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Archives :: Chementator :: Catalysis

Displaying 41 - 60 of 61 stories.
April 1, 2012
In conventional hydrogen and ammonia plants, the final conversion of CO to H2 occurs across the low-temperature shift (LTS) catalyst. This makes the LTS catalyst one of the most important catalysts in the plant — even small changes in its performance will have a significant impact on operating costs, says Kristina Svennerberg, marketing manager, shift and synthesis catalysts at Haldor Topsøe...
http://www.che.com/chementator/catalysis/This-new-LTS-catalyst-delivers-a-boost-for-H2-and-NH3-production_9168.html
March 1, 2012
A naphtha-cracking process with improved yield, reduced coking and longer catalyst life is being developed in a five-year Japanese project led by professor Takashi Tatsumi at the Tokyo Institute of Technology (TiTech; www.titech.ac.jp), with participation from the National Institute of Advanced Industrial Science and Technology (AIST), Hokkaido University, Yokohama National University, three petrochemical...
http://www.che.com/chementator/catalysis/Nanosized-zeolite-catalyst-shows-promise-for-improving-naphtha-cracking_9033.html
March 1, 2012
A naphtha-cracking process with improved yield, reduced coking and longer catalyst life is being developed in a five-year Japanese project led by professor Takashi Tatsumi at the Tokyo Institute of Technology (TiTech; www.titech.ac.jp), with participation from the National Institute of Advanced Industrial Science and Technology (AIST), Hokkaido University, Yokohama National University, three petrochemical...
http://www.che.com/chementator/catalysis/Nanosized-zeolite-catalyst-shows-promise-for-improving-naphtha-cracking_9162.html
March 1, 2012
A new catalyst design, in which gallium atoms are integrated into the zeolite catalyst structure, can increase yields of aromatic compounds from biomass by 40% in a catalytic fast-pyrolysis process. The higher yields of benzene, toluene and xylenes (BTX), as well as ethylene and propylene, achieved with the gallium-containing zeolite...
http://www.che.com/chementator/catalysis/Adding-gallium-to-biomass-pyrolysis-catalyst-increases-BTX-yield_9167.html
February 1, 2012
Professor Kenichiro Itami and coworkers at at Nagoya University (Nagoya, Japan; synth.chem.nagoya-u.ac.jp) have developed a new, next-generation type of cross-coupling reaction for synthesizing biphenyl compounds — one of the most important backbone structures for pharmaceutical and electronics chemicals. The chemists have developed the first nickel-catalyzed arylation reaction of...
http://www.che.com/chementator/catalysis/Next-generation-cross-coupling-reactions_8934.html
January 1, 2012
Gold catalysts have been shown to have superior activities for oxidation reactions, especially at low temperature, compared to other metal-based catalysts. But the high price of gold makes it necessary to develop Au catalysts with ever-higher activities, reducing the amount of Au needed. A promising step in this direction is a new type of catalyst developed by Professor Naoki Toshima and his research group...
http://www.che.com/chementator/catalysis/This-gold-catalyst-takes-the-crown-for-high-activity-and-selectivity_8822.html
December 1, 2011
A catalyst for making amides from alcohols and amines under aerobic conditions has been developed by Professor Shu Kobayashi and his research group at the University of Tokyo (Tokyo, www.chem.s.u-tokyo.ac.jp/users/synorg/index_e.html). The catalyst — nano particles (2.4-nm dia.) of gold and cobalt — is said to produce amides with...
http://www.che.com/chementator/catalysis/Making-amides-with-high-yield-less-waste_8745.html
November 1, 2011
For the first time, an organic compound has been synthesized from water, carbon dioxide and sunlight — without any other external energy or reagents. The achievement, which was demonstrated by researchers at Toyota Central Research and Development Laboratories, Inc. (Toyota CRDL; Aichi Prefecture, Japan; www. tytlabs.co.jp), a subsidiary of Toyota Motor Corp., is...
http://www.che.com/chementator/catalysis/Making-formic-acid-by-artificial-photosynthesis_8601.html
November 1, 2011
The Fine Chemicals div. of Takasago International Corp. (Tokyo, Japan; www.takasago.com) has commercialized Deneb: Oxo-Tethered Ruthenium (II) Complex, which shows higher catalytic activities compared to conventional RuCl (arene)(N-sulfonylated diamine) catalyst systems. The higher activity enables a reduction in...
http://www.che.com/chementator/catalysis/A-new-catalyst-for-asymmetric-transfer-hydrogenation-reactions_8613.html
November 1, 2011
Base-catalyzed decomposition (BCD) is a commercially used process developed in the early 1990s by the U.S. Environmental Protection Agency (EPA; Washington, D.C.) for the destruction of persistent organic pollutants (POPs). It has been used as an...
http://www.che.com/chementator/catalysis/New-catalyst-allows-lower-temperature-waste-destruction_8614.html
October 1, 2011
A technique that improves the efficiency of ethanol plants by lowering the cost of dewatering the byproduct stillage (a slurry of corn solids and water) from the fermentation process has been developed by scientists at the U.S. Department of Agriculture’s (USDA) Eastern Regional Research Center (Wyndmoor, Pa.; www.ars.usda.gov). The process has been demonstrated at full scale in a commercial plant...
http://www.che.com/chementator/catalysis/Dewatering-enzymes-boost-ethanol-production-efficiency_8514.html
October 1, 2011
Professor Yuki Taniguchi at the Chemicals Research Institute, Tokyo Institute of Technology (Japan, www.res.titech.ac.jp/~gosei/taniguchi/index.html) has developed a new catalyst system that decomposes volatile organic compounds (VOCs) at lower temperatures than that required by conventional catalysts. The SILP (supported ionic liquid phase) catalyst is composed of silica gel impregnated with an ionic...
http://www.che.com/chementator/catalysis/A-new-heterogeneous-catalyst-for-low-temperature-VOC-decomposition_8515.html
August 1, 2011
The Fine Chemicals Div. of Takasago International Corp. (Takasago; Tokyo, Japan; www.takasago.com) has commercialized a new, highly efficient asymmetric hydrogenation catalyst for producing chiral alcohols — key chemicals for the production of pharmaceuticals, fragrances and agrochemicals. The ruthenium-complex catalyst is tradenamed RUCY after its molecular structure, ruthenabicycle...
http://www.che.com/chementator/catalysis/Commercial-launch-of-a-new-asymmetric-hydrogenation-catalyst_8279.html
June 1, 2011
A research team from Los Alamos National Laboratory (Los Alamos, N.M.; www.lanl.gov) has developed a novel catalyst for the cathode of a fuel cell that avoids using expensive ($1,800/oz.) platinum metal. The cathode catalyst...
http://www.che.com/chementator/catalysis/A-platinum-free-fuel-cell-catalyst_8093.html
June 1, 2011
A team from CSIRO Materials Science and Engineering (Melbourne, Australia; www.csiro.au) has developed a new technique for growing smart materials known as metal-organic frameworks (MOFs), which can be used in pollution control, or as catalysts, or for transporting drugs in the human body. MOFs are well-ordered ultra-porous crystals that form multi-dimensional structures with huge surface areas. One gram...
http://www.che.com/chementator/catalysis/A-new-way-to-grow-functional-MOFs_8101.html
June 1, 2011
A team led by Rice University (Houston; www.rice.edu) researcher Michael Deem has assembled a database of 2.6 million possible unique zeolites — porous silicate minerals often used as catalysts or molecular sieves. The database of potential structures...
http://www.che.com/chementator/catalysis/A-comprehensive-zeolite-database_8105.html
May 1, 2011
Scientists from the National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba, Japan; www.aist.go.jp), in collaboration with Tokyo University of Science and Panchakot Mahavidyalaya University, have demonstrated that a nickel-complex-type organic nanotube (Ni-ONT), developed by AIST, can catalyze oxidation reactions for producing industrial chemicals. For example, the researchers have...
http://www.che.com/chementator/catalysis/A-renewable-green-oxidation-catalyst_7933.html
March 1, 2011
Tokyo Chemical Industry Co. (TCI; Tokyo; www.tokyokasei.co.jp) is planning full-scale production of a new palladium-complex catalyst, trade-named SingaCycle-E1, for performing Heck-Mizoroki carbon-carbon coupling reactions and the Suzuki-Miyaura cross-coupling reaction — both reactions of importance for producing pharmaceuticals. TCI says SingaCycle-E1 offers enhanced activity and improved stability...
http://www.che.com/chementator/catalysis/A-new-catalyst-for-C-C-and-crossed-coupling_6427.html
May 1, 2009
Researchers at United Environment & Energy (UE&E; Horseheads, N.Y.) have developed a catalyst for the efficient conversion of algae to biodiesel. The mixed-metal oxide catalyst (comprised of metals that are resistant to corrosion yet reactive) facilitates the transesterification of algae oil and methanol. The mechanism for the reaction over the solid...
http://www.che.com/chementator/catalysis/Solid-catalyst-simplifies-turning-algae-into-biodiesel_4781.html
May 1, 2009
A new procedure for making uniform, metallic nanoparticles has been developed by the research group of Kousuke Mori, an associate professor at Osaka University (www.mat.eng.osaka-u.ac.jp), with support from New Energy and Industrial Technology Development Organization (NEDO; Kawasaki, both Japan). The photo-assisted process, which uses...
http://www.che.com/chementator/catalysis/A-better-way-to-make-efficient-catalysts_4782.html
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