Effects of Ru nanoparticle sizes confined in cavities of SBA-16 on the catalytic performance of Fischer-Tropsch synthesis reaction  

作　　者：Jian Chen Jinlin Li Yanxi Zhao Yuhua Zhang Jingping Hong 

机构地区：[1]Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission&Ministry of Education,South-Central University for Nationalities,Wuhan 430074,Hubei,China [2]College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,Jiangsu,China

出　　处：《Journal of Natural Gas Chemistry》2012年第6期673-679,共7页天然气化学杂志（英文版）

基　　金：supported by the National Natural Science foundation of China(21073238);the National Basic Research Program of China(2011CB211704);the Natural Science Foundation of Hubei Province of China(Grant No.2009CDA049);the Special Fund for basic Scientific Research of Central Colleges,South-Central University for Nationalities(Grant No.ZZY10005)

摘　　要：Ru nanoparticles with different sizes confined in the cavities of mesoporous SBA-16 have been successfully synthesized by incipient wetness impregnation method with a Ru loading of 4 wt%. The catalysts were characterized by XRD, N2 adsorption-desorption, H2-TPR, H2-TPD, O2-titration and TEM. The catalytic performance of Fischer-Tropsch synthesis over the catalyst was tested in a fixed-bed reactor. The addition of citric acid in the impregnation procedure shows a significant influence on the size of Ru nanoparticles. The selectivity to C5＋ increases, while the selectivities to methane and C2-C4 light hydrocarbons decrease with Ru average particles size from 2.0 nm to 9.3 nm, . The Ru catalyst confined in the SBA-16 with average nanoparticle size of 5.3 nm gives the best activity.Ru nanoparticles with different sizes confined in the cavities of mesoporous SBA-16 have been successfully synthesized by incipient wetness impregnation method with a Ru loading of 4 wt%. The catalysts were characterized by XRD, N2 adsorption-desorption, H2-TPR, H2-TPD, O2-titration and TEM. The catalytic performance of Fischer-Tropsch synthesis over the catalyst was tested in a fixed-bed reactor. The addition of citric acid in the impregnation procedure shows a significant influence on the size of Ru nanoparticles. The selectivity to C5＋ increases, while the selectivities to methane and C2-C4 light hydrocarbons decrease with Ru average particles size from 2.0 nm to 9.3 nm, . The Ru catalyst confined in the SBA-16 with average nanoparticle size of 5.3 nm gives the best activity.

关 键 词：Fischer-Tropsch synthesis Ru catalyst SBA-16 particle sizes 

分 类 号：TQ113.247[化学工程—无机化工] TB383[一般工业技术—材料科学与工程]