Composite mechanism of the catalytic hydrogenation of unsaturated hydrocarbons on hydrided magnesium intermetallides

Molchanov, V. V.; Goidin, V. V.; Buyanov, R. A.

doi:10.1134/s0023158406050132

Cited by 3 publications

(2 citation statements)

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“…The mechanism of hydrogenation has been established. Hydrogenation follows the stage mechanism in the low-temperature region and the heterogeneous-homogeneous radical mechanism at relatively high temperatures 11) . The mechanochemical activation of the metal powders at a hydrogen pressure of 100 atm permitted the synthesis of two formerly unknown intermetallic hydrides as Mg2NiH6 and MgCuH2 exhibiting hydrogenating abilities 12) .…”

Section: Some Results Of Mca Applications For Catalyst Preparationsmentioning

confidence: 99%

Mechanochemical Activation for Resolving the Problems of Catalysis

Buyanov

Molchanov

Болдырев

2009

KONA

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Plausible MCA Applications in CatalysisThe Principle Sections of Catalysis are as Follows:2.1. Development of the scientific basis of catalyst preparation. The content of this division/section is determined by its main problem, i.e. development of the methods of preparation of catalysts with the desired properties. These are: specific surface area, porous structure, phase composition, crystallization degree, morphological properties of crystals, defectiveness, dispersion, thermal stability, structural and mechanical properties, component distributions on the supports, etc. To solve the problem, one should investigate the physicochemical regularities which determine the features of synthesis and the action of materials during all stages of the method chosen for the preparation of separate families of similar materials, catalysts in our case 1) . Development of the scientific basis for prediction of catalytic actionThis section includes the most complicated and important problems, such as: ・ Chemical nature, structure and mechanism of action of active sites during operation on the catalyst surface; ・ Nature and relationships between the main and side reactions of catalytically active sites, the means and methods of influencing the above in order to increase selectivity towards the desired product;

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Section: Some Results Of Mca Applications For Catalyst Preparationsmentioning

confidence: 99%

Mechanochemical Activation for Resolving the Problems of Catalysis

Buyanov

Molchanov

Болдырев

2009

KONA

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“…A series of compounds, based on intermetallic compounds of a transition metal and a main group metal, have been successfully tested as hydrogenation catalysts recently. Mg 2 CoH 5 , Mg 2 NiH 4 , Mg 2 FeH 6 , and MgCuH 2 are able to hydrogenate ethylene, n-butenes, as well as 1,3-butadiene (65). Also, this class of compounds can activate C O bonds, enabling the synthesis of 2-propanol by hydrogenation of acetone (66).…”

Section: Intermetallic Compounds As Precursor Materialsmentioning

confidence: 99%

Intermetallic Compounds in Catalysis

Armbrüster

2011

Encyclopedia of Catalysis

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In catalysis, intermetallic compounds play an important role as precursors for skeletal catalysts or can be formed under reaction conditions and influence the catalytic properties significantly. They can also be applied as catalysts in an unsupported state in a large number of reactions. Intermetallic compounds are structurally more complex than elemental metals or substitutional alloys and thus offer a broad range of different crystal and electronic structures. In addition, the often partly covalent bonding in the compounds increases their stability under reaction conditions and enables an innovative realization of geometric and electronic concepts. This article summarizes the work in the field, aiming at presenting the different ideas and not at giving a full literature review. Special emphasis is put on the knowledge‐based development, which becomes feasible using unsupported and in situ stable intermetallic compounds as catalysts.

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