The synthesis and regeneration of palladium catalysts with the use of supercritical carbon dioxide

Bilalov, T. R.; Гумеров, Ф. М.; Габитов, Ф. Р.; Харлампиди, Х. Э.; Fedorov, G. I.; Сагдеев, А. А.; Yarullin, R. S.; Yakushev, I. A.

doi:10.1134/s1990793109070094

Cited by 9 publications

(7 citation statements)

References 9 publications

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“…The results presented in Table 2 confirm results of earlier carried out research of palladium chloride benzolnitrile complex solubility in supercritical carbon dioxide [9] [16] (Figures 4-6). Earlier stated preferences to ranges of SC-CO 2 -impregnation process parameters implementation can be added with the preferable range of pressures from 19.0 -21.0 MPa.…”

Section: Resultssupporting

confidence: 86%

“…Activity of the prepared catalysts samples study has been carried out on the microcatalytic experimental unit of flowing type which has been described in [9] [16]. Experimental unit used for preliminary treatment of the catalyst (regeneration by hydrogen), and for further test of this catalyst for activity and selectivity during cleaning ethane-ethylene fraction from acetylene impurity.…”

Section: Resultsmentioning

confidence: 99%

“…Experimental unit used for preliminary treatment of the catalyst (regeneration by hydrogen), and for further test of this catalyst for activity and selectivity during cleaning ethane-ethylene fraction from acetylene impurity. The work has been carried out according to the following method which is also described in [9] [16].…”

Section: Resultsmentioning

confidence: 99%

“…The use of supercritical fluids as extractants and solvents in the above-noted processes is one of the most promising ways to improve the processes of regeneration of spent-catalysts and synthesis of new catalytic systems [4]- [6] will be discussed. Thus, if the case of this approach to regeneration is a subject of researches and even commercial realization for several decades [7]- [12], the problem of catalysts synthesis with the use of supercritical fluid-environments was shown only in several research publications [9] [13].…”

Section: Introductionmentioning

confidence: 99%

“…The palladium chloride benzonitrile complex PdCl 2 (C 6 H 5 CN) 2 , which solubility in SC-CO 2 is given in earlier published works [9] [16].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of the Palladium Catalyst with the Supercritical СO2-Impregnation Method Realized in the Static Mode

Zakharov¹,

Jaddoa²,

Bilalov³

et al. 2014

IJAMSC

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Results of research of supercritical fluid CO2-impregnation process (the static mode) within a problem of synthesis of the palladium catalyst are given. The kinetics of process is characterized in the pressure range from 15.0 to 35.0 MPa on temperatures 308.15˚K, 313.15˚K, 318.15˚K, 323.15˚K, 328.15˚K and 333.15˚K. Results of surface assessment and activity measurements of the catalyst samples synthesized by supercritical СO2-impregnation of aluminum oxide suggest competitiveness of the discussed approach in comparison to traditional methods.

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Section: Resultssupporting

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The palladium chloride benzonitrile complex PdCl 2 (C 6 H 5 CN) 2 , which solubility in SC-CO 2 is given in earlier published works [9] [16].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Synthesis of the Palladium Catalyst with the Supercritical СO2-Impregnation Method Realized in the Static Mode

Zakharov¹,

Jaddoa²,

Bilalov³

et al. 2014

IJAMSC

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Dehydrogenation of propane in the presence of CO2 on Cr(3%)/SiO2 catalyst under supercritical conditions

Tedeeva

Kustov

Прибытков

et al. 2020

Mendeleev Communications

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Prospective principles of catalyst utilization using supercritical fluid media

Гумеров

Bilalov

Хайрутдинов

et al. 2021

IOP Conf. Ser.: Earth Environ. Sci.

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An overview of prospective principles of catalyst utilization using supercritical fluid media is presented. The processes in which these working media act as solvents and extractants, reagents and reaction media are considered. At the same time, we are talking about both heterogeneous catalysts and catalytic complexes dissolved in the water runoff of industrial enterprises. Using the LD-145 catalyst as an example, we studied the possibility of extending its service life instead of recycling, due to a change in the physical and chemical principles of its regeneration. We are talking about replacing the high-temperature process of vapor-air oxidation of catalyst-deactivating compounds with a supercritical fluid extraction process. At the same time, the extractant used is not widespread carbon dioxide, but propane/butane mixture, the use of which makes the process significantly more efficient. This is because a number of binary systems “deactivating compound – extractant” change the type of phase behavior from V-VI to I-II when changing carbon dioxide to propane/butane mixture. Thus, these systems, for example, involving naphthalene, phenol and some other substances in the supercritical fluid state fall outside the binodal of the binary system into the region of unlimited miscibility of components, which significantly increases the kinetics of the catalyst regeneration.

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The synthesis and regeneration of palladium catalysts with the use of supercritical carbon dioxide

Cited by 9 publications

References 9 publications

Synthesis of the Palladium Catalyst with the Supercritical СO2-Impregnation Method Realized in the Static Mode

Synthesis of the Palladium Catalyst with the Supercritical СO2-Impregnation Method Realized in the Static Mode

Dehydrogenation of propane in the presence of CO2 on Cr(3%)/SiO2 catalyst under supercritical conditions

Prospective principles of catalyst utilization using supercritical fluid media

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