Carbides of transition metals as catalysts for oxidation reactions

The promotion of pollutant oxidation degradation efficiency by adding organic catalysts has obtained widespread attention in recent years. Studies have shown that organic substances promote the process of traditional oxidation reactions by accelerating the redox cycle of transition metals, chelating transition metals, activating oxidants directly to generate reactive oxygen species such as hydroxyl and sulfate radical, or changing the electron distribution of the target pollutant. Based on the promotion of typical organic functional groups on the chemical oxidative process, a metal-organic framework has been developed and applied in the field of chemical catalytic oxidation. This manuscript reviewed the types, relative merits, and action mechanisms of common organics which promoted oxidation reactions so as to deepen the understanding of chemical oxidation mechanisms and enhance the practical application of oxidation technology.

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The Catalytic Roles of Surface Transition Metals on the Hydrogen Evolution/Oxidation Reactions of Pt-Surfaces in Base

ECS Meeting Abstracts ◽

10.1149/ma2019-01/29/1384 ◽

2019 ◽

Keyword(s):

Transition Metals ◽

Hydrogen Evolution ◽

Oxidation Reactions ◽

Surface Transition

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Oxidation of cyclic ketones to dicarboxylic acids

Polish Journal of Chemical Technology ◽

10.2478/pjct-2018-0061 ◽

2018 ◽

Vol 20 (4) ◽

pp. 102-107 ◽

Cited By ~ 1

Author(s):

Dawid Lisicki ◽

Beata Orlińska

Keyword(s):

Acetic Acid ◽

Transition Metals ◽

Glutaric Acid ◽

Raw Materials ◽

Dicarboxylic Acids ◽

Dodecanoic Acid ◽

Oxidation Reactions ◽

Cyclic Ketones ◽

Alternative Method ◽

Materials Used

Abstract This paper reports the results of studies concerning an alternative method of obtaining dicarboxylic acids, which consist of the oxidation of cyclic ketones with oxygen or air. The raw materials used were cyclopentanone, cycloheptanone, cyclooctanone, cyclododecanone, 1-tetralon, 2-methylhexanone, 3-methylcyclohexanone and 4-methylcyclohexanone. Oxidation reactions were conducted at 70-100°C, under pressure of 0.1 or 0.4 MPa, for 6 h, utilizing the salts of transition metals as catalyst and acetic acid as solvent. For example, when cyclopentanone was oxidized in the presence of Mn(II) salt, a conversion above 98% and selectivity to glutaric acid up to 68% were obtained. Among synthesized dicarboxylic acids, 1,12-dodecanoic acid was obtained with the highest selectivity of 76%.

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ChemInform Abstract: Carbides of Transition Metals as Catalysts for Oxidation Reactions

ChemInform ◽

10.1002/chin.199640300 ◽

2010 ◽

Vol 27 (40) ◽

pp. no-no

Author(s):

N. I. ILCHENKO ◽

YU. I. PYATNITSKY

Keyword(s):

Transition Metals ◽

Oxidation Reactions

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Catalytic properties of the carbides of transition metals in oxidation reactions

Theoretical and Experimental Chemistry ◽

10.1007/bf02523256 ◽

1998 ◽

Vol 34 (5) ◽

pp. 239-256 ◽

Cited By ~ 2

Author(s):

N. I. Il'chenko ◽

Yu. I. Pyatnitskii ◽

N. V. Pavlenko

Keyword(s):

Transition Metals ◽

Catalytic Properties ◽

Oxidation Reactions

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Precipitation in silicon: Microanalysis

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100104431 ◽

1988 ◽

Vol 46 ◽

pp. 474-475

Author(s):

R.W. Carpenter

Keyword(s):

Transition Metals ◽

Spatial Resolution ◽

Thin Foil ◽

Precipitation Reaction ◽

High Current ◽

Reaction Products ◽

Carbon And Nitrogen ◽

Dielectric Layers ◽

Precipitation Processes ◽

Areas Of Interest

Interest in precipitation processes in silicon appears to be centered on transition metals (for intrinsic and extrinsic gettering), and oxygen and carbon in thermally aged materials, and on oxygen, carbon, and nitrogen in ion implanted materials to form buried dielectric layers. A steadily increasing number of applications of microanalysis to these problems are appearing. but still far less than the number of imaging/diffraction investigations. Microanalysis applications appear to be paced by instrumentation development. The precipitation reaction products are small and the presence of carbon is often an important consideration. Small high current probes are important and cryogenic specimen holders are required for consistent suppression of contamination buildup on specimen areas of interest. Focussed probes useful for microanalysis should be in the range of 0.1 to 1nA, and estimates of spatial resolution to be expected for thin foil specimens can be made from the curves shown in Fig. 1.

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