Navigation Links
Mysterious catalyst explained
Date:4/30/2013

From methanol to formaldehyde - this reaction is the starting point for the synthesis of many everyday plastics. Using catalysts made of gold particles, formaldehyde could be produced without the environmentally hazardous waste generated in conventional methods. Just how the mysterious gold catalyst works has been found out by theoretical and experimental researchers at the Ruhr-Universitt Bochum in a cooperation project. In the international edition of the journal "Angewandte Chemie" they report in detail on what happens on the gold surface during the chemical reaction.

"Gold should not really be suitable as a catalyst."

"That nanoparticles of gold actually selectively transform methanol into formaldehyde is remarkable", says Prof. Dr. Martin Muhler of the Laboratory of Industrial Chemistry at the RUB. "As a stable precious metal, gold should not really be suitable as a catalyst." However, gold particles of a few nanometres in size, anchored to a titanium dioxide surface, fulfil their purpose. You only need oxygen to set the reaction in motion, and the only waste product is water. How this is achieved is examined by Muhler's team together with the groups of Prof. Dr. Dominik Marx of the Chair of Theoretical Chemistry and Dr. Yuemin Wang of the Department of Physical Chemistry I.

Oxygen binds at the interface between gold and titanium dioxide

The chemists identified the active site of the catalyst, i.e. the point at which the oxygen and methanol bind and are converted to water and formaldehyde. Elaborate calculations by Dr. Matteo Farnesi Camellone showed that oxygen binds at the interface between titanium dioxide and gold particles. Since titanium dioxide is a semiconductor, and thus electrically conductive, a charge exchange between oxygen, gold particles and titanium dioxide is possible here. Oxygen vacancies in the titanium dioxide further favour this charge transfer. Electrons transitionally transfer from
'/>"/>

Contact: Dominik Marx
dominik.marx@theochem.rub.de
49-234-322-8083
Ruhr-University Bochum
Source:Eurekalert

Page: 1 2

Related biology news :

1. Astronomer gets grant to better measure mysterious black holes
2. The mysterious GRIN3A and the cause of schizophrenia
3. Researchers id queens, mysterious disease syndrome as key factors in bee colony deaths
4. Synchrotron infrared unveils a mysterious microbial community
5. Nunavuts mysterious ancient life could return by 2100
6. Mysterious snake disease decoded
7. Gene discovery set to help with mysterious paralysis of childhood
8. Life cycles of mysterious Namibian grassland fairy circles characterized
9. DNA catalysts do the work of protein enzymes
10. Catalysts that produce green fuel
11. Painting with catalysts: Nano-engineered materials for detoxifying water by use of sunlight
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... methods and applications for imaging and manipulation of the ... were the inspiration behind Neurophotonics , a new ... optics and photonics. , The first issue coincides with ... States, and a special section features articles that lay ... impact that optics and photonics will have on advancing ...
(Date:7/29/2014)... , July 29, 2014 Research and ... SaaS-based Business Intelligence (BI) Market 2014-2018" report to ... The term BI refers to applications ... to, or analyzing information about a company,s operations. BI ... affecting their business; for example, metrics on sales, production, ...
(Date:7/29/2014)... UK overseas territory of Ascension Island, one of the ... a renaissance. , Writing in the journal Biodiversity ... and Ascension Island Government Conservation Department report that the ... Atlantic outpost has increased by more than 500 per ... as 24,000 nests are now estimated to be laid ...
Breaking Biology News(10 mins):SPIE launches Neurophotonics journal with special section on BRAIN Initiative 2SPIE launches Neurophotonics journal with special section on BRAIN Initiative 3Global SaaS-based Business Intelligence (BI) Market 2014-2018 2Major turtle nesting beaches protected in 1 of the UK's far flung overseas territories 2
... results from an ambitious voyage led by a group of ... Diego offer a stark view of human pollution and its ... labeled as the "Great Pacific Garbage Patch." Two graduate ... SEAPLEX, found evidence of plastic waste in more than nine ...
... researchers have produced a map of Edmonton predicting the most ... can be fatal for drivers and their passengers. The hot ... the city limit, border line. Mark Boyce is a ... Boyce found that the most dangerous rural roadways share three ...
... are incredibly complex others manage without. Researchers at the ... their entire body despite having no eyes at all. The ... of the National Academy of Sciences (PNAS). Most ... way of seeing complex images so that they can function ...
Cached Biology News:Scripps study finds plastic in 9 percent of 'garbage patch' fishes 2Scripps study finds plastic in 9 percent of 'garbage patch' fishes 3Researchers predict locations for deer vs. car collisions 2
(Date:7/29/2014)... be separated from its properties? On July 29, the ... of the first Cheshire Cat experiment, separating a neutron ... Orange, CA, and Vienna University of Technology. , Chesire ... thought Alice in Wonderland, "but a grin without a ... in my life!" Alice,s surprise stems from her experience ...
(Date:7/29/2014)... new way of manufacturing microstructured surfaces that have ... of carbon nanotubes, could exhibit a variety of ... strength, or the ability to repel water in ... mechanical forces can be used to direct nanostructures ... can independently control the mechanical properties of ...
(Date:7/29/2014)... 2014  Pomerantz LLP is investigating claims on behalf ... "Company") (NASDAQ: IPXL).  Such investors are advised to contact ... or 888-476-6529, ext. 237. The investigation concerns ... have violated Sections 10(b) and 20(a) of the Securities ... 29, 2014, Impax Laboratories, Inc. (the "Company") issued a ...
(Date:7/29/2014)... 29, 2014 According to the ... Imaging), Analytics (Image Analysis Software), Delivery Modes (Web Based/Cloud ... & Trends to 2018", published by MarketsandMarkets, analyzes and ... such as North America , ... and the Rest of the World (RoW). ...
Breaking Biology Technology:The quantum Cheshire cat: Scientists separate a particle from its properties 2The quantum Cheshire cat: Scientists separate a particle from its properties 3The quantum Cheshire cat: Scientists separate a particle from its properties 4A new way to make microstructured surfaces 2SHAREHOLDER ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Impax Laboratories, Inc. - IPXL 2Digital Pathology Market worth $437 Million by 2018 2Digital Pathology Market worth $437 Million by 2018 3
... 4, 2012  23andMe, a leader in personal genetics, has ... are the 10 most interesting and significant genetic findings ... understand the role of genetics in personal health and ... ) "The genetics revolution is well underway ...
... 2012 Luminex Corporation (NASDAQ: LMNX) today announced that ... Healthcare Conference to be held January 9 -12, 2012, ... ) The investor presentation by Patrick J. ... 1:30 p.m. Pacific time (4:30 p.m. Eastern time) on Wednesday, ...
... Jan. 4, 2012  Telik, Inc. (Nasdaq: TELK) today announced ... corporate update at the 5th Annual OneMedForum Conference on ... p.m. Eastern time) in San Francisco.  A live and ... the Telik website, www.telik.com .  The archived broadcast ...
Cached Biology Technology:23andMe Presents Top Ten Most Interesting Genetic Findings of 2011 223andMe Presents Top Ten Most Interesting Genetic Findings of 2011 323andMe Presents Top Ten Most Interesting Genetic Findings of 2011 423andMe Presents Top Ten Most Interesting Genetic Findings of 2011 523andMe Presents Top Ten Most Interesting Genetic Findings of 2011 623andMe Presents Top Ten Most Interesting Genetic Findings of 2011 7Luminex Corporation to Present at JP Morgan Healthcare Conference 2
...
... Acid) Clear to very pale yellow ... 2 O 2 in a citrate buffer ... is soluble, safe, convenient and has good overall ... blue-green color that can be measured at 405 ...
...
...
Biology Products: