Abstract
Hydrogen gas was produced from the catalytic reformation of pyroligneous acid (PA)with modified bimetallic Al-SBA-15 catalysts. Al-SBA-15 catalysts with different aluminum loading contents were prepared through one-step hydrothermal synthesis. Monometallic M-Al-SBA-15 (M=Ni, Fe, Co, and Sn) and bimetallic M/N-Al-SBA-15 (M-N=Ni-Fe, Ni-Sn, and Ni-Co) catalysts were synthesized through impregnation. The catalysts were characterized via N2 adsorption-desorption, scanning electron microscopy(SEM), X-ray photoelectron spectroscopy(XRD), and X-ray photoelectron spectroscopy(XPS) analysis and so on. Bimetallic M-N-Al-SBA-15 catalysts exhibited higher catalytic activity and carbon deposition resistance than monometallic M-Al-SBA-15 catalysts. Sn facilitated the combination of Ni with Al into a NiAl2O4 spinel in the carrier. Ni/Sn-Al-SBA-15 bimetallic catalyst showed excellent catalytic activity and carbon deposition resistance. The H2 yield was 30.1mg/g and H2 content remained 40% after 16h under the optimal reaction conditions via the Ni/Sn-Al-SBA-15 catalyst.
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