燃料化学学报2012，Vol.40Issue(1)：54-58,5.
焙烧及还原温度对Co-Pt-ZrO2/γ-Al2O3催化剂费托合成反应性能的影响
Effects of calcination and reduction temperature on the performance of Co-Pt-ZrO2/γ-A12O3 catalysts for Fischer-Tropsch synthesis
摘要
Abstract
Co-Pt-ZrO2/γ-Al2 O, catalysts were prepared by using impregnation method and characterized by BET, XRD and TPR techniques; the effects of calcination and reduction temperature on their catalytic performance for Fischer-Tropsch synthesis (FTS) were investigated in a slurry-phase continuously stirred tank reactor (CSTR). The results showed that the catalysts calcined at high temperature exhibits low activity and selectivity to heavy hydrocarbons, since high temperature calcination may lead a strong interaction between cobalt species and -γ-Al2O3 support, the formation of less reducible cobalt aluminate species, and aggregation of cobalt oxide crystals. Cobalt oxides cannot be reduced completely at a low temperature, while the aggregation or sintering of the active species may be prominent by carrying out the reduction at extra-high temperature; all these can deteriorate the catalytic performance of Co-Pt-ZrO2/γ-Al2O3. Under 483 K, 2.4 Mpa, a H2/CO molar ratio of 2.0, and a space velocity of 3.6 L/(gcat-h), the catalyst 31.08%Co-0. Ll%Pt-7.16%ZrO2/Al2O3 calcined at 673 K and reduced in hydrogen at 653 K exhibits high catalytic performance for FTS; the conversion of CO and selectivity to C5+ reach 27.0% and 83.0% , respectively.关键词
Co-Pt-ZrO2/γ-Al2O3/焙烧温度/还原温度/费托合成Key words
Co-Pt-ZrO2/7-Al2O3/ calcination temperature/ reduction temperature/ Fischer-Tropsch synthesis分类
化学化工引用本文复制引用
孙燕,孙启文,蒋凡凯,刘继森,张宗森..焙烧及还原温度对Co-Pt-ZrO2/γ-Al2O3催化剂费托合成反应性能的影响[J].燃料化学学报,2012,40(1):54-58,5.基金项目
国家重点基础研究发展规划(973计划,2010CB736203). （973计划,2010CB736203）
