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- Title
Syngas Production from Biogas Reforming: Role of the Support in Nickel-based Catalyst Performance.
- Authors
Pham, Cham Q.; Nguyen, Van-Phuoc; Van, Thuan Tran; Phuong, Pham T.T.; Pham, Phuong T.H.; Trinh, Thanh H.; Nguyen, Tung M.
- Abstract
Syngas, a mixture of carbon monoxide and hydrogen, is widely used in electricity, synthetic chemicals, and fuels productions. Syngas can be obtained from a chemical reaction between methane and carbon dioxide that are commonly found in biogas. In this study, a simulated mixture of biogas containing CH4:CO2 = 1:1 (mol/mol) was used as the feedstock. Different nickel-based catalysts supported on TiO2, MgO, KIT-6, and Al2O3 have been prepared through the dry impregnation method with a fixed Ni dosage of 10 wt%. All samples were characterized by modern techniques including XRD, BET, H2-TPR, CO2-TPD, TPO, and TEM. It was found that the metal-support interaction played a critical role in metal dispersibility and reducibility of catalyst precursors. During the methane dry reforming, catalyst basicity is a crucial factor facilitating the adsorption and activation of carbon dioxide. The highest activity was achieved over 10Ni/Al2O3 with the methane conversion of 73.2% and carbon dioxide conversion of 86.9%. Furthermore, the effects of support properties on the catalyst stability were studied. Nature of support especially basicity plays an important role on the deposition of carbon over the active sites. The Ni/Al2O3 with good nickel dispersibility, affordable metal-support interaction, reasonable basicity was reported the most stable without any significant deactivation after 6 h reaction. Finally, the catalyst design strategy for the DRM was proposed.
- Subjects
CATALYST supports; BIOGAS; STEAM reforming; METHANATION; BIOGAS production; CARBON dioxide adsorption; SYNTHESIS gas; CARBON monoxide
- Publication
Topics in Catalysis, 2023, Vol 66, Issue 1-4, p262
- ISSN
1022-5528
- Publication type
Article
- DOI
10.1007/s11244-022-01750-y