化工学报Issue(8)：2997-3003,7.DOI:10.3969/j.issn.0438-1157.2014.08.021
Ni-Mn/Al2O3催化剂在浆态床中CO甲烷化催化性能
Catalytic performance of Ni-Mn/Al2O3 catalyst for CO methanation in slurry-bed reactor
摘要
Abstract
Ni-Mn/Al2O3 catalysts with different contents of Mn were prepared by co-impregnation method, and the catalytic performance for CO methanation in slurry-bed reactor was studied. The catalysts were characterized by XRD, H2-TPR, BET, TEM and H2-chemisorption. The addition of Mn promoted the dispersion of Ni species, weakened the interaction between Ni species and support, decreased the reduction temperature, increased the catalyst specific surface area and decreased the particle size of active metallic Ni. With the increase of Mn content, the catalytic performance of Ni-Mn/Al2O3 catalysts increased firstly and then decreased, and the catalyst Ni-Mn/Al2O3 with Mn content of 4%exhibited the best catalytic performance. Excess addition of Mn decreased catalytic performance, because the active component Ni was covered by Mn. The investigation on effects of reaction temperature and reaction pressure showed that under the reaction conditions of 280℃ and 1.5 MPa, conversion of CO and selectivity of CH4 for the catalyst sample 16Ni4Mn/Al2O3 reached 96.2% and 88.8%, respectively.关键词
浆态床反应器/合成气/甲烷化/天然气/Ni-Mn/Al2O3催化剂/Mn助剂Key words
slurry-bed reactor/syngas/methanation/natural gas/Ni-Mn/Al2O3 catalyst/manganese promoter分类
化学化工引用本文复制引用
孟凡会,常慧蓉,李忠..Ni-Mn/Al2O3催化剂在浆态床中CO甲烷化催化性能[J].化工学报,2014,(8):2997-3003,7.基金项目
国家重点基础研究发展计划项目（2012CB723105）；山西省青年基金项目（2013021007-4）；中国博士后科学基金项目（2013M541210）；太原理工大学校青年基金项目（2012L040，2013T091）。@@@@supported by the National Basic Research Program of China (2012CB723105), the Youth Foundation of Shanxi Province (2013021007-4), China Postdoctoral Science Foundation (2013M541210) and the Youth Foundation of Taiyuan University of Technology (2012L040,2013T091) （2012CB723105）
