Influence of feed water vapour on the selective oxidation of ethylene over silver catalyst

Liu, W.; Eliyas, A.; Petrov, L.

doi:10.1016/s0166-9834(00)82149-1

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…Both reaction rates go through a maximum respect to the ethylene partial pressure, and value of the latter where the maximum occurs depends on the oxygen partial pressure. , The same effect is also reported for oxygen partial pressure . In addition, several studies have shown that all product species can inhibit both reactions, − but the reported results are sometimes contradictory.…”

Section: Review Of Kinetic Models Available In the Literaturementioning

confidence: 57%

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Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

Lafarga

Al-Juaied

Bondy

et al. 2000

Ind. Eng. Chem. Res.

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The kinetics of ethylene epoxidation network were studied experimentally over a cesium-doped silver catalyst supported on α-Al2O3 pellets in a differential reactor. A variety of rate functions were considered and among these, expressions based on a dual-site Langmuir−Hinselwood mechanism: r i = k i P E /(1 + P E)2, fitted the data best with an average error of 13.0 and 10.7% for the epoxidation and the complete combustion reactions, respectively. Under the experimental conditions, both reactants influence both reaction rates; however, product influence is negligible because of their small partial pressures present in the reactor. High oxygen/ethylene ratios and lower temperature favored selectivity to the epoxidation reaction. The kinetic parameters obtained from the differential reactor experiments were refined to match the fixed-bed reactor experiments. With this, the average error in predicting both ethylene conversion and selectivity to ethylene oxide was 4.3%. The apparent activation energies for the epoxidation and combustion reactions were 60.7 and 73.2 kJ/mol, respectively.

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Section: Review Of Kinetic Models Available In the Literaturementioning

confidence: 57%

“…14,15 The same effect is also reported for oxygen partial pressure. 16 In addition, several studies have shown that all product species can inhibit both reactions, [16][17][18][19] but the reported results are sometimes contradictory.…”

Section: Review Of Kinetic Models Available In the Literaturementioning

confidence: 99%

Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

Lafarga

Al-Juaied

Bondy

et al. 2000

Ind. Eng. Chem. Res.

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“…Water is reported by Metcalf and Harriot (1972) to inhibit both reactions equally strong. Recently Liu et al (1990) reported that water inhibits epoxidation and promotes the complete combustion.…”

Section: Literaturementioning

confidence: 99%

An Experimental Study of the Kinetics of the Selective Oxidation of Ethene over a Silver on .alpha.-Alumina Catalyst

Borman¹,

Westerterp²

1995

Ind. Eng. Chem. Res.

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“…The kinetic models for selective and total oxidation of ethylene in the presence of DCE [15][16][17][18][19]…”

Section: Catalytic Processes On Intentionally Poisoned Catalystsmentioning

confidence: 99%

“…A detailed kinetic study of the process of ethylene oxidation to ethylene oxide in the presence of dichoroethane has been presented in Refs. [15][16][17][18][19].…”

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confidence: 99%

Reaction Mechanism and Deactivation Modes of Heterogeneous Catalytic Systems

Kumbilieva¹,

Petrov²,

Alhamed³

et al. 2011

Chinese Journal of Catalysis

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Influence of feed water vapour on the selective oxidation of ethylene over silver catalyst

Cited by 9 publications

References 13 publications

Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

An Experimental Study of the Kinetics of the Selective Oxidation of Ethene over a Silver on .alpha.-Alumina Catalyst

Reaction Mechanism and Deactivation Modes of Heterogeneous Catalytic Systems

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Influence of feed water vapour on the selective oxidation of ethylene over silver catalyst

Cited by 9 publications

References 13 publications

Ethylene Epoxidation on Ag-Cs/α-Al2O3Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

Ethylene Epoxidation on Ag-Cs/α-Al2O3Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

An Experimental Study of the Kinetics of the Selective Oxidation of Ethene over a Silver on .alpha.-Alumina Catalyst

Reaction Mechanism and Deactivation Modes of Heterogeneous Catalytic Systems

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Product

Resources

About

Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination

Ethylene Epoxidation on Ag-Cs/α-Al₂O₃Catalyst: Experimental Results and Strategy for Kinetic Parameter Determination