二氧化碳甲烷化用镍基催化剂助剂改性研究进展

Research progress in effects of promoters on supported nickel-based CO_2 methanation catalysts

介绍了贵金属、碱土金属、稀土金属以及过渡金属助剂等对活性镍基催化剂的分散度、还原度、双金属合金协同效应、镍基催化剂结构稳定性及其对CO2甲烷化反应速率和产物选择性的影响研究进展。较系统地分析了这些助剂改性镍基催化剂的作用机制。提出了非贵金属助剂以及复合助剂将是CO2甲烷化用镍基催化剂助剂研发的发展方向。

The research progresses in the effects of noble metal, alkaline earth metal, rare earth and transition metal promoters on nickel-based catalysts in dispersion, reducibility, bimetallic synergistic effect, structural stability and the reaction rate and selectivity for CO2 methanation were introduced, and the mechanisms of the promoters modifying nickel-based catalysts were discussed. It was proposed that non-noble metal promoters and composite promoters would be the focus of future research.