Reduced Siderite Ore Combined with Magnesium Oxide as Support Material for Ni-Based Catalysts; An Experimental Study on CO2 Methanation

催化作用 甲烷化 甲烷 选择性 菱铁矿 材料科学 无机化学 化学工程 双功能 化学 冶金 碳酸盐 有机化学 工程类
作者
Kamonrat Suksumrit,Christoph Hauzenberger,Srett Santitharangkun,Susanne Lux
出处
期刊:Catalysts [Multidisciplinary Digital Publishing Institute]
卷期号:14 (3): 206-206 被引量:1
标识
DOI:10.3390/catal14030206
摘要

Ni-based catalysts play a fundamental role in catalytic CO2 methanation. In this study, the possibility of using siderite ore as a catalyst or catalytic support material for nickel-based catalysts was investigated, aiming at the exploitation of an abundant natural resource. The catalytic performance of Ni-based catalysts with reduced siderite ore as a support was evaluated and compared to MgO as a support material. MgO is known as an effective support material, as it provides access to bifunctional catalysts because of its basicity and high CO2 adsorption capacity. It was shown that undoped and Ni-doped reduced siderite ore have comparable catalytic activity for CO2 hydrogenation (20−23%) at 648 K, but show limited selectivity toward methane (<20% for sideritereduced and 60.2% for Ni/sideritereduced). When MgO was added to the support material (Ni/sideritereduced/MgO), both the CO2 conversion and the selectivity toward methane increased significantly. CO2 conversions were close to the thermodynamic equilibrium, and methane selectivities of ≥99% were achieved.
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