RhNi/SBA-15纳米催化剂的制备及其催化水合肼分解制氢性能  

Preparation of RhNi/SBA-15 Nano-Catalyst and Its Catalytic Performance for Hydrogen Production from Hydrazine Hydrate Decomposition

作　　者：邱小魁 孙佳丽 花俊峰 郑君宁 万超 QIU Xiaokui;SUN Jiali;HUA Junfeng;ZHENG Junning;WAN Chao(Anhui Guibao Silicones Company Limited,Ma’anshan 243000,China;Zhejiang Environment Technology Company Limited,Hangzhou 310027,China;School of Chemistry and Chemical Engineering,Anhui University of Technology,Ma’anshan 243000,China;College of Chemical Engineering and Biological Engineering,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]安徽硅宝有机硅新材料有限公司,安徽马鞍山243000 [2]浙江省环境科技有限公司,浙江杭州310027 [3]安徽工业大学化学与化工学院,安徽马鞍山243000 [4]浙江大学化学工程与生物工程学院,浙江杭州310058

出　　处：《化学反应工程与工艺》2023年第4期313-318,349,共7页Chemical Reaction Engineering and Technology

基　　金：国家自然科学基金青年基金项目(22108238);中国博士后面上项目(2019M662060);特别资助站中项目(2020T130580);浙江省化工高效制造技术重点实验室开放项目(ZJKL-ACEMT-1802)

摘　　要：通过浸渍还原法将RhNi纳米颗粒负载在SBA-15(介孔二氧化硅)上制备出不同金属比的RhNi/SBA-15催化剂,进一步考察催化剂的结构及其催化水合肼制氢的性能。结果表明:RhNi/SBA-15催化剂中形成RhNi双金属,Rh和Ni双金属之间的协同作用有效提升催化剂活性。所制RhNi/SBA-15催化剂中Rh和Ni物质的量之比为9:1,在反应温度为323K,NaOH浓度为0.15 mol/L时,该催化剂具有较高的活性,转化频率(TOF)为2569.6h^(-1),经过5次循环后仍保持良好的催化活性。RhNi/SBA-15 catalysts with different metal ratios were prepared by loading RhNi nanoparticles onto SBA-15(mesoporous silica)by impregnation reduction method.The structure and catalytic performance of hydrous hydrazine for hydrogen production were further investigated.The results showed that RhNi bimetallic nanoparticles formed in RhNi/SBA-15 catalyst,and the synergistic effect between Rh and Ni could effectively improve the catalytic activity.Rh_(9)Ni_(1)/SBA-15 catalyst for the catalytic decomposition of hydrazine hydrate exhibited optimum catalytic activity,transformation frequency reached 2569.6 h^(-1) under the conditions of temperature 323 K,NaOH concentration 0.15 mol/L.The Rh_(9)Ni_(1)/SBA-15 catalyst has high catalytic activity was maintained after five cycles.

关 键 词：水合肼 RhNi纳米颗粒 分解制氢 

分 类 号：O643.36[理学—物理化学]