Selective hydrogenation of phenylacetylene on Ni and Ni-Pd catalysts modified with heteropoly compounds of the Keggin type

Navalikhina, M. D.; Kavalerskaya, N. E.; Локтева, Е. С.; Peristyi, A. A.; Голубина, Е. В.; Лунин, В. В.

doi:10.1134/s0036024412120187

Cited by 12 publications

(14 citation statements)

References 18 publications

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“…The decrease in the process selectivity with respect to isoprene is probably caused by crystallographic changes of the active surface, characteristic of nickel catalysts. For example, the known promoters, heteropoly compounds (Mo and V), increase the selectivity of phenylacetylene hydrogenation to styrene owing to a decrease in the size of Ni particles and changes in the adsorption characteristics [9,11].…”

Section: Resultsmentioning

confidence: 99%

“…Catalysts for such processes ensure acceptable hydrogenation conditions [1][2][3][4][5][6] or the required process selectivity in targeted hydrogenation of a mixture of unsaturated hydrocarbons [7][8][9][10][11][12][13][14][15][16][17][18]. The latter fact is very important for large-tonnage production of monomers (ethylene, divinyl, isoprene, styrene, etc.…”

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confidence: 99%

“…(1) Buret for feed, (2) pump, (3) reactor with jacket, (4) temperature recorder, (5) drier, (6) bubbler with water, (7) hydrogen fl ow meter, (8) cylinder with hydrogen,(9,11) separators, and (…”

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confidence: 99%

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Specific features of operation of nickel as a component of a catalyst for production of monomers

et al. 2015

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Section: Resultsmentioning

confidence: 99%

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Specific features of operation of nickel as a component of a catalyst for production of monomers

et al. 2015

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“…Styrene and ethylbenzene were the only detected products with no observed dealkylation (to toluene) or condensation as reported for reaction over Ni and Ni-Pd catalysts. 167 We can note high alkene selectivities over Au/Al 2 O 3 in the hydrogenation of acetylene, 87,172,173 propyne 174 and 1,3-butadiene. 175 Use of styrene as reactant generated ethylbenzene as sole product, but with an appreciably lower TOF relative to the phenylacetylene feed (Table 11.8).…”

Section: Selective -Cch Hydrogenationmentioning

confidence: 97%

Harnessing the Selective Catalytic Action of Supported Gold in Hydrogenation Applications

Wang¹,

Li²,

Keane³

2014

Heterogeneous Gold Catalysts and Catalysis

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Gold finds diverse uses that cut across the automotive, electronics, medicine, nanotechnology, space and engineering sectors. 1-3 Catalysis by gold is now a priority growth area in terms of technological applications. 4 This has resulted in a number of review articles that have considered different aspects of gold catalysis. [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Bond and co-workers have provided an overview of the status of related research in 1999 and 2006, 5,6 focusing on physicochemical properties, synthesis, characterisation and applications, notably in CO oxidation and the water gas shift reaction. In a more recent article, Bond highlighted the reactivity of gold at the nanoscale in activating small molecules. 20 A number of reviews have examined the catalytic action of gold in selective oxidation and we can flag critical assessments by Hutchings, Edwards and co-workers (catalyst preparation and characterisation), 7 Chen and Goodman (use of Au/TiO 2 as model catalyst),

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“…The Pd catalysts require the mildest of conditions and therefore are the most widely used. However, if a substrate molecule can withstand high temperatures, Ni may also be used for cost-efficiency [3][4][5][6] and it is important to obtain alkene from alkyne (i.e., stop the reaction at the double bond) or hydrogenate a particular double bond or functional group in a diene molecule. This class of reactions is called selective or semi-hydrogenation and may occur in the liquid or gas phase.…”

Section: Introductionmentioning

confidence: 99%

The Reduction of Alkynes Over Pd-Based Catalyst Materials - A Pathway to Chemical Synthesis

Ao¹,

Sk²

2017

J Chem Eng Process Technol

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Many reactions, including selective hydrogenation of alkynes, take place on solid surfaces. These reactions are vital in many areas of industry including the manufacture of polymers and fine chemicals such as vitamins, fragrances, and drugs. The choice of a catalyst is a trade-off between activity, selectivity and costs. Palladium-based heterogeneous catalysts are traditionally used for these processes as they provide the activation of hydrogen at room temperatures and offers reasonable selectivity, but these catalysts have a number of practical drawbacks. This review discusses recent research work in the selective hydrogenation of alkynes on palladium-based catalysts, emphasises the mechanism and catalytic materials and important applications including alkyne removal from gasphase alkene precursors for polymer synthesis and liquid phase selective hydrogenation for the synthesis of fine chemicals. Langmuir-Hinshelwood reaction kinetic models, reaction intermediates, formation of carbonaceous layer, the nature of active sites and the effects of reversible and irreversible adsorbates over Pd surface are discussed as well as the factors affecting catalyst activity and selectivity and how these can be optimised in synthetic protocols for these reactions.

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Selective hydrogenation of phenylacetylene on Ni and Ni-Pd catalysts modified with heteropoly compounds of the Keggin type

Cited by 12 publications

References 18 publications

Specific features of operation of nickel as a component of a catalyst for production of monomers

Specific features of operation of nickel as a component of a catalyst for production of monomers

Harnessing the Selective Catalytic Action of Supported Gold in Hydrogenation Applications

The Reduction of Alkynes Over Pd-Based Catalyst Materials - A Pathway to Chemical Synthesis

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