负载型双金属催化剂的制备及其等离子体催化氨分解制氢性能

引用本文: 孙帅其, 易颜辉, 王丽, 张家良, 郭洪臣. 负载型双金属催化剂的制备及其等离子体催化氨分解制氢性能[J]. 物理化学学报, 2017, 33(6): 1123-1129. doi: 10.3866/PKU.WHXB201703301 shu

Citation: SUN Shuai-Qi, YI Yan-Hui, WANG Li, ZHANG Jia-Liang, GUO Hong-Chen. Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis[J]. Acta Physico-Chimica Sinica, 2017, 33(6): 1123-1129. doi: 10.3866/PKU.WHXB201703301 shu

负载型双金属催化剂的制备及其等离子体催化氨分解制氢性能

1.
大连理工大学化工学院催化化学与工程系, 精细化工国家重点实验室, 辽宁大连 116024;
2.
大连理工大学物理与光电工程学院, 辽宁大连 116024
基金项目:
国家自然科学基金(20473016,20673018)资助项目

摘要: 利用等体积浸渍法制备了Fe-Co、Fe-Ni、Mo-Co、Mo-Ni双金属催化剂(总金属含量均为10%(w，质量分数)，双金属摩尔比均为1:1)，考察了其在等离子体条件下氨分解活性，结果表明Fe-Ni双金属催化剂表现出较好的协同作用。在此基础上，进一步考察了Fe/Ni摩尔比对其活性的影响。结果表明：当Fe/Ni摩尔比为6/4时，氨分解活性最好，而且该双金属催化剂稳定性良好。采用N₂物理吸附、X射线衍射(XRD)、H₂-程序升温还原(H₂-TPR)和高分辨透射电子显微镜(HRTEM)对催化剂的物化性质、还原性能、微观形貌等进行了研究。结果表明：活性较好的Fe-Ni双金属催化剂中，Fe与Ni形成尖晶石结构NiFe₂O₄，该结构有利于Fe和Ni的还原，即活性组分易恢复金属态，这可能是其活性较高的原因。

关键词:

English

Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis

1.
State Key Laboratory of Fine Chemicals, Department of Catalytic Chemistry and Engineering, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China;
2.
School of Physics and Optoelectronic Engineering, Dalian University of Technology, Dalian 116024, Liaoning Province, P. R. China
Received Date: 28 February 2017
Revised Date: 27 March 2017
Available Online: 30 March 2017
Fund Project:
The project was supported by the National Natural Science Foundation of China (20473016, 20673018)

Abstract: Bimetallic Fe-Co, Fe-Ni, Mo-Co, and Mo-Ni catalysts, with total metal contents of 10 wt% and bimetallic molar ratios of 1:1, were prepared by the incipient wetness impregnation method and their activities for ammonia decomposition in the presence of plasma were studied. The Fe-Ni bimetallic catalyst exhibited a better synergistic effect than the other three bimetallic catalysts. The effect of the Fe/Ni molar ratio on its catalytic activity was also investigated. A 6:4 Fe/Ni molar ratio resulted in the highest ammonia decomposition activity and stability. The catalysts were characterized by N₂ adsorption-desorption, XRD, H₂-TPR, and HRTEM. The characterization results indicated that NiFe₂O₄ with a spinel structure was formed in the optimal Fe-Ni bimetallic catalysts and this structure favors the reduction of Fe and Ni. In other words, it is easy to achieve the metallic state of active components for the Fe-Ni bimetallic catalysts, which could be the reason for the high catalytic activity of bimetallic catalysts for NH₃ decomposition.

Key words:

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沈阳化工大学材料科学与工程学院沈阳 110142

负载型双金属催化剂的制备及其等离子体催化氨分解制氢性能

English

Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

负载型双金属催化剂的制备及其等离子体催化氨分解制氢性能

English

Preparation and Performance of Supported Bimetallic Catalysts for Hydrogen Production from Ammonia Decomposition by Plasma Catalysis

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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