Applied Catalysis A: General, Vol.547, 75-85, 2017
Hydrogen from pyroligneous acid via modified bimetal Al-SBA-15 catalysts
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 onestep 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 N-2 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 H-2 yield was 30.1 mg/g and H-2 content remained 40% after 16 h under the optimal reaction conditions via the Ni/Sn-Al-SBA-15 catalyst.