Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Made out of Thin Air

04.10.2012
Fixation of CO2 through iridium catalyzed hydrosilylation

Carbon dioxide could be a useful alternative source of carbon for the chemical industry. It is inexpensive, is supplied in abundance by nature, and would help to reduce the consumption of fossil fuels.

In addition, it would significantly improve the carbon footprint of fuels and chemical products. The largest barrier to this process is the high stability of the carbon dioxide molecule. In the journal Angewandte Chemie, Spanish researchers have now introduced a new process that traps carbon dioxide in the form of silyl formates, which are silicon-containing formic acid esters.

The hydrogenation of CO2 to formic acid (HCO2H) is an area of CO2 extraction that is being intensively researched. In the chemical industry, formic acid is used as a starting material for many products, with applications including agriculture, food technology, and the leather goods industry. Most interestingly, it could be used as a hydrogen-storage medium for fuel-cell-driven vehicles.

Although a number of catalytic processes for the production of formic acid from CO2 have been developed, none of them have been implemented industrially. The reaction is an equilibrium that significantly favors the reactants. In order to hinder the constantly running reverse reaction, the formic acid must be trapped—in the form of salts, adducts, or derivatives—in order to remove it from the equilibrium.

A team led by Francisco J. Fernández-Alvarez and Luis A. Oro at the University of Zaragoza has now developed a new catalyst that allows carbon dioxide to be converted and trapped as a silyl formate. These compounds can be used for the production of silicone polymers and as reactive intermediates in organic syntheses. It is also easily possible to release formic acid from the silyl formate.

The new reaction, which the researchers have been able to carry out on a gram scale, occurs under very mild reaction conditions. It is highly selective and delivers a high turnover, works without a solvent and produces no waste products. The carbon dioxide is reduced by heptamethyltrisiloxane. At the heart of the reaction lies a specially developed iridium catalyst that is formed in situ from an air- and water-stable precursor.

About the Author
Dr Luis A. Oro is Professor of Inorganic Chemistry at Zaragoza University, Spain. His main research interests are in organometallic chemistry and homogeneous catalysis with a special interest in reaction mechanisms. He is also the Director of the Homogeneous Catalysis Institute.

Author: Luis A. Oro, Universidad de Zaragoza (Spain), http://sorores.unizar.es/personales/LAO/oro.html

Title: Effective Fixation of CO2 by Iridium-Catalyzed Hydrosilylation
Angewandte Chemie International Edition, Permalink to the article: http://dx.doi.org/10.1002/anie.201206165

Angewandte Chemie | Angewandte Chemie
Further information:
http://pressroom.angewandte.org

More articles from Life Sciences:

nachricht How molecules teeter in a laser field
18.01.2019 | Forschungsverbund Berlin

nachricht Discovery of enhanced bone growth could lead to new treatments for osteoporosis
18.01.2019 | University of California - Los Angeles

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Ten-year anniversary of the Neumayer Station III

The scientific and political community alike stress the importance of German Antarctic research

Joint Press Release from the BMBF and AWI

The Antarctic is a frigid continent south of the Antarctic Circle, where researchers are the only inhabitants. Despite the hostile conditions, here the Alfred...

Im Focus: Ultra ultrasound to transform new tech

World first experiments on sensor that may revolutionise everything from medical devices to unmanned vehicles

The new sensor - capable of detecting vibrations of living cells - may revolutionise everything from medical devices to unmanned vehicles.

Im Focus: Flying Optical Cats for Quantum Communication

Dead and alive at the same time? Researchers at the Max Planck Institute of Quantum Optics have implemented Erwin Schrödinger’s paradoxical gedanken experiment employing an entangled atom-light state.

In 1935 Erwin Schrödinger formulated a thought experiment designed to capture the paradoxical nature of quantum physics. The crucial element of this gedanken...

Im Focus: Nanocellulose for novel implants: Ears from the 3D-printer

Cellulose obtained from wood has amazing material properties. Empa researchers are now equipping the biodegradable material with additional functionalities to produce implants for cartilage diseases using 3D printing.

It all starts with an ear. Empa researcher Michael Hausmann removes the object shaped like a human ear from the 3D printer and explains:

Im Focus: Elucidating the Atomic Mechanism of Superlubricity

The phenomenon of so-called superlubricity is known, but so far the explanation at the atomic level has been missing: for example, how does extremely low friction occur in bearings? Researchers from the Fraunhofer Institutes IWM and IWS jointly deciphered a universal mechanism of superlubricity for certain diamond-like carbon layers in combination with organic lubricants. Based on this knowledge, it is now possible to formulate design rules for supra lubricating layer-lubricant combinations. The results are presented in an article in Nature Communications, volume 10.

One of the most important prerequisites for sustainable and environmentally friendly mobility is minimizing friction. Research and industry have been dedicated...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Our digital society in 2040

16.01.2019 | Event News

11th International Symposium: “Advanced Battery Power – Kraftwerk Batterie” Aachen, 3-4 April 2019

14.01.2019 | Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

 
Latest News

Additive manufacturing reflects fundamental metallurgical principles to create materials

18.01.2019 | Materials Sciences

How molecules teeter in a laser field

18.01.2019 | Life Sciences

The cytoskeleton of neurons has been found to be involved in Alzheimer's disease

18.01.2019 | Health and Medicine

VideoLinks
Science & Research
Overview of more VideoLinks >>>