Dehydrogenation of isopropanol on a modified copper catalyst

Platonov, E. A.; Galimova, N. A.; Pskhu, Z. V.; Yagodovskii, V. D.

doi:10.1134/s0036024412020227

Cited by 4 publications

(3 citation statements)

References 5 publications

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“…A silica gel sample was impregnated with a copper chloride solution or a mixture of copper chlo ride and cerium nitrate solutions. The samples were dried at 333 K and subjected to stepwise reduction in an Н 2 flow for 30 min at 373, 433, 573, and 633 K. The conditions of treatment of catalyst samples in glow discharge plasma are described in [1].…”

Section: Methodsmentioning

confidence: 99%

“…It was found that the preliminary treatment of the catalyst with glow discharge plasma in hydrogen, oxygen, and argon and the addition of cerium to the copper catalyst led to an increase in its activity [1]. It was interesting to study the structural changes caused by these treat ments in metal particles by X ray diffraction analysis (XRD) and assess their role in the catalytic process.…”

Section: Introductionmentioning

confidence: 99%

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Effects of plasmochemical treatments and cerium additions on the structural characteristics and activity of copper catalyst particles in isopropanol dehydrogenation

Platonov

Лобанов

Galimova

et al. 2012

Russ. J. Phys. Chem.

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The effect of the treatment of the 5 wt % Cu/SiO 2 (I) and (5 wt % Cu + 0.5 wt % Ce)/SiO 2 (II) catalysts with glow discharge plasma in O 2 , H 2 , and Ar on their structural characteristics was studied by X ray phase analysis; the influence of cerium additions and plasmochemical treatments on the catalyst activity in isopropanol dehydrogenation was also investigated. Under the plasmochemical treatment, the diameters of Cu particles in catalyst I nearly doubled and microstresses in the metal particles also changed. Catalyst II was X ray amorphous both before and after plasmochemical treatments. The activity of I after plasmochemical treatment increased because of the increase in the number of centers and changes in their composition. Growth of the activity of I compared with the activity of II was explained by the formation of new catalytic centers due to positive charging of the Ce +α adatom on the surface of the copper particle.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of plasmochemical treatments and cerium additions on the structural characteristics and activity of copper catalyst particles in isopropanol dehydrogenation

Platonov

Лобанов

Galimova

et al. 2012

Russ. J. Phys. Chem.

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“…The changes in the isosteric heat and entropy of adsorption induced by plasma and the changes in the characteristics of isotherms of adsorption suggest that plasma-chemical treatment might also affect the catalytic activity of oxides. This has been observed in the dehydrogenation of cyclohexane and isopropanol on metals such as Pt, Co, Ni, and Cu supported on silicon dioxide [11][12][13][14]. The aim of this work was to investigate the effect the plasma-chemical treatment of ZnO and NiO oxides has on their activity in the dehydrogenation of isopropanol.…”

Section: Introductionmentioning

confidence: 99%

Effect of the plasma-chemical treatment of ZnO and NiO on their activity in the dehydrogenation of isopropanol

Danilova

Пылинина

Platonov

et al. 2015

Russ. J. Phys. Chem.

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Treating ZnO and NiO oxides with glow discharge oxygen plasma and high-frequency argon plasma is found to affect the catalytic activity of these oxides in the dehydrogenation reaction of isopropanol, leading to an increase in the conversion of alcohol and the yield of acetone. The increased activity of ZnO is due to the high number of acid sites induced by plasma-chemical treatment. With NiO, the increased activity results from the formation of new, more active sites with low experimental activation energy, rather than a change in the surface acidity.

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