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Continuous deacylation of amides in a high-temperature and high-pressure microreactor

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 12,   Pages 1818-1825 doi: 10.1007/s11705-022-2182-y

Abstract: The deacylation of amides, which is widely employed in the pharmaceutical industry, is not a fast reaction under normal conditions. To intensify this reaction, a high-temperature and high-pressure continuous microreaction technology was developed, whose space-time yield was 49.4 times that of traditional batch reactions. Using the deacylation of acetanilide as a model reaction, the effects of the temperature, pressure, reaction time, molar ratio of reactants, and water composition on acetanilide conversion were carefully studied. Based on the rapid heating and cooling capabilities, the kinetics of acetanilide deacylation at high temperatures were investigated to determine the orders of reactants and activation energy. This microreaction technology was further applied to a variety of other amides to understand the influence of substituents and steric hindrance on the deacylation reaction.

Keywords： amide deacylation     microreactor     flow chemistry     reaction intensification    

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Frontiers of Catalysis Chemistry and Technology

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 1-2 doi: 10.1007/s11705-018-1704-0

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Role of water chemistry on estrone removal by nanofiltration with the presence of hydrophobic acids

Xue JIN,Jiangyong HU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 164-170 doi: 10.1007/s11783-014-0747-9

Abstract: In this study, the effects of solution chemistry (solution pH and ionic strength) on the estrone rejection

Keywords： indirect potable water reuse     steroid hormone     nanofiltration(NF)     rejection     water chemistry     hydrophobic    

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Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1267-4

Abstract: . • Elucidate Redox and equilibrium chemistry of Cr(VI). • Sn(II)-based and TiO2-based reductive treatmentsthe sources and occurrence of Cr(VI) in drinking water in the United States, analyzed the equilibrium chemistry

Keywords： Chromium     Chemistry     Treatment     Future outlook    

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Continuous-Flow Synthesis of the Nucleobase Unit of Remdesivir Article

Yongxing Guo, Minjie Liu, Meifen Jiang, Yuan Tao, Dang Cheng, Fen-Er Chen

Engineering 2023, Volume 21, Issue 2,   Pages 92-100 doi: 10.1016/j.eng.2021.07.029

Abstract: remdesivir, 7-bromopyrrolo[2,1-f][1,2,4]triazin-4-amine, was synthesized through five-step continuous flowBy adapting batch synthetic chemistry, 7-bromopyrrolo[2,1-f][1,2,4]triazin-4-amine was successfully producedthrough sequential flow operations from the widely available and inexpensive starting material pyrroleUnder optimal flow conditions, 7-bromopyrrolo[2,1-f][1,2,4]triazin-4-amine was obtained in 14.1% isolatedIn flow, the highly exothermic Vilsmeier–Haack and N-amination reactions involving hazardous and

Keywords： Flow chemistry     Continuous multistep synthesis     Microreaction technology     Reaction–separation integration    

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Where physics meets chemistry: Thin film deposition from reactive plasmas

Andrew Michelmore, Jason D. Whittle, James W. Bradley, Robert D. Short

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 4,   Pages 441-458 doi: 10.1007/s11705-016-1598-7

Abstract: In this review, we aim to show that plasma physics drives the chemistry of the plasma phase, and surface-plasma

Keywords： thin films     plasma physics     plasma chemistry     functionalization     polymer    

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Improvement of Secondary Water Chemistry in Qinshan Nuclear Power Plant

Tao Jun,Kong Deping

Strategic Study of CAE 2008, Volume 10, Issue 1,   Pages 91-96

Abstract: With the improvement of water chemistry management of secondary system in Qinshan nuclear power plantWith the implementation of these measurements, the WANO chemistry performance index improved from 1.66The improvement of secondary water chemistry ensures the integrity of SG tubes in QNPP.

Keywords： secondary system     water chemistry     WANO chemistry performance index    

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Bioorthogonal chemistry based on-demand drug delivery system in cancer therapy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 483-489 doi: 10.1007/s11705-022-2227-2

Abstract: Based on these applications, the complexities, potential pitfalls, and opportunities of bioorthogonal chemistry

Keywords： bioorthogonal reaction     cancer therapy     metabolic glycoengineering     bioorthogonal catalytic patch    

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Engineering Research Progress of Electrochemical Microreaction Technology—A Novel Method for Electrosynthesis of Organic Chemicals Review

Siyuan Zheng, Junyu Yan, Kai Wang

Engineering 2021, Volume 7, Issue 1,   Pages 22-32 doi: 10.1016/j.eng.2020.06.025

Abstract: Flow patterns and mass transfer behaviors in recently reported electrochemical microreactors are analyzed

Keywords： Electrochemistry     Electrosynthesis     Microreactor     Flow chemistry    

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The First Attempt for Accounts of Environmental Chemistry and Technology Research

Jinyong Liu, Yin Wang, Haoran Wei

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1270-9

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Regulating surface chemistry of separator with LiF for advanced Li-S batteries

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 601-606 doi: 10.1007/s11708-021-0759-7

Abstract: To address the above issues, lithium fluoride (LiF) was employed to regulate the surface chemistry of

Keywords： Li-S batteries     LiF     functional separator    

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Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles of

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1586-8

Abstract:

● nZVI, S-nZVI, and nFeS were systematically compared for Cd(II) removal.

Keywords： Nano zero valent iron     Sulfided zero valent iron     FeS     Cd(II) immobilization     Fe dissolution    

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compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and quantum chemistry

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1229-1242 doi: 10.1007/s11705-020-2030-x

Abstract: Octanes in alkylation products obtained from industrial alkylation were studied by batch experiments. More than eight octane isomers were identified and quantified by gas chromatography-mass spectrometry. Based on a classic carbenium ion mechanism, the carbocation transition states in concentrated sulfuric acid catalyzed alkylation were investigated using quantum-chemical simulations and predicted the concentration and octane isomerization products including trimethylpentane and dimethylhexane as well as the formation of heavier compounds that resulted from the oligomerization of octane and butene. The agreement between model calculations and experimental data was quite satisfactory. Calculation results indicated that composition and content of trimethylpentanes in the alkylation products were 2,2,4-trimethylpentane>2,3,3-trimethylpentane>2,3,4-trimethylpentane>2,2,3-trimethylpentane whether the 2-butene or -butene acts as olefin. Heavier compounds in the alkylate were primarily formed by the oligomerization of dimethylhexane with 1-butene. Hopefully, the carbocation transition state models developed in this work will be useful for understanding the product distributions of octane in alkylation products.

Keywords： sulfuric acid catalyzed alkylation     carbocation reaction     transition state     octane compositions    

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Advance in FCC Process Reaction Chemistry

Xu Youhao and Wang Xieqing

Strategic Study of CAE 2007, Volume 9, Issue 8,   Pages 6-14

Abstract: of FCC process,  the multi-dimensional reaction structure was proposed for FCC process reaction chemistrynbsp;The multi-dimension reaction structure mode was established on the basis of hydrocarbon reaction chemistry

Keywords： catalytic cracking     reaction chemistry     catalyst     two different reaction zones     multi--dimensional reaction    

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The Progress on Chemistry and Technology of Synthetic Rubber in 20th Century

Wu Guanying

Strategic Study of CAE 1999, Volume 1, Issue 3,   Pages 79-85

Abstract: to the progress of synthetic rubber industry in this century with special emphasis on the synthetic chemistry

Keywords： synthetic rubber     synthetic chemistry     living/controlled polymerization     gas phale polymerization process    

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Title Author Date Type Operation

Continuous deacylation of amides in a high-temperature and high-pressure microreactor

Journal Article

Frontiers of Catalysis Chemistry and Technology

Journal Article

Role of water chemistry on estrone removal by nanofiltration with the presence of hydrophobic acids

Xue JIN,Jiangyong HU

Journal Article

Hexavalent chromium in drinking water: Chemistry, challenges and future outlook on Sn(II)- and photocatalyst-based

Haizhou Liu, Xuejun Yu

Journal Article

Continuous-Flow Synthesis of the Nucleobase Unit of Remdesivir

Yongxing Guo, Minjie Liu, Meifen Jiang, Yuan Tao, Dang Cheng, Fen-Er Chen

Journal Article

Where physics meets chemistry: Thin film deposition from reactive plasmas

Andrew Michelmore, Jason D. Whittle, James W. Bradley, Robert D. Short

Journal Article

Improvement of Secondary Water Chemistry in Qinshan Nuclear Power Plant

Tao Jun,Kong Deping

Journal Article

Bioorthogonal chemistry based on-demand drug delivery system in cancer therapy

Journal Article

Engineering Research Progress of Electrochemical Microreaction Technology—A Novel Method for Electrosynthesis of Organic Chemicals

Siyuan Zheng, Junyu Yan, Kai Wang

Journal Article

The First Attempt for Accounts of Environmental Chemistry and Technology Research

Jinyong Liu, Yin Wang, Haoran Wei

Journal Article

Regulating surface chemistry of separator with LiF for advanced Li-S batteries

Journal Article

Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles of

Journal Article

compositions in sulfuric acid catalyzed isobutane/butene alkylation products: experimental and quantum chemistry

Lina Liang, Youzhi Liu, Weizhou Jiao, Qiaoling Zhang, Chao Zhang

Journal Article

Advance in FCC Process Reaction Chemistry

Xu Youhao and Wang Xieqing

Journal Article

The Progress on Chemistry and Technology of Synthetic Rubber in 20th Century

Wu Guanying

Journal Article