Highly Active Nickel Catalyst for CO2 Hydrogenation

  • Author: ChemistryViews.org
  • Published: 03 June 2019
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Chemical Science/Royal Society of Chemistry
  • Associated Societies: Royal Society of Chemistry (RSC), UK
thumbnail image: Highly Active Nickel Catalyst for CO<sub>2</sub> Hydrogenation

Carbon dioxide could be used as a renewable chemical feedstock. It can, for example, be reduced using H2 to give formic acid, dimethoxymethane, or methanol. In the preparation of formate from CO2, precious metal catalysts can achieve turn-over numbers (TONs) of up to several million. Non-precious metal catalysts, in contrast, usually only reach TONs of several thousand.


Jürgen Klankermayer and colleagues, RWTH Aachen University, Germany, have developed a nickel catalyst whose activity is comparable to precious-metal-based catalytic systems. The team used a multidentate ligand, tris(2-(diphenylphosphino)ethyl)amine), and a nickel(II) salt to prepare the catalyst (pictured). 1,8-Diazabicycloundec-7-ene (DBU) was used as a base. The reaction was performed under 30 bar CO2 pressure and a total pressure of 90 bar including H2.


At optimized reaction conditions, the catalyst achieved TONs of up to 4.65 · 106 in the homogeneous hydrogenation of CO2 to formate. The system, thus, outperforms other systems based on first-row transition metals. According to the researchers, detailed mechanistic investigations on the catalyst system are ongoing.


 

 

Article Views: 1168

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