Rh/CeO_(x-)C_(3)N_(4)催化剂的制备及其催化水合肼制氢性能研究  

Preparation of Rh/CeO_(x-)C_(3)N_(4)catalyst and its catalytic dehydrogenation of hydrazine hydrate

作　　者：郑君宁 吴慧 刘勇 李贵 许立信[1] 万超[1,2] 叶明富[1,3,4,5] ZHENG Jun-ning;WU Hui;LIU Yong;LI Gui;XU Li-xin;WAN Chao;YE Ming-fu(College of Chemistry and Chemical Engineering,Institute of Engineering,Anhui University of Technology,Ma’anshan 243000,China;College of Chemical Engineering and Biological Engineering,Zhejiang University,Hangzhou 310027,China;Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Nankai University,Tianjin 300071,China;Anhui Key Laboratory of Photoelectric-Magnetic Functional Materials,Anhui Key Laboratory of Functional Coordination Compounds,Anqing Normal University,Anqing 246011,China;Jiangxi Province Engineering Research Center of Ecological Chemical Industry,Jiujiang University,Jiujiang 332005,China)

机构地区：[1]安徽工业大学化学与化工学院工程研究院,安徽马鞍山243000 [2]浙江大学化学工程与生物工程学院,浙江杭州310027 [3]南开大学先进能源材料化学教育部重点实验室,天津300071 [4]安庆师范大学,安徽省光电磁性功能材料重点实验室,功能配合物安徽省重点实验室,安徽安庆246011 [5]九江学院江西省生态化工工程研究中心,江西九江332005

出　　处：《燃料化学学报（中英文）》2023年第7期1018-1025,共8页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金青年基金(22108238);国家自然科学基金联合基金(U22A20408);安徽省自然科学基金青年基金(1908085QB68);安徽省科技重大专项(201903a05020055);中国博士后面上项目(2019M662060);特别资助站中项目(2020T130580);安徽省光电磁性功能材料重点实验室开放研究基金(ZD2021007);江西省生态化工工程研究中心开放研究基金(STKF2109);2022年国家级大学生创新创业训练计划(202210360037)资助。

摘　　要：本研究将CeO_(x)引入催化剂载体中,在N_(2)气氛下高温焙烧制得CeO_(x)掺杂的氮化炭材料作为载体,通过浸渍还原法将活性组分Rh负载到CeO_(x-)C_(3)N_(4)载体上合成Rh/CeO_(x-)C_(3)N_(4)催化剂,并探究其对催化水合肼制氢的性能的影响。研究结果表明,Rh/CeO_(x-)C_(3)N_(4)催化剂中,活性组分Rh与CeO_(x)之间存在协同效应,其中,CeO_(x)的掺杂有效地分散和稳定金属活性组分,为催化反应提供更多的活性位点。因此,该催化剂对催化水合肼制氢具有良好的催化活性。所制备的Rh/CeO_(x-)C_(3)N_(4)催化剂催化水合肼展现出最好的催化活性,初始转化率TOF值高达1959.24 h^(-1)。循环五次后,催化活性依然保持良好,表明其拥有良好的稳定性。In this paper,CeO_(x)was doped into the catalytic system and cerium-doped carbon nanomaterial was prepared by roasting at high temperature in N_(2) atmosphere as the carrier.Rh/CeO_(x-)C_(3)N_(4)catalyst was synthesized by loading the active component Rh onto CeO_(x-)C_(3)N_(4)carrier through impregnation reduction method,and its influence on catalytic performance of hydrazine hydrate dehydrogenation was investigated.The results showed that there was a synergistic effect between the active component Rh and CeO_(x)in Rh/CeO_(x-)C_(3)N_(4)catalyst,and the doping of CeO_(x)effectively dispersed and stabilized the metal active component,providing more active sites for catalytic reaction.Therefore,the catalyst has good catalytic activity for the dehydrogenation of hydrazine hydrate.The prepared Rh/CeO_(x-)C_(3)N_(4)catalyst showed the best catalytic activity for hydrazine hydrate,and the initial conversion TOF was up to 1959.24 h^(-1).After 5 cycles,the catalytic activity remained good,indicating good durability.

关 键 词：铑催化剂 水合肼 水解制氢 CeO_(x)掺杂的氮化碳材料 

分 类 号：O643.36[理学—物理化学]