Navigation Links
Researchers gain insight into 100-year-old Haber-Bbosch process
Date:11/11/2011

For the past 100 years, the Haber-Bosch process has been used to convert atmospheric nitrogen into ammonia, which is essential in the manufacture of fertilizer. Despite the longstanding reliability of the process, scientists have had little understanding of how it actually works. But now a team of chemists, led by Patrick Holland of the University of Rochester, has new insight into how the ammonia is formed. Their findings are published in the latest issue of Science.

Holland calls nitrogen molecules "challenging." While they're abundant in the air around us, which makes them desirable for research and manufacturing, their strong triple bonds are difficult to break, making them highly unreactive. For the last century, the Haber-Bosch process has made use of an iron catalyst at extremely high pressures and high temperatures to break those bonds and produce ammonia, one drop at a time. The question of how this works, though, has not been answered to this day.

"The Haber-Bosch process is efficient, but it is hard to understand because the reaction occurs only on a solid catalyst, which is difficult to study directly," said Holland. "That's why we attempted to break the nitrogen using soluble forms of iron."

Holland and his team, which included Meghan Rodriguez and William Brennessel at the University of Rochester and Eckhard Bill of the Max Planck Institute for Bioinorganic Chemistry in Germany, succeeded in mimicking the process in solution. They discovered that an iron complex combined with potassium was capable of breaking the strong bonds between the nitrogen (N) atoms and forming a complex with an Fe3N2 core, which indicates that three iron (Fe) atoms work together in order to break the N-N bonds. The new complex then reacts with hydrogen (H2) and acid to form ammonia (NH3) -- something that had never been done by iron in solution before.

Despite the breakthrough, the Haber-Bosch process is not likely to be replaced
'/>"/>

Contact: Peter Iglinski
peter.iglinski@rochester.edu
585-273-4726
University of Rochester
Source:Eurekalert

Page: 1 2

Related medicine news :

1. Researchers map all the fragile sites of the yeast Saccharomyces cerevisiaes genome
2. UH Case Medical Center researchers publish promising findings for advanced cervical cancer
3. Researchers discover new way to kill pediatric brain tumors
4. Researchers Who Discovered First Genes for Stuttering will Present Findings to the National Stuttering Association
5. Researchers create drug to keep tumor growth switched off
6. Urine protein test might help diagnose kidney damage from lupus, UT Southwestern researchers find
7. GUMC researchers say flower power may reduce resistance to breast cancer drug tamoxifen
8. Clemson researchers develop hands-free texting application
9. Researchers find biomarkers in saliva for detection of early-stage pancreatic cancer
10. Researchers chart genomic map spanning over 2 dozen cancers
11. Researchers discover second protective role for tumor-suppressor
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... News) -- Teens who are sensitive to light or ... emotional symptoms such as anxiety and depression, a new ... may exacerbate issues teens experience after concussion may help ... decisions about when to return to play and what ... authors Lisa Koehl and Dong Han, of the University ...
(Date:7/10/2014)... HealthDay Reporter THURSDAY, July 10, 2014 (HealthDay ... regularly between outspoken celebrities or loudmouth pundits -- too much ... study suggests. High amounts of Twitter use can lead ... in a long-term relationship, according to findings from an online ... can lead to cheating and breakups, the researchers concluded, although ...
(Date:7/10/2014)... responders felt better prepared to respond to an active ... a new study in the journal Prehospital and ... specifically examine the EMS provider comfort level with respect ... yet been neutralized or working with law enforcement personnel ... High School shooting, the Virginia Tech campus shooting, the ...
(Date:7/10/2014)... PHILADELPHIA Reducing the amount of alcoholic beverages ... health, including a reduced risk of coronary heart ... pressure, according to a new multi-center study published ... the Perelman School of Medicine at the University ... previous studies which suggest that consuming light-to-moderate amounts ...
(Date:7/10/2014)... Department of Health and Human Services (HHS) has announced ... Center Seidman Cancer Center totaling $4.7 million to support ... patients with complex cancer. , Titled "Evidence-Conformant Oncology ... at UH to enhance care for adult cancer patients ... high health care utilization. , "We believe ...
Breaking Medicine News(10 mins):Health News:Some Teens May Face Emotional Problems After Concussion 2Health News:Are You Tweeting Your Marriage Away? 2Health News:Are You Tweeting Your Marriage Away? 3Health News:Active shooter training increases comfort level of emergency responders 2Health News:New study shows drinking alcohol provides no heart health benefit 2Health News:UH Case Medical Center awarded $4.7 million grant from HHS 2Health News:UH Case Medical Center awarded $4.7 million grant from HHS 3
... 17 (HealthDay News) -- Children with bipolar disorder and ... time looking at the eyes when trying to identify ... researchers say. This new study finding may help ... dysregulation have difficulty determining other people,s emotional expressions, said ...
... 17, 2011 -- Factors such as low hemoglobin levels, increased ... higher risk of silent cerebral infarcts (SCIs), or silent strokes, ... from a large, first-of-its-kind study published online today ... the American Society of Hematology (ASH). Silent strokes ...
... (HealthDay News) -- Most people who join gangs have ... that challenges previous research suggesting gang membership is driven ... an antisocial personality are impulsive, lack self-discipline and self-control, ... this, they may be excluded from groups at school ...
... increasingly common, and a dangerous lack of new infection ... than ever to use existing antibiotics appropriately. This week, ... care providers, and policymakers about when antibiotics can help, ... harm than good, and the tremendous need for new ...
... that keep blood vessels open to treat heart disease ... in the Journal of Interventional Cardiology . A ... Grines, of the Detroit Medical Center Cardiovascular Institute, and ... attack after the recently marketed Ion stent (Boston Scientific, ...
... InDevR, a Boulder-based biotechnology company that develops advanced ... viruses and other microorganisms, announced today the launch ... colorimetric detection system that incorporates core technology licensed ... will enhance laboratories around the world by offering ...
Cached Medicine News:Health News:Bipolar Kids May Focus on Different Facial Features 2Health News:Study identifies 'silent' stroke risk factors for children with sickle cell anemia 2Health News:Preserving lifesaving antibiotics today and for the future 2Health News:Indevr launches breakthrough colorimetric detection for microarrays using core technology from CU 2
(Date:1/15/2014)... , Jan. 15, 2014 Most osteoporosis patients want ... a recent online survey* sponsored by Mission Pharmacal Company. ... National Osteoporosis Foundation online support community, revealed that 74 ... that comes in a form other than a pill ...
(Date:1/15/2014)... 15, 2014  Novation, the leading health care supply chain ... value-added reseller (VAR) national contracts that expand its portfolio ... at lower costs. These include manufacturer product and service ... assistance and ongoing IT consulting support. ...
(Date:1/15/2014)...  Humberto C. Antunes,  Galderma  worldwide CEO, will receive a ... of Drugs in Dermatology (JDD) at the upcoming ... is January 17-20, 2014, at the Omni Orlando Resort at ChampionsGate ... The ODAC is a distinguished event that delivers a ...
Breaking Medicine Technology:Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 2Mission Pharmacal Conducts Online Survey of Osteoporosis Patients 3New Novation Information Technology VAR Contracts Offer Significant Savings to Hospitals 2Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 2Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 3Galderma's global leader honored with a "Lifetime in Dermatology Achievement Award" by Journal of Drugs in Dermatology 4
... 2008 Genta,Incorporated (Nasdaq: GNTA ) announced ... Company,s lead anticancer,compound will be featured at the ... (AACR). The meeting will be held in San ... of several abstracts, which are,relevant to both the ...
... 4, 2008 VIA,Pharmaceuticals (Nasdaq: VIAP ), ... for the treatment of cardiovascular disease,announced today that ... VIA-2291 Phase 2 clinical trial program recently met ... studies. The DSMB observed a,continued acceptable safety profile ...
Cached Medicine Technology:Specialized Genasense(R) Clinical Trials Featured at AACR Meeting 2Specialized Genasense(R) Clinical Trials Featured at AACR Meeting 3VIA Pharmaceuticals Announces Updated DSMB Safety Results for VIA-2291 Ongoing Phase 2 Clinical Program 2VIA Pharmaceuticals Announces Updated DSMB Safety Results for VIA-2291 Ongoing Phase 2 Clinical Program 3VIA Pharmaceuticals Announces Updated DSMB Safety Results for VIA-2291 Ongoing Phase 2 Clinical Program 4
ThermalSeal RT (5mil) is Optically Clear for Real Time PCR and easy to apply. Works for all plates. Will not wrinkle in the freezer....
DMSO-resistant microplate sealing film...
Sealing tape featuring 3M adhesive technology. Opaque and strong. Prevents photo-degradation....
Aluminum Seal, Reflective, Bulk...
Medicine Products: