Abstract
The steam reforming of bio-oil-derived acetic acid over the developed Ni/CeO(2)-ZnO nanoparticle catalysts for hydrogen production was studied. The correlations of CeO(2) to ZnO mass ratio (CZMR) and nickel loading with the properties and performances of Ni/CeO(2)-ZnO catalysts were explored. The H(2), CO, and potential H(2) yields followed a Gaussian normal distribution with increasing the CZMR. An exponential function equation was established to correlate the H(2), CO, and potential H(2) yields with Ni loading. As the CZMR increased from 0 to 1/3, the H(2) yield increased from 57.8 to 69.4%, with a growth rate of 20.1%. Further, on increasing the CZMR from 1/3 to 3, the H(2) yield decreased by 37.6%. The CO yield showed a similar trend for the H(2) yield on increasing the CZMR, which first increased to a peak value, then started to decrease rapidly and finally stabilized. The yield of H(2) increased significantly from 20.6 to 73.5%, with the increase of nickel loading from 0 to 15%. Further, on increasing the nickel loading from 15 to 25%, the H(2) yield increased by only 5.8%. With the CZMR of 1/3 and the nickel loading of 15%, the selectivities of H(2) and CO were as high as 91.6 and 42.3%, respectively.