Highest Activity for CO2 Hydrogenation

  • ChemPubSoc Europe Logo
  • Author: ChemViews
  • Published Date: 14 December 2011
  • Source / Publisher: Chemistry - A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Highest Activity for CO<sub>2</sub> Hydrogenation

Related Societies

The catalytic hydrogenation of CO2 or bicarbonates to give formic acid derivatives provides the basis for a renewable chemical feedstock. It has the potential to replace the use of the more toxic CO, which is currently utilized in industry on a million-ton scale. Noble-metal complexes have mainly been studied as catalysts for this transformation with good results. Cheaper, non-precious-metal catalysts have scarcely been investigated and the obtained catalytic activities are low with turnover numbers (TONs) <120.


Matthias Beller and co-workers, Rostock University, Germany, report cobalt dihydrogen complexes based on the tetraphos ligand (P(CH2CH2PPh2)3) for the catalytic hydrogenation of CO2 and bicarbonates. Hydrogenation of CO2 in methanol proceeded smoothly in 83 % yield with a TON of 659. The hydrogenation of CO2 was also possible at low pressures with TONs of around 60. Previously reported TONs at low H2 pressure are in the range of 9–16. For the hydrogenation of bicarbonates, a TON of 3877 was achieved. This is six times as high as the best non-precious-metal catalyst, and twice that of the best precious-metal system.

This represents a good starting point for further improvement of the hydrogenation reaction under ambient conditions and with low-cost metals.

Image: © Wiley-VCH


Article Views: 3167

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)published by Wiley-VCH