CeO2/Ni/Mo/SBA-15 甲烷二氧化碳重整催化剂的表征和催化性能

doi:10.1016/S1872-2067(11)60347-1

催化学报 ›› 2012, Vol. 33 ›› Issue (4): 637-644.DOI: 10.1016/S1872-2067(11)60347-1

CeO₂/Ni/Mo/SBA-15 甲烷二氧化碳重整催化剂的表征和催化性能

黄健1,3, 马人熊2, 高志华1, 沈朝峰1, 黄伟1,*

1太原理工大学教育部和山西省煤科学与技术重点实验室, 山西太原 030024; 2中国科学院工程与热物理研究所, 北京 100190; 3山西省运城学院, 山西运城 044000

收稿日期:2011-10-21 修回日期:2011-12-05 出版日期:2012-04-13 发布日期:2015-09-09

Characterization and Catalytic Activity of CeO₂-Ni/Mo/SBA-15 Catalysts for Carbon Dioxide Reforming of Methane

HUANG Jina1,3, MA Renxiong2, GAO Zhihua1, SHEN Chaofeng1, HUANG Wei1,*

1Key Laboratory of Coal Science and Technology of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China; 2Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China; 3Department of Applied Chemistry, Yuncheng University, Yuncheng 044000, Shanxi, China

Received:2011-10-21 Revised:2011-12-05 Online:2012-04-13 Published:2015-09-09

摘要/Abstract

摘要： 考察了 CeO₂ 修饰及未修饰的 Ni/Mo/SBA-15 催化剂在 CH₄-CO₂ 重整上的催化性能并采用 N₂ 吸脱附、CO₂ 程序升温脱附、H₂ 程序升温还原、傅里叶红外光谱、X 射线衍射、扫描电子显微镜和 X 射线光电子能谱对催化剂进行了表征. 结果表明, 在常压, 800 ºC 条件下, 经过 100 h 在线评价后, Ni/Mo/SBA-15 和 CeO₂/Ni/Mo/SBA-15 催化剂仍具有高的反应活性和规整的六方介孔结构, 其中 CeO₂ 修饰的 CeO₂/Ni/Mo/SBA-15 催化剂表面没有积炭形成, 表明 CeO₂ 的加入促进了 Ni 物种在 SBA-15 介孔分子筛表面的分散, 从而阻止了 Ce/Ni/Mo/SBA-15 催化剂上 Ni 的烧结和积炭.

关键词: 二氧化碳重整, 甲烷, 镍, 钼, 介孔分子筛 SBA-15, 铈修饰

Abstract: A Ni/Mo/SBA-15 catalyst was modified with CeO₂ and compared with the unmodified catalyst. The catalysts were characterized by N₂ adsorption, CO₂ temperature-programmed desorption, H₂ temperature-programmed reduction, Fourier transform infrared spectrometer, X-ray diffraction, scanning electron microscopy, and X-ray photoelectron spectroscopy. Both the Ni/Mo/SBA-15 and CeO₂/Ni/Mo/SBA-15 catalysts gave good catalytic activities at atmospheric pressure. The CeO₂ impregnated Ni/Mo/SBA-15 catalyst exhibited excellent stability at 800 ºC for 100 h on stream, and after the reaction, carbon deposits were not formed on the catalyst. The Ni/Mo/SBA-15 and CeO₂/Ni/Mo/SBA-15catalysts had a regular hexagonal mesoporous structure. The nickel species and the Ce-Mo oxide components were all in the SBA-15 mesopores. This prevented carbon deposition and sintering of the nickel species in the CeO₂/Ni/Mo/SBA-15 catalyst.

Key words: carbon dioxide reforming, methane, nickel, molybdenum, mesoporous molecular sieve SBA-15, cerium-promoted

黄健, 马人熊, 高志华, 沈朝峰, 黄伟. CeO₂/Ni/Mo/SBA-15 甲烷二氧化碳重整催化剂的表征和催化性能[J]. 催化学报, 2012, 33(4): 637-644.

HUANG Jian, MA Ren-Xiong, GAO Zhi-Hua, SHEN Chao-Feng, HUANG Wei. Characterization and Catalytic Activity of CeO₂-Ni/Mo/SBA-15 Catalysts for Carbon Dioxide Reforming of Methane[J]. Chinese Journal of Catalysis, 2012, 33(4): 637-644.

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CeO₂/Ni/Mo/SBA-15 甲烷二氧化碳重整催化剂的表征和催化性能

Characterization and Catalytic Activity of CeO₂-Ni/Mo/SBA-15 Catalysts for Carbon Dioxide Reforming of Methane

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