Abstract
Abstract A sol–gel method was employed to prepare Ni/CaO, Ni/Sm 2 O 3 and a series of Ni/Sm 2 O 3 –CaO catalysts dispersed uniformly. The catalytic performance in CO 2 /CH 4 reforming and the physicochemical properties were investigated by means of GC, BET, XRD, TG/DTA and HRTEM techniques, respectively. Under the condition of an atmospheric pressure at 700 °C and a GHSV of 4.8 × 10 4 ml/h/g cat , the conversion of CH 4 and CO 2 over 10% Ni/Sm 2 O 3 –CaO (1:4) catalyst were 60% and 63%, respectively, the selectivity of H 2 and CO were 85% and 95%, significantly higher than those over Ni/CaO and Ni/Sm 2 O 3 due to high dispersion of Ni nanometer particles and interfacial effect of support in 10% Ni/Sm 2 O 3 –CaO.
Published Version
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