نتایج جستجو برای: aerobic alcohol oxidation

تعداد نتایج: 262179  

Journal: :Chemcatchem 2022

Catalysis drives the conversion of substrates to wanted products under amenable reaction conditions. In this context, one that is particularly important from industrial point view cyclohexane aerobic oxidation a mixture corresponding cyclohexanone and cyclohexanol. This key for production Nylon 6 6,6, two polyamides growing production. The process clearly unsatisfactory since it run at low conv...

Journal: :Behavior Modification 2008

2017
Wuyuan Zhang Jenő Gacs Isabel W C E Arends Frank Hollmann

The aerobic organocatalytic oxidation of alcohols was achieved by using water-soluble sodium anthraquinone sulfonate. Under visible-light activation, this catalyst mediated the aerobic oxidation of alcohols to aldehydes and ketones. The photo-oxyfunctionalization of alkanes was also possible under these conditions.

2017
Scott D. McCann Jean-Philip Lumb Bruce A. Arndtsen Shannon S. Stahl

A homogeneous Cu-based catalyst system consisting of [Cu(MeCN)4]PF6, N,N'-di-tert-butylethylenediamine (DBED), and p-(N,N-dimethylamino)pyridine (DMAP) mediates efficient aerobic oxidation of alcohols. Mechanistic study of this reaction shows that the catalyst undergoes an in situ oxidative self-processing step, resulting in conversion of DBED into a nitroxyl that serves as an efficient cocatal...

Journal: :Journal of hazardous materials 2006
Nilesh P Tantak Sanjeev Chaudhari

A two stage sequential Fenton's oxidation followed by aerobic biological treatment train was used to achieve decolorization and to enhance mineralization of azo dyes, viz. Reactive Black 5 (RB5), Reactive Blue 13 (RB13), and Acid Orange 7 (AO7). In the first stage, Fenton's oxidation process was used while in the second stage aerobic sequential batch reactors (SBRs) were used as biological proc...

Journal: :Chemical communications 2015
Yi Deng Guanghui Zhang Xiaotian Qi Chao Liu Jeffrey T Miller A Jeremy Kropf Emilio E Bunel Yu Lan Aiwen Lei

In situ infrared (IR) and X-ray absorption near-edge structure (XANES) spectroscopic investigations reveal that different halide ligands have distinct effects on the aerobic oxidation of Cu(i) to Cu(ii) in the presence of TMEDA (tetramethylethylenediamine). The iodide ligand gives the lowest rate and thus leads to the lowest catalytic reaction rate of aerobic oxidation of hydroquinone to benzoq...

Journal: :ChemSusChem 2010
Vincenzo Augugliaro Leonardo Palmisano

The selective conversion of alcohols to carbonyl compounds is essential for the preparation of fragrances, food additives, and many organic intermediates. This transformation is carried out by catalytic processes that are of fundamental importance in synthetic chemistry. Catalytic oxidation has long been carried out in environmentally harmful organic solvents (often chlorinated ones) at high te...

Journal: :The American journal of clinical nutrition 2010
Gert-Jan van der Heijden Pieter Jj Sauer Agneta L Sunehag

BACKGROUND Exercise might have a persistent effect on energy expenditure and fat oxidation, resulting in increased fat loss. However, even without weight loss, exercise results in positive metabolic effects. The effect of an aerobic exercise program on 24-h total energy expenditure (TEE) and its components-basal (BEE), sleep (SEE), and awake sedentary (SEDEE) energy expenditure and substrate ox...

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