نتایج جستجو برای: aerobic oxidation

تعداد نتایج: 148517  

Journal: :Chemical communications 2012
S Kanbak-Aksu M Nahid Hasan W R Hagen F Hollmann D Sordi R A Sheldon I W C E Arends

Confinement of nanometallic Pd within the core of a hyperthermophilic ferritin cage (from Pyrococcus furiosus) is reported. The resulting nanostructured hybrid catalysts can be used for highly specific aerobic oxidation of alcohols in water.

Journal: :Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 2012
Norihiro Tada Yuki Ikebata Tomoya Nobuta Shin-ichi Hirashima Tsuyoshi Miura Akichika Itoh

This paper reports a useful method for facile direct syntheses of aromatic methyl esters from methyl aromatics by aerobic photo-oxidation using anthraquinone-2,3-dicarboxylic acid as an organophotocatalyst.

Journal: :Chemical communications 2014
O Bortolini C Chiappe M Fogagnolo P P Giovannini A Massi C S Pomelli D Ragno

N-Heterocyclic carbene catalysis for the aerobic oxidation and esterification of aromatic aldehydes was monitored by ESI-MS (MS/MS) and the key intermediates were intercepted and characterized using the charge-tag strategy.

In the present work, we have reported the in situ oxidation of manganese (II) acetate to MnO2 nanoparticles through the thermal plasma carbonized natural hydroxyapatite (MnO2/TP-NHAp) as a neoteric sustainable method. Interestingly, the thermal plasma-processed surface of the NHAp shows a great ability for oxidation of the manganese (II) without need of any external oxidizing agents. The cataly...

2014
Eduardo Gómez-Gómez Martín Efrén Ríos-Martínez Elena Margarita Castro-Rodríguez Mario Del-Toro-Equíhua Mario Ramírez-Flores Ivan Delgado-Enciso Ana Lilia Pérez-Huitimea Luz Margarita Baltazar-Rodríguez Gilberto Velasco-Pineda Jesús Muñiz-Murguía

Carnitine palmitoyltransferase IB (CPT1B) and adrenoceptor beta-3 (ADRB3) are critical regulators of fat metabolism. CPT1B transports free acyl groups into mitochondria for oxidation, and ADRB3 triggers lipolysis in adipocytes, and their respective polymorphisms E531K and W64R have been identified as indicators of obesity in population studies. It is therefore important to understand the effect...

2017
Masaki Takahashi Hiromu Koizumi Wang-Jae Chun Makoto Kori Takane Imaoka Kimihisa Yamamoto

The catalytic activity of alloy nanoparticles depends on the particle size and composition ratio of different metals. Alloy nanoparticles composed of Pd, Pt, and Au are widely used as catalysts for oxidation reactions. The catalytic activities of Pt and Au nanoparticles in oxidation reactions are known to increase as the particle size decreases and to increase on the metal-metal interface of al...

2013
Natsuko Hamamura Koh Fukushima Takaaki Itai

Antimony (Sb) is a naturally occurring toxic element commonly associated with arsenic (As) in the environment and both elements have similar chemistry and toxicity. Increasing numbers of studies have focused on microbial As transformations, while microbial Sb interactions are still not well understood. To gain insight into microbial roles in the geochemical cycling of Sb and As, soils from Sb m...

1999
D. U. Ahn D. G. Olson

and Implications Irradiation dose had a significant effect on the production of volatiles in both vacuumand aerobic-packaged cooked pork sausage, but its effect on the thiobarbituric acid reactive substances (TBARS) values was minor. Storage increased the production of volatiles and changed the composition of volatiles only in aerobic-packaged sausage. Among the volatile components, 1-heptene a...

Journal: :Physical chemistry chemical physics : PCCP 2013
Ye-Fei Li Zhi-Pan Liu

This work explores thoroughly the reaction network of the partial oxidation of phenylmethanol at the TiO(2)-solvent interface under photocatalytic conditions by using a first-principles continuum solvation method. We demonstrate that the photocatalytic oxidation of phenylmethanol has a complex reaction network with dual pathways. The dimer pathway dominates the mechanism under aerobic condition...

Journal: :Chemical communications 2015
G Urgoitia R SanMartin M T Herrero E Domínguez

A convenient and sustainable protocol for the aerobic oxidation of benzyl alcohols to carbonyl compounds, based on the use of 1,2,4-triazole-type ligands and nickel(II) bromide, is described. This combination leads to the formation of an exceedingly active, enzyme-like system that allows for other oxidative processes, such as benzylic C-H oxidation and oxygen-mediated cleavage of C-C triple bon...

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