A study of degradation phenomenon of Ni-Pt/CeO2 catalyst towards hydrogen generation from hydrous hydrazine

时间:2018-05-25作者:浏览量:41


标题

A study of degradation phenomenon of Ni-Pt/CeO2 catalyst towards hydrogen generation from hydrous hydrazine

作者

作者:Dai, H (Dai, Hao)[1 ]; Qiu, YP (Qiu, Yu-Ping)[1 ]; Dai, HB (Dai, Hong-Bin)[1 ]; Wang, P (Wang, Ping)[1 ]

期刊信息


INTERNATIONAL JOURNAL OF HYDROGEN ENERGY


卷:42

期:26

页:16355-16361

DOI:10.1016/j.ijhydene.2017.05.086

出版年:JUN 29 2017

文献类型:Article

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摘要

Catalytic decomposition of hydrous hydrazine (N2H4.H2O) has received considerable attention as a promising chemical hydrogen storage system. But the currently available N2H4.H2O decomposition catalysts always showed poor durability. In the present paper, we report an experimental study of the performance degradation of Ni-Pt/CeO2 catalyst using TPD-MS, FTIR, HRTEM techniques. Our study on the post-used Ni-Pt/CeO2 catalyst found that a predominant N-2 species and various reaction intermediates over-strongly bound on the catalyst surface. Furthermore, the amount of the bound N-2 species at Ni sites is approximately linearly correlated with the activity decay degree. These results provide a straightforward explanation of the performance degradation phenomenon and highlight the critical role of adsorbate/catalyst interaction in determination of the catalytic performance. (C) 2017 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

关键词

作者关键词:Hydrogen storage; Catalyst; Performance degradation; Binding of intermediate

作者信息

作者信息

通讯作者地址:Wang, P (通讯作者)

显示更多South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China.


地址:

显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China


电子邮件地址:mspwang@scut.edu.cn

出版商

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

类别分类

类别 / 分类

研究方向:Chemistry; Electrochemistry; Energy & Fuels

Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels