EFFECTS OF PRETREATMENT METHODS ON STRUCTURE AND CATALYTIC ACTIVITY OF Co/SiO2 FOR FISCHER-TROPSCH SYNTHESIS
IntroductionFischer-Tropsch synthesis(FTS) is an important route for ultra clean liquid fuel synthesis from coal-based or natural-gas-based syngas at economically feasible cost. Supported cobalt is the preferred catalyst for the FTS because of its high activity and low water-gas shift activity. Silica is commonly used as the support material due to its high surface area and its inertness. Furthermore, well-dispersed active phases can be obtained. The active species of cobalt-based catalysts used in the FTS is the metallic phase, which is produced by pretreatment of the precursors in a reduction atmosphere prior to use in the reaction. However, less attention has been paid to how the pretreatment method influences the physical properties and the catalytic performance of catalysts. Iglesia and coworkers demonstrated that direct reduction of the dried impregnate improved the performance significantly. Exxon claimed that the reduction-oxidation (redox) pretreatment of supported cobalt catalysts could increase catalytic activity.
Shifang Mu Litao Jia Debao Li Bo Hou Yao Xu Jiangang Chen Yuhan Sun
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Science State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, The Chinese Academy of Science
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
239-240
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）