Abstract
A newly designed ultrafine NiO–La 2O 3–Al 2O 3 aerogel catalyst has been successfully prepared by the combination of sol–gel method and supercritical drying (SCD) technique for CH 4/CO 2 reforming. Compared to the conventional impregnated catalyst, it exhibits unusual physical and chemical properties, as manifested in very large specific surface area, well-defined pore size distribution and good textural stability. Very high activity and at the same time very low carbon deposition were also observed. It more easily forms homogeneously distributed NiAl 2O 4 spinel in aerogel catalyst at low heat treatment temperature and has much higher capacity to adsorb CO 2, which may be mainly responsible for its excellent catalytic performance and insensitive to carbon deposition.
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