Navigation Links
Halting methane squanderlust
Date:5/21/2008

now that the zeolite anchors molybdenum oxide in place so methane and molybdenum oxide can react chemically, either on or in the zeolite channels. But no one could tell which comprised the reactive form: a small nugget of one or two molecules, or a larger cluster of many molybdenum oxide molecules.

"This uncertainty has led to a controversy in the scientific literature about the active phase and reaction mechanism of methane activation on these promising catalyst materials," said DICP's Bao.

Enter the world's largest NMR, uniquely capable of addressing this issue. The technological problem lay in the molybdenum oxide itself. To study this particular oxide with NMR, the chemists needed to pick up the signal from one variant of molybdenum, 95Mo; the ultra-high field of the NMR, housed at the DOE's Environmental Molecular Sciences Laboratory on the PNNL campus, allowed them to do so.

"The higher magnetic field improves the signal to noise," said Peden. "And its large sample volume allowed us to put enough catalyst into the spectrometer to overcome the poor sensitivity of 95Mo NMR."

The researchers painstakingly prepared catalysts with increasing concentrations of molybdenum in the zeolite scaffold and focused the 900 MHz NMR on the samples. The data revealed two different forms of the catalyst, as expected. One form contained the smaller nugget and the other form comprised the much larger clusters. When the concentration of molybdenum rose, more of these large clusters formed.

Then the team added methane and measured how much got converted into benzene by the catalysts. They found that when more smaller nuggets were present, more benzene was made, indicating the variety of one or two molybdenum oxide molecules was the reactive one.

Now, said Peden, the challenge is to design and produce the active form of the catalyst that could be used for large-scale benzene production, research that Bao and his group are alrea
'/>"/>

Contact: Mary Beckman
mary.beckman@pnl.gov
509-375-3688
DOE/Pacific Northwest National Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Profound immune system discovery opens door to halting destruction of lupus
2. Deep sea methane scavengers captured
3. Paired microbes eliminate methane using sulfur pathway
4. Scientists find good news about methane bubbling up from the ocean floor
5. Methane from microbes: a fuel for the future
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... that devastate honeybees in Europe, Asia and the United ... appear to be impacting native honeybee populations at this ... invasive pests include including Nosema microsporidia and ... to be resilient to these invasive pests, which suggests ... in Europe, Asia and the United States currently are ...
(Date:4/17/2014)... France have hit on a novel method to ... correct and most effective treatment possible., Kidney stones ... and developing world. If left untreated, apart from ... failure and other complications. In many patients treated ... a more effective pathological approach to diagnosis and ...
(Date:4/17/2014)... IPCC meeting painted a stark warning on the possible ... a greenhouse effect 32 times that of carbon dioxide. ... humic substances act as fully regenerable electron acceptors which ... in wetlands instead of being released to the atmosphere. ... disrupted it may enter into a vicious cycle to ...
Breaking Biology News(10 mins):East African honeybees are safe from invasive pests… for now 2East African honeybees are safe from invasive pests… for now 3Methane climate change risk suggested by proof of redox cycling of humic substances 2
... Researchers from the University of Georgia College of ... that could open new avenues for treating Ichthyophthirius ... that commonly attacks freshwater fish. With the ... harbors two apparently symbiotic intracellular bacteria: Bacteroides, ...
... turns out that wearing a cap is good for you, ... from the Johns Hopkins Engineering in Oncology Center have shown ... holds the cell,s nucleus, its genetic storehouse, in its proper ... the researchers say, could provide clues to the diagnosis and ...
... Calif., Dec. 2 DigitalPersona, Inc., a leader in ... with IBM to deploy a new model of its ... systems. The DigitalPersona U.are.U® 4500HD offering allows point-of-sale applications ... specific transactions can be linked to the individuals who ...
Cached Biology News:UGA researchers lead team in discovery involving devastating freshwater fish parasite, 'Ich' 2UGA researchers lead team in discovery involving devastating freshwater fish parasite, 'Ich' 3A cell's 'cap' of bundled fibers could yield clues to disease 2DigitalPersona Fingerprint Sensor Technology Ships on IBM SurePOS 500 Retail Systems 2
(Date:1/15/2014)... Jan. 15, 2014   Niagara Thermal Products is ... Buffalo BioBlower Technologies LLC ("B3") as the critical thermal ... award from the Army Corps of Engineers.  B3 has ... all biological contaminants and destroys VOCs and other chemical ...
(Date:1/15/2014)... (PRWEB) January 15, 2014 Cynvenio, a ... management through the genomic analysis of tumor cells in ... Finder™, a web-based cancer decision support application powered by ... with Cynvenio’s ClearID™ genomic test, Therapy Finder will provide ...
(Date:1/15/2014)... RedBrick Health , a fast-growing leader in consumer health ... EmblemHealth , the New York -based ... RedBrick Compass health assessment, combined with the RedBrick Journeys ... EmblemHealth is among the first health plans in the ...
(Date:1/15/2014)... 15, 2014 A study has been launched ... Formula 1 track could help to tackle the problem of ... Stowhealth (a GP surgery based in Stowmarket) and academics at ... Telemetry technology, which is inspired by equipment used ...
Breaking Biology Technology:Niagara Thermal Products LLC Selected as Critical Supplier for Buffalo BioBlower Air Purification Systems 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 2Cynvenio Offers New Breast Cancer Therapy Finder Application for its ClearID Breast Cancer Genomic Test 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 2Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 3Formula 1 Technology Tackles Obesity in Unique Healthcare Partnership 4
... As open ... at leading industry events. , ... Washington, DC (PRWEB) June 11, 2010 -- Open source software will be a featured topic ... Meeting is the premier event for professionals involved in the discovery, development, and life ...
... 11 PRA International, a leading Clinical Research Organization, is exhibiting ... 15th congress in Barcelona 10-13 June 2010 . , ... At PRA,s booth (#202), conference ... M.D., to discuss the key issues and latest developments in hematology drug ...
... , FORT WORTH, Texas , ... of a new educational module "Exploring Biofilms," an,accredited, online course designed ... play in chronic wound infections. , ... "Bacterial biofilms are a ...
Cached Biology Technology:Open Source Clinical Trials Software Featured at the 46th DIA Annual Meeting 2Open Source Clinical Trials Software Featured at the 46th DIA Annual Meeting 3PRA International Exhibits at European Hematology Association Congress 2The Wound Institute(R) Launches Educational Course on Bacterial Biofilms 2The Wound Institute(R) Launches Educational Course on Bacterial Biofilms 3The Wound Institute(R) Launches Educational Course on Bacterial Biofilms 4
Immunogen: VDAC3 Protein Storage: -20 C, Avoid Freeze/Thaw Cycles...
TRBP1 Antibody...
Complete cell culture media with cytokines...
Collected from sexually mature, mixed sex, mixed breed cats. Physiochemical constituents are measured to ensure lot-to-lot consistency....
Biology Products: