Structural influence of ordered mesoporous carbon supports for the hydrogenation of carbon monoxide to alcohols.
A series of ordered mesoporous carbon materials (OMCs) possessing well-ordered nanoporosity with different mesopore structures were synthesized by the template-synthesis route. Two different pore strucutes (2-dimensional hexagonal and 3-dimensional cubic structures) and two different framework-configurations (rod-type and hollow-type carbon frameworks) are prepared by using the two different silica templates and synthetic conditions. The ordered mesoporous carbon supported promoted-rhodium catalysts were preparted by an incipient wetness method. The promoted Rh-OMC catalysts are tested by a fixed bed reactor for the catalytic conversion of syngas-to-alcohols. The characteristics of the promoted Rh-OMCs catalysts were scrutinized through a series of different techniques, including transmission electron microscopy (TEM), powder X-ray diffraction (XRD), and N2 sorption analysis, and the catalytic performance was tested in a fixed-bed reactor. It was found that the promoted Rh-OMC catalysts exhibited the different catalytic activity and selectivity of alcohols, which could be attributed to the size of metal nanoparticles being confined by the different mesostructure of OMCs.
Research Center for Green Catalysis, Korea Research Institute of Chemical Technology, 141, Gajeong-ro, Yuseong-gu, Daejeon 305-600, South Korea.
Min-Ji
MJ
Kim
Ho-Jeong
HJ
Chae
Kyoung Su
KS
Ha
Kwang-Eun
KE
Jeong
Chul-Ung
CU
Kim
Soon-Yong
SY
Jeong
Tae-Wan
TW
Kim
D000327:Adsorption; D000438:Alcohols / Q000138:chemical synthesis*; D002244:Carbon / Q000737:chemistry*; D002248:Carbon Monoxide / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D006859:Hydrogen / Q000737:chemistry*; D006865:Hydrogenation; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D016062:Porosity; D013499:Surface Properties
D000438:Alcohols; D046911:Macromolecular Substances; D002244:Carbon; D002248:Carbon Monoxide; D006859:Hydrogen