Selective transformation of carbon dioxide into lower olefins with a bifunctional catalyst composed of ZnGa2O4 and SAPO-34

Xiaoliang Liu; Mengheng Wang; Cheng Zhou; Wei Zhou; Kang Cheng; Jincan Kang; Qinghong Zhang; Weiping Deng; Ye Wang

doi:10.1039/c7cc08642c

Selective transformation of carbon dioxide into lower olefins with a bifunctional catalyst composed of ZnGa₂O₄ and SAPO-34

Chem Commun (Camb). 2018 Jan 7;54(2):140-143. doi: 10.1039/c7cc08642c. Epub 2017 Dec 6.

Authors

Xiaoliang Liu¹, Mengheng Wang¹, Cheng Zhou¹, Wei Zhou¹, Kang Cheng¹, Jincan Kang¹, Qinghong Zhang¹, Weiping Deng¹, Ye Wang¹

Affiliation

¹ State Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers and Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P. R. China. kangcheng@xmu.edu.cn zhangqh@xmu.edu.cn wangye@xmu.edu.cn.

PMID: 29210376
DOI: 10.1039/c7cc08642c

Abstract

A bifunctional catalyst composed of ZnGa₂O₄ with a spinel structure and molecular sieve SAPO-34 catalyses the direct conversion of CO₂ to C₂-C₄ olefins with a selectivity of 86% and a CO₂ conversion of 13% at 370 °C. The oxygen vacancies on ZnGa₂O₄ surfaces are responsible for CO₂ activation, forming a methanol intermediate, which is then converted into C₂-C₄ olefins in SAPO-34.