燃料化学学报2018，Vol.46Issue(1)：84-91,8.
焙烧条件对浆态床CO甲烷化Ni-Al2O3催化剂性能的影响
Influence of calcination conditions on the performance of Ni-Al2O3 catalyst for CO methanation in slurry-bed reactor
摘要
Abstract
Effects of calcination temperature and calcination time on the crystal structure, reduction characteristics, pore structure and CO methanation performance of Ni-Al2 O3 catalyst were investigated by using a mechanical-chemical method to prepare Ni-Al2 O3 catalyst. The catalysts were characterized by XRD, H2-TPR, BET, XPS and TPH. The results showed that the calcination temperature increased from 350℃ to 700℃, NiO was still well dispersed on the surface of the carrier, and the reduction peak temperature decreased to high temperature. The specific surface area of the cat-450 sample obtained by calcination at 450 ℃ was 350 m2/g. The results showed that with the calcination temperature increased from 350℃ to 700℃, CO conversion, CH4 selectivity and yield were increased first and then decreased, reaching the maximum at 450 ℃, with 97. 8％, 88. 2％ and 86. 2％, respectively. In addition, the calcination time has little effect on the reduction performance of the catalyst, and has small influence on the crystal structure of the carrier Al2 O3 . With the increase of calcination time, CO conversion decreased slightly and then increased with the better calcination time of 4 h.关键词
甲烷化/Ni-Al2O3催化剂/机械化学法/浆态床/焙烧条件Key words
methanation/Ni-Al2 O3/mechanical-chemical method/slurry-bed reactor/calcination conditions分类
化学引用本文复制引用
莫文龙,肖艳,马凤云,钟梅,刘景梅,艾沙·努拉洪..焙烧条件对浆态床CO甲烷化Ni-Al2O3催化剂性能的影响[J].燃料化学学报,2018,46(1):84-91,8.基金项目
The project was supported by the National High Technology Research and Development Program of China (863 Program, 2015AA050502) and Natural Science Foundation of Xinjiang University (BS160221). 国家高技术研究发展计划(863计划, 2015AA050502)和新疆大学自然科学基金(BS160221)资助 （863 Program, 2015AA050502）
