Meine Merkliste
my.chemie.de  
Login  

2.024 Aktuelle Fachpublikationen zum Thema temperature

rss
mit folgenden Suchkriterien:

Cu/ZnO Nanocatalysts in Response to Environmental Conditions: Surface Morphology, Electronic Structure, Redox State and CO2 Activation

29.10.2014 | Luis Martínez-Suárez; Johannes Frenzel; Dominik Marx, Physical Chemistry Chemical Physics, 2014

Methanol synthesis is one of the landmarks of heterogeneous catalysis due to the great industrial significance of methanol as a clean liquid fuel and as a raw material for industry. Understanding in atomistic detail the properties of the underlying metal/oxide catalyst materials as a function of ...

mehr

Glycerol Mediated Strecker Reaction: Catalyst-free Protocol for the Synthesis of α-Amino Nitriles

28.10.2014 | S. Ghogare, Ramesh; Rajeshwari, K.; Venkat Narsaiah, A., Letters in Organic Chemistry, 2014

Abstract: Environmental friendly multicomponent protocol for the preparation of α-amino nitriles has been developed. In this methodology, glycerol was demonstrated as an efficient and alternative solvent for organic synthesis. After the reaction, glycerol was recovered and reused for ...

mehr

Nanocryatalline Pt-CeO2 as an efficient catalyst for room temperature selective reduction of nitroarenes

28.10.2014 | Rajaram Bal; Astha Shukla; Rajib K Singha; Takehiko Sasaki, Green Chemistry, 2014

We have developed a new synthesis strategy to prepare Pt nanoparticles with size between 2-5 nm supported on CeO2 nanoparticle with size between 30-60 nm by hydrothermal method in presence of surfactant cetyltrimethyl ammonium bromide( CTAB) and polymer (PVP). It was found that the catalyst is ...

mehr

Asymmetric Michael Addition of 5 H‐Oxazol‐4‐ones to Vinyl Sulfones: Stereoselective Synthesis of Monofluorinated Analogs of 2‐Tertiary Hydroxyl‐3‐Methyl‐Substituted Carboxylic Acidl Derivatives

24.10.2014 | Qian Liu, Baokun Qiao, Kek Foo Chin, Choon‐Hong Tan, Zhiyong Jiang, Advanced Synthesis & Catalysis, 2014

Abstract An asymmetric Michael addition of 5H‐oxazol‐4‐ones to vinyl sulfones has been developed. In the presence of 10 mol % of quinine‐based benzyl‐substituted thiourea as catalyst at 0 °C, the products could be obtained with excellent enantio‐ and diastereoselectivity (up to>99 % ee ...

mehr

ChemInform Abstract: A 2‐Iodobenzamide Catalyst for Oxidation of Alcohols at Room Temperature.

23.10.2014 | Takayuki Yakura, Akihiro Yamada, Narumi Noda, Tomoya Fujiwara, Hisanori Nambu, ChemInform, 2014

Abstract Treatment of primary and secondary alcohols with a catalytic amount of iodobenzamide in the presence of oxone yields the corresponding carbonyl compounds.

mehr

ChemInform Abstract: An Efficient Palladium N‐Heterocyclic Carbene Catalyst Allowing the Suzuki—Miyaura Cross‐Coupling of Aryl Chlorides and Arylboronic Acids at Room Temperature in Aqueous Solution.

23.10.2014 | Fatemeh Rajabi, Werner R. Thiel, ChemInform, 2014

Abstract This method gives the coupling products in high yields even at low catalyst loadings.

mehr

ChemInform Abstract: Highly Efficient and Chemoselective Transfer Hydrogenation of Nitroarenes at Room Temperature over Magnetically Separable Fe—Ni Bimetallic Nanoparticles.

23.10.2014 | Dhananjay R. Petkar, Brijesh S. Kadu, Rajeev C. Chikate, ChemInform, 2014

Abstract Fe‐Ni nanoparticles are used as catalyst for the selective hydrogenation of nitroarenes (I) to anilines (II) as well as cinnamic ester (III) to 3‐phenylpropanoate (IV).

mehr

Thermal Non‐Oxidative Aromatization of Light Alkanes Catalyzed by Gallium Nitride

22.10.2014 | Lu Li, Xiaoyue Mu, Wenbo Liu, Xianghua Kong, Shizhao Fan, Zetian Mi, Chao‐Jun Li, Angewandte Chemie International Edition, 2014

Abstract The thermal catalytic activity of GaN in non‐oxidative alkane dehydroaromatization has been discovered for the first time. The origin of the catalytic activity was studied experimentally and theoretically. Commercially available GaN powders with a wurtzite crystal structure showed ...

mehr

The Direct Electrophilic Cyanation of [small beta]-Keto Esters and Amides with Cyano Benziodoxole

21.10.2014 | Yao-Feng Wang; Jiashen Qiu; Dejie Kong; Yongtao Gao; Feipeng Lu; Pran Gopal Karmaker; fuxue chen, Organic & Biomolecular Chemistry, 2014

The direct electrophilic α-cyanation of β-keto esters and amides has been developed using hypervalent iodine benziodoxole-derived cyano reagent. It accomplishes within 10 min without any catalyst in DMF at room temperature. Thus, the highly functionallized quaternary carbon-centered nitriles were ...

mehr

Transition metal oxide catalysts as an alternative for the oxidation of nitrogen monoxide to nitrogen dioxide: kinetic modelling at high space velocity

18.10.2014 | Leonardo Tecchio, Pablo Marín, Fernando V. Díez, Salvador Ordóñez, Journal of Chemical Technology & Biotechnology, 2014

Abstract Background The oxidation of NO to NO2 is a key step in environmental pollution abatement techniques, such as the “fast‐SCR” or the diesel engines catalytic traps. In both cases, the conversion of an important fraction of NO into NO2 is a key step. In this work, two commercially ...

mehr

Seite 1 von 203
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.