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Green and selective hydrogenation of aromatic diamines over the nanosheet Ru/g-C_(3)N_(4)-H_(2) catalyst prepared by ultrasonic assisted impregnation-deposition method

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Green Energy & Environment 2022年第6期7卷 1361-1376页

作者： Huanhuan Yang Liguo Wang Shuang Xu Yan Cao Peng He Jiaqiang Chen Zheng Zheng Huiquan Li Key Laboratory of Green Process and Engineering National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing100190China Chemical and Biochemical Engineering Technical University of DenmarkLyngby 2800 KgsDenmark Sino-Danish College University of Chinese Academy of SciencesBeijing100049China Sino-Danish Center for Education and Research University of Chinese Academy of SciencesBeijing100049China School of Chemical Engineering University of Chinese Academy of SciencesBeijing100049China Dalian National Laboratory for Clean Energy Dalian116023China

In this study,nanosheet g-C_(3)N_(4)-H_(2) was prepared by thermal exfoliation of bulk g-C_(3)N_(4) under hydrogen.A series of Ru/g-C_(3)N_(4)-H_(2) catalysts with Ru species supported on the nanosheet g-C_(3)N_(4)-H_(2) were synthesized via ultrasonic assisted impregnation-deposition *** Ru nanoparticles(99%4,40-diaminodicyclohexylmethane selectivity,corresponding to a reaction activity of 35.7 mol_(MDA) mol_(Ru)^(-1) h^(-1).Moreover,the reaction activity of catalyst in the fifth run was 36.5 mol_(MDA) mol_(Ru)^(-1) h^(-1),which was comparable with that of the fresh *** computational results showed that g-C_(3)N_(4) as support was favorable for adsorption and dissociation of H_(2) ***,the substrate scope can be successfully expanded to a variety of other aromatic ***,this work provides an efficient and green catalyst system for selective hydrogenation of aromatic diamines.

关键词： Nanosheet carbon nitride Ultrafine Ru species Selective hydrogenation aromatic diamine Alicyclic diamine

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Synthesis and characterization of novel polyimides based on thiazole-containing diamine

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Chinese Chemical Letters 2007年第10期18卷 1203-1204页

作者： Xin Zhao Yan Feng Li Shu Jiang Zhang Xiao Long-Wang Yu Shao State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringInstitute of Biochemical Engineering ＆ Environmental Technology Lanzhou University Lanzhou 730000 China

A new kind of aromatic diamine monomer containing thiazole unit, 2-amino-5-（4-aminophenyl）-thiazole （AAPT）, was synthesized in three steps, starting from 4-nitroacetophenone. A novel thiazole-containing polyimide was prepared via the polycondensation of AAPT with 6FDA by one-step method. The resulting polyimide exhibits excellent solubility, film-forming capability and high thermal resistance.

关键词： Thiazole Thiazole-containing monomer Synthesis aromatic diamine

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