Ni _ CeO2催化剂具有高CO2甲烷化活性和低温下高CH4选择性.pdfVIP

i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 7 ( 2 0 1 2 ) 5 5 2 7 e5 5 3 1 Available online at journal homepage: /locate/he Technical Communication Ni/CeO2 catalysts with high CO2 methanation activity and high CH4 selectivity at low temperatures Shohei Tada a, Teruyuki Shimizu a, Hiromichi Kameyama b, Takahide Haneda b, Ryuji Kikuchi a,* a Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan b Tokyo Gas Co., Ltd., 1-7-7, Suehiro-cho, Tsurumi-ku, Yokohama-shi, Kanagawa 230-0045, Japan a r t i c l e i n f o a b s t r a c t Article history: CO methanation was performed over 10 wt%Ni/CeO , 10 wt%Ni/a-Al O , 10 wt%Ni/TiO , 2 2 2 3 2 Received 31 October 2011 and 10 wt%Ni/MgO, and the effect of support materials on CO2 conversion and CH4 Received in revised form selectivity was examined. Catalysts were prepared by a wet impregnation method, and 15 December 2011 characterized by BET, XRD, H -TPR and CO -TPD. Ni/CeO showed high CO conversion 2 2 2 2 Accepted 19 December 2011 especially at low temperatures compared to Ni/a-Al O , and the selectivity to CH was very 2 3 4 Available online 17 J