Platinum—rhenium/alumina catalyst III. Mechanism of C6-ring hydrogenation/dehydrogenation reactions

Ayo, D.B.; Susu, Alfred A.

doi:10.1016/s0166-9834(00)80421-2

Cited by 12 publications

(6 citation statements)

References 6 publications

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“…The activity of the metallic function was studied by the cyclohexane dehydrogenation reaction . The reaction was carried out at 315 °C for 3 h, using a continuous flow reactor and 0.1 g of catalyst.…”

Section: Methodsmentioning

confidence: 99%

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts

Carvalho

Reyes

Pecchi

et al. 2001

Ind. Eng. Chem. Res.

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The influence of the solvent (water, acetone, and ethanol) used during alumina impregnation on the properties of Pt/Al2O3 and Pt−Sn/Al2O3 catalysts was studied. Catalysts were characterized by H2 chemisorption, TEM, temperature-programmed reduction, ammonia temperature-programmed desorption, UV−vis spectroscopy and cyclohexane dehydrogenation, n-pentane isomerization, and n-octane reforming reactions. It was found that the catalysts prepared in ethanol has the highest metallic dispersion. The results are explained considering the Pt−Sn complex stability in the different solvents used during the preparation. Pt/Al2O3 (acetone) is the most active catalyst for isomerization while the activity of Pt−Sn/Al2O3 catalysts decreases in the order ethanol > acetone > water. The selectivity to aromatic hydrocarbons is related to isomerization activity, but there also exits a competition between hydrocracking and dehydrocyclization.

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Section: Methodsmentioning

confidence: 99%

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts

Carvalho

Reyes

Pecchi

et al. 2001

Ind. Eng. Chem. Res.

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“…This can be accomplished by dehydrogenating naphthenes (cycloalkanes) or dehydrocyclizing paraffins. Both mono and bimetallic supported Pt catalysts have for some time played a prominent role in this process and have been the subject of intensive research in the last few years [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Dehydrogenation of cyclohexane over Pt/SiO2−AlPO4 catalysts, I. Influence of the catalyst particle size

Aramendía

Benítez

Boráu

et al. 1997

React Kinet Catal Lett

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“…The micrographs were obtained from extractive replica [3] in a Jeol model JEM-1200 EXII microscope. The metal function was evaluated in the cyclohexane dehydrogenation at 1 atm, 315,,C, WHSV=30 h -1 and hydrogen/cyclohexane (molar)=7 [4]. The acid function was evaluated in the n-hexane isomerization at 1 atm, 420~ WHSV=4.8h "1 and hydrogen/hydrocarbon (molar)=7 [5].…”

Section: Methodsmentioning

confidence: 99%

Silicon poisoning of Pt/Al2O3 catalysts in naphtha reforming

Souza

Reyes

Rangel

1999

Catalyst Deactivation 1999, Proceedings of the 8th International Symposium

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The silicon poisoning of a Pt/A120.~ catalyst was studied as a model system for industrial catalysts. Samples were contaminated using methyl-and phenylsubstituted polyoxysilane (MPSP) during the reforming of cyclohexane. It was found that silicon changes the chemisorption properties of platinum and does not affect its sinterization. However, coke has a more important effect in reducing the activity of the metallic function. On the other hand, silicon is harmful to the acid function, even in small amounts, suggesting that the poisoning is selective.

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Platinum—rhenium/alumina catalyst III. Mechanism of C6-ring hydrogenation/dehydrogenation reactions

Cited by 12 publications

References 6 publications

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts

Dehydrogenation of cyclohexane over Pt/SiO2−AlPO4 catalysts, I. Influence of the catalyst particle size

Silicon poisoning of Pt/Al2O3 catalysts in naphtha reforming

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Platinum—rhenium/alumina catalyst III. Mechanism of C6-ring hydrogenation/dehydrogenation reactions

Cited by 12 publications

References 6 publications

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al2O3 And Pt−Sn/Al2O3 Catalysts

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al2O3 And Pt−Sn/Al2O3 Catalysts

Dehydrogenation of cyclohexane over Pt/SiO2−AlPO4 catalysts, I. Influence of the catalyst particle size

Silicon poisoning of Pt/Al2O3 catalysts in naphtha reforming

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Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts

Effect Of The Solvent Used During Preparation On The Properties Of Pt/Al₂O₃ And Pt−Sn/Al₂O₃ Catalysts