李蓉, 左佑华, 徐立成, 花俊峰, 冯佳佳, 许立信, 叶明富, 万超. 焙烧温度和分散剂对Co0.8Cu0.2/CNC催化氨硼烷水解制氢性能的影响研究[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60462-7
引用本文: 李蓉, 左佑华, 徐立成, 花俊峰, 冯佳佳, 许立信, 叶明富, 万超. 焙烧温度和分散剂对Co0.8Cu0.2/CNC催化氨硼烷水解制氢性能的影响研究[J]. 燃料化学学报(中英文). DOI: 10.1016/S1872-5813(24)60462-7
LI Rong, ZUO Youhua, XU Licheng, HUA Junfeng, FENG Jiajia, XU Lixin, YE Mingfu, WAN Chao. The effects of calcination temperature and dispersants on the catalytic performance of Co0.8Cu0.2/CNC for the hydrolysis of ammonia borane to hydrogen were investigated[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60462-7
Citation: LI Rong, ZUO Youhua, XU Licheng, HUA Junfeng, FENG Jiajia, XU Lixin, YE Mingfu, WAN Chao. The effects of calcination temperature and dispersants on the catalytic performance of Co0.8Cu0.2/CNC for the hydrolysis of ammonia borane to hydrogen were investigated[J]. Journal of Fuel Chemistry and Technology. DOI: 10.1016/S1872-5813(24)60462-7

焙烧温度和分散剂对Co0.8Cu0.2/CNC催化氨硼烷水解制氢性能的影响研究

The effects of calcination temperature and dispersants on the catalytic performance of Co0.8Cu0.2/CNC for the hydrolysis of ammonia borane to hydrogen were investigated

  • 摘要: 氨硼烷(NH3BH3,AB)被认为是一种便携式制氢的理想储氢材料。本工作在常温下搅拌反应物得到Co0.8Cu0.2-ZIF前驱体,并高温焙烧此前驱体制备了一种双金属碳立方体(Co0.8Cu0.2/CNC)催化剂。此外,采用多种表征方法对催化剂的微观结构以及组成成分进行了研究。通过单一变量法探究了催化剂的变化规律。结果表明,少量Cu的加入会对Co0.8Cu0.2/CNC催化剂的立方体形貌有一定的稳固作用。当分散剂为CTAB且焙烧温度为873 K时,其催化AB水解制氢的活化能(Ea)为50.79 kJ/mol,转化频率(TOF)值高达23.37 min−1。此外,该催化剂经过25次循环后仍然可以催化AB完全水解制氢,表明该催化剂的稳定性能良好。

     

    Abstract: Ammonia borane (NH3BH3, AB) is considered as an ideal hydrogen storage material for portable hydrogen production. In this paper, a bimetallic carbon cube (Co0.8Cu0.2/CNC) catalyst was prepared by high-temperature calcination of the Co0.8Cu0.2-ZIF precursor, which was obtained by stirring the reactants at room temperature. In addition, the microstruc-ture and composition of the catalyst were investigated using various characterization methods. The change regularity of the catalyst was explored through the single-variable method. The results showed that the addition of a small amount of Cu had a stabilizing effect on the cubic morphology of the Co0.8Cu0.2/CNC catalyst. When the dispersant was CTAB and the calcination temperature was 873 K, the activation energy (Ea) for catalyzing the hydrolysis of AB to hydrogen was 50.79 kJ/mol with the transition frequency (TOF) value as high as 23.37 min−1. Moreover, the cata-lyst could still catalyze the complete hydrolysis of AB to hydrogen after 25 cycles, which indicated that the catalyst had good stability performance.

     

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