Enhanced CH 4 Production from Corn-Stalk Pyrolysis Using Ni-5CeO 2 /MCM-41 as a Catalyst

Fang Huang, Weizun Li, Qidong Hou and Meiting Ju
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Fang Huang: Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
Weizun Li: Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
Qidong Hou: Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
Meiting Ju: Tianjin Engineering Research Center of Biomass Solid Waste Resources Technology, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China

Energies, 2019, vol. 12, issue 5, 1-12

Abstract: Production of syngas from lignocellulosic biomass though pyrolysis is a promising solution for the large-scale utilization of biomass. However, current pyrolysis approaches suffer from the relative low product yield and selectivity, limiting their practical application. To solve this problem, a series of nickel-based catalysts including Ni/MCM-41, Ni-5CeO 2 /MCM-41, and Ni-5La 2 O 3 /MCM-41 were prepared and characterized by transmission electron microscopy (TEM), N 2 adsorption–desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and H 2 -temperature-programmed reaction (TPR) analysis. It was observed that the simultaneous addition of Ni and CeO 2 to MCM-41 could increase the reducibility of Ni and the number of active Ni 0 sites on the surface of the catalyst. Consequently, Ni-5CeO 2 /MCM-41 gave a CH 4 yield of 14.6 mmol/g, which is remarkably higher than that (10.5 mmol/g) obtained in the absence of the catalyst. Meanwhile, the CO and H 2 yields increased slightly, while the CO 2 yield decreased slightly. Therefore, the improved CH 4 yield and selectivity was mainly due to the increased decomposition of tarry compounds catalyzed by Ni/MCM-41 with the assistance of CeO 2 .

Keywords: corn stalk; pyrolysis; methane; Ni-5CeO 2 /MCM-41 (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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