Applications of Al<sub>2</sub>O<sub>3</sub>‐Based Nano‐Catalysts in Thermocatalytic CO<sub>2</sub> Transformations: Impacts of Surface Acidity and Basicity
Shuxian Qiu, Yingxin Wu, Yongxian Tan, Qiuping Dai, Xingyuan Gao, Sibudjing Kawi
Abstract
Abstract Adsorption and activation of CO 2 exert a profound impact on the catalytic conversion and stability in thermocatalytic CO 2 transformations. To optimize the surface property of Al 2 O 3 ‐based nano‐catalysts, various modifications focusing on the surface acidity and basicity have been applied and proven effective in promoting the CO 2 adsorption and activation, thus enhancing the catalytic performances. In this Review, the beneficial effects of a series of modifications strategies (e. g., promoters and synthesis/treatment methods) on adjusting the surface acidity and basicity of Al 2 O 3 ‐based nano‐catalysts were comprehensively summarized, covering nearly all types of thermocatalytic CO 2 transformations (e. g., reforming and hydrogenation). Moreover, the structure‐performance relationships were discussed in depth by relating to the adsorption, activation and conversion of CO 2 , selectivity of targeted products as well as the coke resistance and lifespan of catalysts.