Effect of Manganese Promotion on Al-Pillared Montmorillonite Supported Cobalt Nanoparticles for Fischer-Tropsch Synthesis

Bulletin of the Korean chemical society

S. T. Hussain¹  B. Muhammad¹  N. Ahmad¹  S. M. Abbas¹  Y. Khan¹  N. Ali¹ 

关键词: Cobalt;    Aluminium;    Montmorillonite;    Manganese promotion;    FT Synthesis;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

The effect of Mn-promotion on high surface area Al-pillared montmorillonite (AlMMT) supported Co nanoparticles prepared by hydrothermal method have been investigated. A series of different weight% Mnpromoted Co nanoparticles were prepared and characterized by XRD, TPR, TGA, BET and SEM techniques. An increase in the surface area of MMT is observed with Al-pillaring. Fischer-Tropsch catalytic activity of the as prepared catalysts was studied in a fixed bed micro reactor at 225 oC, H2/CO = 2 and at 1 atm pressure. The data showed that by the addition of Mn the selectivity of C1 dropped drastically while that of C2-C12 hydrocarbons increased significantly over all the Mn-promoted Co/AlMMT catalysts. The C13-C20 hydrocarbons remained almost same for all the catalysts while the selectivity of C21+ long chain hydrocarbons decreased considerably with the addition of Mn. The catalyst with 3.5%Mn showed lowest C21+ and highest C2-C12 hydrocarbons selectivity due to cracking of long chain hydrocarbons over acidic sites of MMT.

【 授权许可】

Unknown