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:7/21/2015)... July 21, 2015  NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce ... announces that it has filed provisional patent 62/192218 ... This invention highlights next generation ... an account, but also the user using unique ...
(Date:7/20/2015)... -- Acuity Market Intelligence,s latest research "The Global Biometrics ... Privacy" forecasts that between 2014 and 2020 nearly ... to smart mobile devices by 2.2 billion mobile ... to generate more than $67.9 billion in total ...    "Biometrics is at the center ...
(Date:7/13/2015)... , Jul. 13, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... provisional patent 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION ... new convenient and secure method to make payments.  ... payment methods, introduced with its groundbreaking voice-direct payment ...
Breaking Biology News(10 mins):NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4
... Baltimore, MD The human genome shares several peculiarities with the ... Our genetic blueprint contains numerous entities known as transposons, or ... to place on the chromosomes within a cell. ... transposon elements and the decaying remains of former transposons that ...
... meeting of the American Fisheries Society will take place in ... conference is "New Frontiers in Fisheries Management and Ecology: Leading ... http://afs2011.org/ All talks will be at the ... Eat but don,t get eaten: after restoration, young salmon better ...
... discovery by the University of Colorado Boulder and the ... "power plants" within cells known as mitochondria has implications ... and conditions due to mitochondrial defects. Led by ... collaboration with the UC-Davis team led by Professor Jodi ...
Cached Biology News:A 'jumping gene's' preferred targets may influence genome evolution 2A 'jumping gene's' preferred targets may influence genome evolution 3USGS research frontiers on fish at the American Fisheries Society Conference 2USGS research frontiers on fish at the American Fisheries Society Conference 3USGS research frontiers on fish at the American Fisheries Society Conference 4USGS research frontiers on fish at the American Fisheries Society Conference 5USGS research frontiers on fish at the American Fisheries Society Conference 6USGS research frontiers on fish at the American Fisheries Society Conference 7New cellular surprise may help scientists better understand human mitochondrial diseases 2
(Date:7/31/2015)... ... July 31, 2015 , ... R-Biopharm is proud ... partially hydrolyzed gluten in foods, has been accepted by AOAC International as Official ... Gluten in Fermented Cereal-Based Products by R5 Competitive ELISA,” based on a specific ...
(Date:7/30/2015)... CAMBRIDGE, Mass. , July 30, 2015 /PRNewswire/ ... software solutions for the interpretation and analysis of ... Matthew Fischer has joined the company ... Photo - http://photos.prnewswire.com/prnh/20150730/250931 ... astounding capabilities to integrate, interpret, analyze and explore ...
(Date:7/30/2015)... , July 30, 2015 ... by Product (Software, Molecular Modeling, PB/PK, PKPD, Trial Design, ... & Development, Preclinical, Clinical Trial), by End Users - ... Market is expected to reach USD 2,107.99 million by ... CAGR of 15.29%. Browse more than ...
(Date:7/30/2015)... 2015   Senomyx , Inc. (NASDAQ: SNMX ... to discover, develop, and commercialize novel flavor ingredients for ... financial results for the second quarter 2015. ... remain on track to achieve our commercial and financial ... of the Company. "Since our last quarterly earnings report, ...
Breaking Biology Technology:RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2GenoSpace Introduces Matthew Fischer as Vice President of Sales and Marketing 2Biosimulation Market Worth 2,107.99 Million USD by 2020 2Biosimulation Market Worth 2,107.99 Million USD by 2020 3Biosimulation Market Worth 2,107.99 Million USD by 2020 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9
... assay effectively identifies melanoma, LA JOLLA, Calif., ... diagnostics for the early detection of,melanoma and other ... Cancer Research on its non-invasive assay that distinguishes ... Genomic Assay for,the Detection of Melanoma in Suspicious ...
... CEDAR KNOLLS, N.J., April 15 Emisphere,Technologies, Inc. ... will host its,Annual Stockholders Meeting on Thursday, May ... Two Whippany Road, Morristown, New Jersey. The,meeting will ... TECHNOLOGIES, INC., Emisphere Technologies, Inc. is a ...
... -ARIUS report new data and program updates on cancer stem cell ... ... April 15 /PRNewswire-FirstCall/ - ARIUS Research Inc., (TSX:,ARI), a biotechnology company ... it will be presenting new,findings and program updates related to its ...
Cached Biology Technology:DermTech Study on Melanoma Molecular Diagnostic to Be Presented at AACR 2Emisphere Technologies To Hold Annual Stockholders Meeting on May 8, 2008 2ARIUS presents new findings for anti-cancer antibody programs at AACR 2ARIUS presents new findings for anti-cancer antibody programs at AACR 3ARIUS presents new findings for anti-cancer antibody programs at AACR 4ARIUS presents new findings for anti-cancer antibody programs at AACR 5
Request Info...
... CultureWell cell culture systems provide ... cultured cells for staining and ... silicone gaskets preassembled with standard ... plates. The entire system is ...
... The Captivate magnetic separator ... be used in conjunction with ... C-21474, C-21476) or other magnetic ... most 96-well microplates. Cell Biology ...
ANTI L-DOPA...
Biology Products: