Biogas upgrading to syngas by combined reforming using Ni/CeO2–Al2O3 with bimodal pore structure
نویسندگان
چکیده
Ni/CeO2–Al2O3 with bimodal porous structure and two different CeO2 concentrations (low: 5 wt% high: 15 wt%) were prepared by the refluxed co-precipitation method characterized N2 physisorption, XRD, TPR, H2-TPD, CO2-TPD. Catalysts tested in combined steam dry reforming of methane (CSDRM) at atmospheric pressure, 600°C–700 °C CH4: CO2: H2O = 1: 0.48: 0.8, order to prepare synthesis gas H2:CO ratio 2:1. The catalytic activity decreases increasing ceria content, best catalyst being Ni/CeO2(5 wt%)-Al2O3. good obtained for wt%)-Al2O3 is a consequence more intimate contact alumina, providing higher metal-support interaction, but also dimensions larger pores which contribute better targeting reagents sites. In used catalysts, presence preserved decreased carbon deposition ∼70%.
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ژورنال
عنوان ژورنال: Microporous and Mesoporous Materials
سال: 2022
ISSN: ['1873-3093', '1387-1811']
DOI: https://doi.org/10.1016/j.micromeso.2022.112082