天然气化工2011，Vol.36Issue(1)：4-6,15,4.
二氧化碳加氢甲烷化镍锰基催化剂的研究
Study on Ni-Mn-based catalysts for methanation of carbon dioxide
王承学 1龚杰1
作者信息
- 1. 长春工业大学,化学工程学院,长春,130012
- 折叠
摘要
Abstract
Effects of Mn promoter amounts and preparation methods on the activity of Ni/γ-Al203 catalysts for CO2 methanation by hydrogenation were studied, and the catalysts were characterized by TPR, XRD and BET. The results showed that under the reaction conditions of atmospheric pressure, 400℃, GHSV=6000h-1 and n(H2):n(CO2)=4:1, the Mn-Ni/γ-Al203 catalyst with Mn/Ni atomic ratio of 1:2 prepared by Mn-Ni co-impregnation displayed the highest activity, over which the conversion of CO2 reached 77.92％ and the selectivity to methane was over 96％. The results of catalyst characterization indicated that Mn promoter was well dispersed on the surface of γ-Al2O2 that could significantly reduce the particle size of nickel crystallites and improve the interaction between nickel species and the support, which resulted that the catalyst was more easily reduced and exhibited significantly enhanced activity.关键词
二氧化碳/加氢/甲烷化/Ni-Mn基催化剂/锰助剂Key words
carbon dioxide/ hydrogenation/ methanation/ Ni-Mn based catalyst/ Mn promoter分类
化学化工引用本文复制引用
王承学,龚杰..二氧化碳加氢甲烷化镍锰基催化剂的研究[J].天然气化工,2011,36(1):4-6,15,4.
