Pei Y.,Guangzhou Pysynchem. Co. |
Jian S.,South China University of Technology |
Chen Y.,Guangzhou Pysynchem. Co. |
Wang C.,Guangzhou Pysynchem. Co.
RSC Advances | Year: 2015
Activated carbon supported CoCuMn catalysts prepared by incipient co-impregnation were studied using the Fischer-Tropsch reaction, XRD, HR-TEM, and H2-TPR techniques. The results showed that good activities and selectivities towards C1-C14 alcohols can be obtained with the fractions of C2-C5 alcohols up to 80% in total alcohol distribution. It was found that increasing the Cu/Co composition ratio resulted in the enhancement of alcohol selectivity. Furthermore, our characterizations revealed that large Cu nano-particles were decorated by small spherical Co nano-particles; moreover, we speculate that such constructions were responsible for the favored formation of C2+ alcohols. It was also considered that smaller cobalt particles probably resulted in a greater number of Co0 species and thus contributed to the improvement of CO conversion. © The Royal Society of Chemistry 2015.