Highly Active and Selective Hydrogenation of CO2 to Ethanol by Ordered Pd-Cu Nanoparticles

Shuxing Bai; Qi Shao; Pengtang Wang; Qiguang Dai; Xingyi Wang; Xiaoqing Huang

doi:10.1021/jacs.7b03101

Highly Active and Selective Hydrogenation of CO₂ to Ethanol by Ordered Pd-Cu Nanoparticles

J Am Chem Soc. 2017 May 24;139(20):6827-6830. doi: 10.1021/jacs.7b03101. Epub 2017 May 15.

Authors

Shuxing Bai¹, Qi Shao¹, Pengtang Wang¹, Qiguang Dai², Xingyi Wang², Xiaoqing Huang¹

Affiliations

¹ College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Jiangsu 215123, China.
² Research Institute of Industrial Catalysis, School of Chemistry & Molecular Engineering, East China University of Science & Technology , Shanghai 200237, China.

PMID: 28485583
DOI: 10.1021/jacs.7b03101

Abstract

Carbon dioxide (CO₂) hydrogenation to ethanol (C₂H₅OH) is considered a promising way for CO₂ conversion and utilization, whereas desirable conversion efficiency remains a challenge. Herein, highly active, selective and stable CO₂ hydrogenation to C₂H₅OH was enabled by highly ordered Pd-Cu nanoparticles (NPs). By tuning the composition of the Pd-Cu NPs and catalyst supports, the efficiency of CO₂ hydrogenation to C₂H₅OH was well optimized with Pd₂Cu NPs/P25 exhibiting high selectivity to C₂H₅OH of up to 92.0% and the highest turnover frequency of 359.0 h^-1. Diffuse reflectance infrared Fourier transform spectroscopy results revealed the high C₂H₅OH production and selectivity of Pd₂Cu NPs/P25 can be ascribed to boosting *CO (adsorption CO) hydrogenation to *HCO, the rate-determining step for the CO₂ hydrogenation to C₂H₅OH.

Publication types

Research Support, Non-U.S. Gov't