碳纳米管负载的钴催化剂在费托合成反应中的粒子尺寸效应（英文）

• 作 者: Ali Nakhaei Pour Elham Hosaini Mohammad Izadyar Mohammad Reza Housaindokht
• 机 构: Department of Chemistry,Ferdowsi University of Mashhad,
• 出 处: 催化学报
• 发表日期: 2015年08期
• 关键词: 费托合成 碳纳米管 surfactant 粒子尺寸 nanotube impregnation Fischer sizes 催化剂 prepare

The effect of Co particle size on the Fischer-Tropsch synthesis(FTS) activity of carbon nanotube(CNT)-supported Co catalysts was investigated. Microemulsion(using water-to-surfactant molar ratios of 2 to12) and impregnation techniques were used to prepare catalysts with different Co particle sizes. Kinetic studies were performed to understand the effect of Co particle size on catalytic activity. Size-dependent kinetic parameters were developed using a thermodynamic method, to evaluate the structural sensitivity of the CNT-supported Co catalysts. The size-independent FTS reaction rate constant and size-independent adsorption parameter increased with increasing reaction temperature. The Polani parameter also depended on catalyst particle size, because of changes in the catalyst surface coverage.

The effect of Co particle size on the Fischer-Tropsch synthesis (FTS) activity of carbon nanotube (CNT) -supported Co catalysts was investigated. Microemulsion (using water-to-surfactant molar ratios of 2 to 12) and impregnation techniques were used to prepare catalysts with different Co particle sizes. Kinetic studies were performed to understand the effect of Co particle size on catalytic activity. Size-dependent kinetic parameters were developed using a thermodynamic method, to evaluate the structural sensitivity of the CNT- supported Co catalysts. -independent FTS reaction rate constant and size-independent adsorption parameter increased with increasing reaction temperature. The Polani parameter also depended on catalyst particle size, because of changes in the catalyst surface coverage.