NieCe/Al2O3 exhibited
higher specific surface area of 169 m2/g than other two catalysts of
Ni/Ce/Al2O3 and Ce/Ni/Al2O3. Compared with g-Al2O3 support, the
pore volume and the average pore diameter of the catalysts all
decreased, which were due to the fact that some of the pores were
blocked by NiO and CeO2 nanoparticles.