Characteristics of mesoporous carbons supported Mo catalysts in thiophene hydrodesulfurization
The potential of two different mesoporous carbon materials, CMK-1 and CMK-3 supported sulfided Mo catalysts for hydrodesulfurization of thiophene at specific conditions was explored to investigate the effect of different pore sizes, surface oxygen functional groups, metal dispersion, and presulfidation temperature. The Mo catalysts (1~14.8 wt ％ of Mo) supported on mesoporous carbons were prepared with (NH4)6Mo7O24 4H2O. For comparison, commercial activated carbon (Darco G-60) and alumina ( -Al2O3) were used as a support for the Mo supported catalysts. Characterization of the supports and the catalysts was carried out by XRD, BET, EDS, FT-IR, acid-base titration, TEM and CO chemisorption. Sulfidation of carbon supported catalysts was favored at 573 K, whereas 673 K promoted the sulfidation of alumina supported catalysts. 10 wt ％ Mo supported catalysts showed the highest thiophene hydrodesulfurization activity in all supports. CMK-3 supported Mo catalysts were superior to all other catalysts because of the larger pore size and higher acidic functional groups.
M. Hussain S.-K. Ihm
Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701, Korea
国际会议
北京
英文
2007-08-12（万方平台首次上网日期，不代表论文的发表时间）