Mixed-Phase Indium Oxide as a Highly Active and Stable Catalyst for the Hydrogenation of CO2 to CH3OH,Industrial & Engineering Chemistry Research

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Mixed-Phase Indium Oxide as a Highly Active and Stable Catalyst for the Hydrogenation of CO2 to CH3OH
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-02-26 , DOI: 10.1021/acs.iecr.0c04688
Zhisheng Shi _{1,

2} , Qingqing Tan ₁ , Dongfang Wu ₁

Affiliation

Indium oxide has been demonstrated to be a suitable catalytic material for CO₂ adsorption and activation, and in this study a phase-mixing strategy is used to improve its catalytic hydrogenation of CO₂ to CH₃OH. Mixed-phase indium oxide with controllable cubic and hexagonal phases is synthesized by a solvothermal method, and its CO₂ conversion and CH₃OH space-time yield are about 2 times higher than those of single-phase indium oxide. Experimental investigation shows a significant mixed-crystal effect resulting from the phase mixing, which substantially promotes oxygen vacancy formation and medium-strength CO₂ adsorption and thereby enhances the catalytic performance. Furthermore, the mixed-phase catalyst is very stable and too difficult to reduce during reaction. These results give a good technique for the development of highly active and long-lived CO₂ hydrogenation catalysts through crystal phase engineering.

中文翻译：

混合相氧化铟作为高活性和稳定的催化剂，用于将CO ₂加氢为CH ₃ OH

氧化铟已被证明是适合CO ₂吸附和活化的催化材料，在本研究中，采用相混合策略来改善其将CO ₂催化氢化为CH ₃ OH的能力。通过溶剂热法合成了可控的立方相和六方相的混合相氧化铟，其CO ₂转化率和CH ₃ OH时空产率比单相氧化铟高约2倍。实验研究表明，由相混合产生了显着的混合晶体效应，这大大促进了氧空位的形成和中等强度的CO _2。吸附从而增强催化性能。此外，混合相催化剂非常稳定并且在反应过程中难以还原。这些结果为通过晶相工程开发高活性和长寿命的CO ₂加氢催化剂提供了一种很好的技术。

更新日期：2021-03-10

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