metadynamics Simulations. And the article contained the following:

Predicting pKa values for different types of amine species with high accuracy and efficiency is of critical importance for the design of high performance and economical solvents in carbon capture and storage with aqueous amine solutions In this study, we demonstrate that d.-functional tight-binding (DFTB) metadynamics simulations are a promising approach to calculate the free energy difference between the protonated and neutral states of amines in aqueous solution with inexpensive computational cost. The calculated pKa values were in satisfactory agreement with the exptl. values, the mean absolute deviation being only 0.08 pKa units for 34 amines commonly used in CO2 scrubbing. Such superior reproducibility and correlation compared to estimations by static quantum mech. calculations highlight the significant effect of dynamical proton transfer processes in explicit solvent mols. for the improvement of the estimation accuracy. Note that the accuracy of the estimated pKa might be dependent on the adopted systems, due to the limitation of the DFTB parameter. The experimental process involved the reaction of 2,2′-(tert-Butylazanediyl)diethanol(cas: 2160-93-2).HPLC of Formula: 2160-93-2

The Article related to pka amine aqueous solution protonation dftb3 metadynamics simulation, Phase Equilibriums, Chemical Equilibriums, and Solutions: Acid-Base Equilibriums, Complex Formation and other aspects.HPLC of Formula: 2160-93-2

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Alcohol – Wikipedia,
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On August 31, 2020, Li, Zhi-Xin; Wei, Xian-Yong; Yang, Zheng; Li, Jun; Yan, Wei-Wei; Bie, Lei-Lei; Zhang, Yang-Yang; Li, Sheng; Zong, Zhi-Min published an article.Reference of Pentane-1,5-diol The title of the article was Selective hydrogenation of bio-based furfural over Co-based catalysts derived from zeolitic imidazolate frame materials. And the article contained the following:

Co-Zn/NC was prepared by a sacrificial template self-reduction method with zeolitic imidazolate frame-8 (ZIF-8) impregnating the Co2+ as the precursor. At 125°C for 2.5 h, furfural was completely converted to furan-2-ylmethanol (FM) over Co17Zn/NC600, while FM selectivity over Co/NC600 is only 70.6%. According to multiple characterizations, Co17Zn/NC600 (Co loading 17%, calcined at 600°C) consists of flower-like spherical Co3ZnC nanoparticles (NPsCo3ZnC) uniformly distributed on its surface. The NPsCo3ZnC are the main active ingredients for highly selective furfural hydrogenation to FM, which is confirmed by furfural hydrogenation over Co-Zn/NC prepared with different Co loadings and different calcination temperatures The excellent activity and stability of Co17Zn/NC600 were confirmed by recycling experiment and furfural conversion is still above 90% after repeated use of Co17Zn/NC600 for 8 cycles. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Reference of Pentane-1,5-diol

The Article related to hydrogenation bio furfural cobalt catalyst zeolitic imidazolate frame, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Reference of Pentane-1,5-diol

Referemce:
Alcohol – Wikipedia,
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On September 6, 2022, Zhang, Dejin; Sun, Shu; Wu, Qi; Xie, Yong; Liu, Chengcheng; Wang, Cong; Zhang, Keying; Shi, Hongwei; Zhuo, Xin; Wang, Hongyan published an article.HPLC of Formula: 96-76-4 The title of the article was Efficient and Easily Recyclable Catalyst for the Alkylation Reaction of Phenol and tert-Butyl Alcohol. And the article contained the following:

Tert-Butylphenol is widely used as an intermediate in organic synthesis, and the catalyst for the alkylation reaction of phenol and tert-Bu alc. is the key to synthesizing tert-butylphenol. In our work, a catalyst, 1H-imidazole-1-acetic acid tosilate ([HIMA]OTs), was synthesized and characterized, and an efficient and easily recyclable catalytic system of an ionic liquid was established. In addition, the kinetic and thermodn. parameters were calculated; the pos. value of ΔH* indicated the endothermic nature of the alkylation reaction, and the pos. value of ΔS* and neg. value of ΔG* implied that the process of alkylation of phenol and tert-Bu alc. was spontaneous in the current reaction system. The recovery experiments of [HIMA]OTs were performed, and an excellent recycling performance was obtained. This method provides a potential way for the industrial synthesis of tert-butylphenol. The experimental process involved the reaction of 2,4-Di-tert-butylphenol(cas: 96-76-4).HPLC of Formula: 96-76-4

The Article related to efficient recyclable catalyst alkylation reaction phenol tert butyl alc, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.HPLC of Formula: 96-76-4

Referemce:
Alcohol – Wikipedia,
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On October 31, 2020, Yeh, Jyun-Yi; Matsagar, Babasaheb M.; S. Chen, Season; Sung, Hsiang-Ling; Tsang, Daniel C. W.; Li, Yi-Pei; Wu, Kevin C.-W. published an article.Reference of Pentane-1,5-diol The title of the article was Synergistic effects of Pt-embedded, MIL-53-derived catalysts (Pt@Al2O3) and NaBH4 for water-mediated hydrogenolysis of biomass-derived furfural to 1,5-pentanediol at near-ambient temperature. And the article contained the following:

We demonstrate an effective and selective conversion of biomass-derived furfural (FAL) to 1,5-pentanediol (1,5-PD) with high yields through a water-mediated hydrogenolysis process under mild reaction conditions (45°C, aqueous media). A novel alumina-supported platinum catalyst (Pt@Al2O3) with high-loading and uniform distribution of Pt nanoparticles is prepared through in situ synthesis of Pt-embedded metal-organic frameworks (i.e., MIL-53(Al)-NH2). As a typical example, a high yield of 75.2% 1,5-PD can be achieved from FAL conversion. A possible reaction mechanism is proposed based on the exptl. and computational findings, including XPS anal., kinetic studies, acidity measurements, and d. functional theory (DFT) calculations The high effectiveness of the proposed system is attributed to (1) the strong metal support interaction (SMSI) between Pt and penta-coordination aluminum, and (2) the synergistic effects of Bronsted acidic alumina support and the presence of sodium metaborate (NaBO2). Sodium borohydride (NaBH4) acts as both a hydrogen donor and a precursor for NaBO2, which results in an exclusive FAL to 1,5-PD (i.e., no 1,2-pentanediol) by regulating the water-mediated hydrogenolysis pathway as revealed by experiments and DFT calculations The reaction strategy proposed in this study has also manifested remarkable versatility for a wide range of furan derivatives The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Reference of Pentane-1,5-diol

The Article related to synergistic platinum embedded catalyst al2o3 nabh4 hydrogenolysis biomass, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Reference of Pentane-1,5-diol

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Alcohol – Wikipedia,
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On September 30, 2021, Li, Xinsheng; Pang, Jifeng; Luo, Wenhao; Zhao, Yu; Pan, Xiaoli; Zheng, Mingyuan published an article.Name: Pentane-1,5-diol The title of the article was Catalytic Conversion of Tetrahydrofurfuryl Alcohol over Stable Pt/MoS2 Catalysts. And the article contained the following:

MoS2 supported noble metal catalysts were used for the catalytic conversion of terahydrofurfuryl alc. (THFA) to 1,5-pentanediol (1,5-PDO) and its derivate tetrahydropyrane (THP). Over the optimal 4%Pt/MoS2-FR catalyst, 75.8% overall selectivity (35.4% to 1,5-PDO and 40.4% to THP) and 63.7% conversion of 5 wt% THFA solution were obtained after 8 h reaction at 250°C. The catalyst showed stable catalytic performance in five-cycle reactions, demonstrating the robustness of Pt/MoS2 under the harsh hydrothermal and hydrogenation conditions. A variety of characterizations, including CO-DRIFTS, HRTEM, H2-TPR, Raman spectroscopy and XPS revealed that typical behavior of strong metal-support interaction (SMSI) existed between Pt and MoS2, largely caused by the coverage of MoS2 over Pt and rarely reported previously. The Pt/MoS2 had intact structure under the harsh conditions thanks to the SMSI and chem. stability of MoS2. The acidity of Pt/MoS2 was negligible, and the active sites for the reaction were attributed to Pt and the Mo sites interacting closely on the catalysts. The reaction pathway was proposed according to the product distributions and the results of conditional experiments The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).Name: Pentane-1,5-diol

The Article related to platinum molybdenum disulfide catalyst tetrahydrofurfuryl alc hydrogenation, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Name: Pentane-1,5-diol

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Alcohol – Wikipedia,
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On August 20, 2021, Cao, Peng; Lin, Lu; Qi, Haifeng; Chen, Rui; Wu, Zhijie; Li, Ning; Zhang, Tao; Luo, Wenhao published an article.HPLC of Formula: 111-29-5 The title of the article was Zeolite-Encapsulated Cu Nanoparticles for the Selective Hydrogenation of Furfural to Furfuryl Alcohol. And the article contained the following:

Catalytic hydrogenation of furfural (FFL) to furfuryl alc. (FAL) is one of the pivotal reactions for biomass valorization. Herein, well-defined Cu nanoparticles of ~1.8 nm encapsulated within titanium silicalite-1 (TS-1) have been successfully prepared by an in situ encapsulation approach, which possesses significant advantages in metal dispersion and uniformity compared to the traditional wet impregnation method. After a Na ion-exchange process for modulation of the zeolite microenvironment, the obtained Na-Cu@TS-1 catalyst affords an enhanced activity and selectivity in the selective hydrogenation of FFL into FAL, with a FFL conversion of 93.0% and a FAL selectivity of 98.1% at 110°C, 10 bar H2, after a reaction time of 2 h. A turnover frequency value of 55.2 h-1 has been achieved, reflecting some of the highest activity for Cu-based heterogeneous catalysts under similar conditions. Comprehensive characterization studies reveal that the confined environment of the zeolite could not only provide the spatial restriction for metal particles but also induce an electronic interaction between encapsulated Cu nanoparticles and Ti species in Na-Cu@TS-1, which both lead to effective suppression of the metal aggregation and leaching during catalysis. Na species, added by the ion exchange, not only mediate the acid/basic property of the zeolite for suppressing the side reactions but also modulate the encapsulated Cu species into an electronic-rich state, facilitating the FFL hydrogenation. Deactivation of Na-Cu@TS-1 is primarily caused by Na leaching into the liquid phase, but activity can be almost restored after a Na readdn. process. The experimental process involved the reaction of Pentane-1,5-diol(cas: 111-29-5).HPLC of Formula: 111-29-5

The Article related to zeolite encapsulated copper nanoparticle hydrogenation furfural furfuryl alc, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.HPLC of Formula: 111-29-5

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Alcohol – Wikipedia,
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On September 30, 2022, Radi, Abd-Elgawad; Ashour, Waganat Fakherel-Dien; Elshafey, Reda published an article.Electric Literature of 473-81-4 The title of the article was Glycerol Electrocatalytic Oxidation on Nickel Hydroxide Nanoparticles/Poly-Eriochrome Black T Modified Electrode. And the article contained the following:

A novel nickel hydroxide nanoparticles/poly-Eriochrome Black T modified glassy carbon electrode (Ni(OH)2NPs/PEBT-modified GCE) was easily fabricated and characterized using SEM and electroanal. techniques. The electrogenerated PEBT-modified GCE was used to incorporate the Ni(II) ions before the electrochem. polarization in an alk. medium. Such a platform exhibited excellent catalytic behavior toward glycerol (GLY) in an alk. medium. The oxidation of GLY on the Ni(OH)2NPs/PEBT-modified GCE proceeds in a diffusion-controlled process. The exptl. conditions for the Ni(OH)2NPs/PEBT-modified GCE were optimized. The sensor detected GLY in a wide linear range based on cyclic voltammetry and chronoamperometry from 0.1 to 10 mM and 5 to 500μM, resp. These methods achieved a limit of detection of 0.06 mM and 1.96μM with the sensitivity values of 4.99μA M-1 and 14.94μA M-1, resp. The experimental process involved the reaction of 2,3-Dihydroxypropanoic acid(cas: 473-81-4).Electric Literature of 473-81-4

The Article related to nickel hydroxide nanoparticle polyeriochrome black t glassy carbon electrode, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.Electric Literature of 473-81-4

Referemce:
Alcohol – Wikipedia,
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