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Crystalline-amorphous interfaces of NiO-CrO_(x)electrocatalysts for boosting the urea oxidation reaction

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Nano Research 2023年第3期16卷 3665-3671页

作者： Xuejie Cao Tongzhou Wang hongye qin Guangliang Lin Lihua Zhao Lifang Jiao Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Tianjin Renai College Tianjin 301636China

The overall energy efficiency of electrochemical systems is severely hindered by the traditional anodic oxygen evolution reaction(OER).Utilizing urea oxidation reaction(UOR)with lower thermodynamic potential to replace OER provides a promising strategy to enhance the energy *** and heterojunctions electrocatalysts have been aroused extensive studies owing to their unique physicochemical properties and outperformed ***,we report a simple method to construct a novel crystalline-amorphous NiO-CrO_(x)heterojunction grown on Ni foam for UOR *** NiO-CrO_(x)electrocatalyst displays excellent UOR performance with an ultralow working potential of 1.32 V at 10 mA·cm^(−2)and ultra-long stability about 5 days even at 100 mA·cm^(−2).In-situ Raman analysis and temperature-programmed desorption(TPD)measurement verify that the presence of the amorphous CrO_(x)phase can boost the reconstruction from NiO to active NiOOH species and enhance adsorption ability of urea ***,the unique crystalline-amorphous interfaces are also benefit to improving the UOR performance.

关键词： NiO-CrO_(x) crystalline-amorphous interfaces electrochemical reconstruction urea oxidation reaction

固定化简单节杆菌细胞用于醋酸可的松转化的研究——固定化载体对转化作用的影响

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生物工程学报 1986年第3期 60-65页

作者：余昆卢鸿业叶勤俞俊棠华东化工学院

海藻酸钙包埋简单节杆菌细胞回收率达89%。将凝胶用磷酸缓冲液溶解后测定活力证明固定化过程对细胞活力没有显著影响,但转化高浓度底物时,有效活力很低。将菌种接八聚丙烯酰胺凝胶后进行培养、活化,制得了高活力的固定化细胞,可用于转... 详细信息

海藻酸钙包埋简单节杆菌细胞回收率达89%。将凝胶用磷酸缓冲液溶解后测定活力证明固定化过程对细胞活力没有显著影响,但转化高浓度底物时,有效活力很低。将菌种接八聚丙烯酰胺凝胶后进行培养、活化,制得了高活力的固定化细胞,可用于转化高浓度的底物。测得产物醋酸泼尼松在海藻酸钙和聚丙烯酰胺凝胶中与溶液间的分配系数分别为1.29和0.69。作者认为产物的亲凝胶性可能是阻碍海藻酸钙凝胶包埋细胞进行转化反应的重要因素。

关键词：甾体转化醋酸可的松固定化细胞简单节杆菌

A rate-based method for dynamic analysis and optimal design of reactive extraction: n-Hexyl acetate esterification as an example

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Chinese Journal of Chemical Engineering 2020年第1期28卷 76-83页

作者： Xutao Hu Hao qin Biao Hu hongye Cheng Lifang Chen Zhiwen Qi Max Planck Partner Group at the State Key Laboratory of Chemical Engineering School of Chemical Engineering East China University of Science and Technology

The dynamic analysis and optimal design of reactive extraction are challenging due to high nonlinearity of model equations and tough decision of judging criteria. In this work, a dynamic rate-based method is developed on g PROMS platform to get easy access to the solutions of reactive extraction with phase splitting. Based on rigorous criteria, dynamic analysis from initial state to final equilibrium(e.g., evolution of phase composition, mass transfer rate and reaction rate) and optimal design of operating conditions(e.g., extractant dosage and feed molar ratio) are achieved. To illustrate the method, the esterification of n-hexyl acetate is taken as an example. The approach proves to be reliable in the analysis and optimization of the exemplified system, which provides instructive reference for further process design and simulation of reactive extraction.

关键词： Reactive extraction Dynamic rate-based method Optimal design Process simulation n-Hexyl acetate esterification

Reactive extraction for intensifying 2-ethylhexyl acrylate synthesis using deep eutectic solvent [Im:2PTSA]

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Green Energy & Environment 2021年第3期6卷 405-412页

作者： Ruizhuan Wang Hao qin Jingwen Wang hongye Cheng Lifang Chen Zhiwen Qi State Key Laboratory of Chemical Engineering and School of Chemical Engineering East China University of Science and Technology130 Meilong RoadShanghai200237China

2-Ethylhexyl acrylate(2-EHA)is one of the most widely used acrylates in the polymer industry,which is synthesized via Fisher esterification that is limited by chemical *** intensify the esterification process,in this work,reactive extraction concept is proposed,with halogen-free deep eutectic solvent(DES[Im:2PTSA])as dual solvent-catalyst that consists of imidazole(Im)and p-toluenesulfonamide(PTSA).The bifunctional effects of the DES[Im:2PTSA]are evaluated by thermodynamic analysis and experimental *** phase splitting is verified byσ-potential analysis predicted by COSMO-RS theory,combined with experiments,and the optimal acid-to-alcohol molar ratio is set to *** esterification kinetics is then experimentally determined and fitted using the molar-based and activity-based pseudo-homogeneous(PH)models,*** activity-based PH model,that considers the bifunctional roles of the DES,proves to be more accurate with small RMSD of *** stability of DES after recycling is validated to further confirm the industrial prospects of DES[Im:2PTSA]in 2-EHA production.

关键词： 2-Ethylhexyl acrylate Deep eutectic solvent Reactive extraction Esterification kinetics COSMO-RS

Reactive extraction for synthesizing long chain ester butyl hexanoate intensified by deep eutectic solvent

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Chinese Journal of Chemical Engineering 2021年第8期34卷 120-127页

作者： Yishan Zhou Hao qin hongye Cheng Lifang Chen Bingjian Zhang Zhiwen Qi State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory of Low-carbon Chemistry&Energy Conservation of Guangdong Province Sun Yat-sen UniversityGuangzhou 510275China

Butyl hexanoate(BuHE)is an important long-chain ester that is widely used in the food,beverage and cosmetic *** this work,reactive extraction concept was proposed to intensify the BuHE formation in a biphasic system,in which deep eutectic solvent(DES)comprising 2-methylimidazole(2-MIm)and p-toluenesulfonic acid(PTSA)was used as dual ***,the effect of 2-MIm to PTSA molar ratio on esterification was investigated to determine the optimum DES of[2-MIm:2PTSA],which was characterized by FT-IR and ***,the liquid–liquid equilibrium(LLE)and esterification experiments were carried out to confirm the extraction and catalytic effect of[2-MIm:2PTSA],***,the pseudo-homogeneous kinetic model was employed to describe the esterification ***,the intensification mechanism of reactive extraction for BuHE formation was proposed according to the experiments and interaction effect analysis.

关键词： Esterification Reactive extraction Deep eutectic solvent Catalysis effect Solvent effect Pseudo-homogeneous kinetic model

Overview of acidic deep eutectic solvents on synthesis,properties and applications

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Green Energy & Environment 2020年第1期5卷 8-21页

作者： Hao qin Xutao Hu Jingwen Wang hongye Cheng Lifang Chen Zhiwen Qi Max Planck Partner Group at the State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and Technology

This review divides the acidic deep eutectic solvents(ADES) into Br?nsted and Lewis DES according to their diversity of acidic *** hydrogen bond donors and halide salts for formulating an ADES are classified, the synthesis methods are described, and the physicochemical properties including freezing point, acidity, density, viscosity and conductivity are presented. Furthermore, the applications of Br?nsted acidic deep eutectic solvents(BADES) and Lewis acidic deep eutectic solvents(LADES) are overviewed, respectively, covering the fields in dissolution, extraction, organic reaction and metal electrodeposition. It is expected that the ADES has great potential to replace the pollutional mineral acid, expensive and unstable solid acid, and costly ionic liquid in many acid-employed chemical processes, thus meeting the demands of green chemistry.

关键词： Acidic deep eutectic solvent Brφnsted acidity Lewis acidity Green chemistry

Efficient Knoevenagel condensation catalyzed by imidazole-based halogenfree deep eutectic solvent at room temperature

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Green Energy & Environment 2020年第2期5卷 124-129页

作者： Hao qin Yishan Zhou Qian Zeng hongye Cheng Lifang Chen Bingjian Zhang Zhiwen Qi Max Planck Partner Group at the State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and Technology130 Meilong RoadShanghai200237China School of Chemical Engineering and Technology Sun Yat-Sen University135 Xingang West RoadGuangzhou510275China

For the first time,we employed the halogen-free deep eutectic solvent(DES)into the Knoevenagel condensation between aromatic aldehydes and active methylene compounds at room *** DESs[3Im:PTSA]and[4Im:PTSA]were prepared by imidazole(Im)and p-tol-uenesulfonic acid(PTSA),which were experimentally screened from a series of organic acids with imidazole.a,b-Unsaturated carbonyl compounds were obtained in good to excellent yields under solvent-free conditions with fast reaction *** two DESs can be reused for multiple times with no loss of catalytic activity.

关键词： Halogen-free DES Knoevenagel condensation Room temperature Recyclable catalyst Solvent-free condition

COSMO-RS prediction and experimental verification of 1,5-pentanediamine extraction from aqueous solution by ionic liquids

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Green Energy & Environment 2021年第3期6卷 422-431页

作者： Chenhao Jiang hongye Cheng Zexian qin Ruizhuan Wang Lifang Chen Chen Yang Zhiwen Qi Xiucai Liu State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and Technology130 Meilong RoadShanghai200237China Institute of Biobased Materials East China University of Science and Technology130 Meilong RoadShanghai200237China Cathay Biotech Inc. 1690 Cailun RoadShanghai201203China

1,5-Pentanediamine(PDA)produced by biological fermentation becomes popular,but the separation of PDA from the broth is a typical difficult *** this work,the performance of 200 ionic liquids(ILs),formed by combining 25 cations and 8 anions,in the extraction of PDA from aqueous solution were evaluated using COSMO-RS *** extraction mechanism was investigated with the help ofσ-profile and interaction energy *** the cation and anion have impacts on the extraction efficiency,where cation mainly influences the interaction of IL with PDA and anion affects the hydrophobicity of *** IL composed of long alkyl-chain in cation and the anion of[PF6]-or[TF2 N]-,which has theσ-profile more likely distributed in the nonpolar region but less distributed in the polar region,is favorable for *** experimental liquid-liquid equilibrium demonstrated the effects of cation and anion on extraction performance,which validated the reliability of COSMO-RS model in IL screening for PDA *** IL[IM-1,8][PF6]could serve as a promising extractant for the downstream separation process of the biological production of PDA.

关键词： 1,5-Pentanediamine Ionic liquids Aqueous solution Extraction COSMO-RS model

Proteome-wide epitope mapping identifies a resource of antibodies for SARS-CoV-2 detection and neutralization

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Signal Transduction and Targeted Therapy 2021年第5期6卷 1436-1438页

作者： Te Liang Mengli Cheng Fei Teng hongye Wang Yongqiang Deng Jiahui Zhang Chengfeng qin Shubin Guo Hui Zhao Xiaobo Yu State Key Laboratory of Proteomics Beijing Proteome Research CenterNational Center for Protein Sciences-Beijing(PHOENIX Center)Beijing Institute of LifeomicsBeijing 102206China Department of Virology State Key Laboratory of Pathogen and BiosecurityBeijing Institute of Microbiology and EpidemiologyAcademy of Military Medical SciencesBeijing 100071China Emergency Medicine Clinical Research Center Beijing Chao-Yang HospitalCapital Medical University&Beijing Key Laboratory of Cardiopulmonary Cerebral ResuscitationBeijing 100020China

Dear Editor,Since December 2019,the coronavirus disease 2019(COVID-19)caused by the severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)has become a worldwide pandemic.1 Significant efforts have been made to generate antibodies to help study COVID-19 pathogenesis,perform diagnostic testing,and develop treatment to neutralize SARS-CoV-2 ***,the specific sequence of amino acids recognized and bound by an antibody,the"epitope"is unknown for most *** this study,we developed a high-throughput epitope mapping platform using a peptide-based SARS-CoV-2 proteome microarray.2 to detect the binding epitopes of 57 commercial antibodies to ORFlab,nudeocapsid(N);spike(S),envelop(E),membrane(M),ORF3a,ORF6,ORF7a,and ORF8 proteins(Supplementary Table S1).

关键词： mapping antibodies epitope