From Carbon Dioxide to Ethanol

  • Author: Li Grundl
  • Published: 05 June 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
thumbnail image: From Carbon Dioxide to Ethanol

Ethanol is an important industrial intermediate and a renewable fuel additive. The synthesis of ethanol via the hydrogenation of CO2 is an effective way to eliminate and use the environmentally harmful gas. However, the practical application of this method is hindered by unsatisfying selectivities and yields.


Xiaoqing Huang, Soochow University, Jiangsu, China, and colleagues have found that highly ordered, active, and stable Pd–Cu nanoparticles (NPs) can effectively catalyze CO2 hydrogenation to produce ethanol. The Pd–Cu NPs were synthesized by heating a mixture of Pd(acac)2, Cu(acac)2, FeCl3, ascorbic acid, and oleylamine (acac = acetylacetonate) at 160 to 180 oC. The hydrogenation reaction was performed in an autoclave pressurized with 0.8 MPa CO2 and 2.4 MPa H2 at 200 oC.


The team also synthesized supported catalysts because supports such as metal oxides can provide new heterogeneous sites, change electronic properties, etc. The best catalyst in the study was composed of Pd2Cu NPs on titanium oxide, giving an excellent ethanol selectivity of 92 % and the highest turnover frequency of 359 h–1. According to the team, the charge transfer between Pd and Cu in the NPs enhances the reducibility of surface oxide, which provides catalytically active metallic state atoms.


 

Article Views: 2688

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


CONNECT:

ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter


A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH