Selective hydrogenation of propyne over supported copper catalysts: influence of support

J. T. Wehrli; D. J. Thomas; M. S. Wainwright; D. L. Trimm; N. W. Cant

doi:10.1016/S0166-9834(00)84168-8

Selective hydrogenation of propyne over supported copper catalysts: influence of support

J. T. Wehrli^*, D. J. Thomas, M. S. Wainwright, D. L. Trimm, N. W. Cant

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

The selective hydrogenation of propyne over copper powder and various supported copper catalysts has been examined in a dynamic flow system. Increased hydrogenation activities were found for supported copper catalysts, where for example, the turnover frequency over an ion-exchanged Cu/SiO2 catalyst was 3.5·10-2 s-1 at 140°C as compared to 1.1·10-3 s-1 over unsupported copper powder. The increased selectivity to propene with increasing temperature was found to be a general property of all copper catalysts. However, the exact pattern of activity and selectivity was found to depend upon the particular supported copper system. Deactivation was found to depend on the acidity of the support and the dispersion of copper. Overall, the most active and selective catalysts that deactivate least were copper on silica prepared by the ion-exchange technique and copper on magnesia.

Original language	English
Pages (from-to)	253-262
Number of pages	10
Journal	Applied Catalysis
Volume	70
Issue number	1
DOIs	https://doi.org/10.1016/S0166-9834(00)84168-8
Publication status	Published - 1991

Keywords

ageing
alkynes
copper
kinetics.
propyne hydrogenation
support effects

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10.1016/S0166-9834(00)84168-8

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title = "Selective hydrogenation of propyne over supported copper catalysts: influence of support",

abstract = "The selective hydrogenation of propyne over copper powder and various supported copper catalysts has been examined in a dynamic flow system. Increased hydrogenation activities were found for supported copper catalysts, where for example, the turnover frequency over an ion-exchanged Cu/SiO2 catalyst was 3.5·10-2 s-1 at 140°C as compared to 1.1·10-3 s-1 over unsupported copper powder. The increased selectivity to propene with increasing temperature was found to be a general property of all copper catalysts. However, the exact pattern of activity and selectivity was found to depend upon the particular supported copper system. Deactivation was found to depend on the acidity of the support and the dispersion of copper. Overall, the most active and selective catalysts that deactivate least were copper on silica prepared by the ion-exchange technique and copper on magnesia.",

keywords = "ageing, alkynes, copper, kinetics., propyne hydrogenation, support effects",

author = "Wehrli, {J. T.} and Thomas, {D. J.} and Wainwright, {M. S.} and Trimm, {D. L.} and Cant, {N. W.}",

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T1 - Selective hydrogenation of propyne over supported copper catalysts

T2 - influence of support

AU - Wehrli, J. T.

AU - Thomas, D. J.

AU - Wainwright, M. S.

AU - Trimm, D. L.

AU - Cant, N. W.

PY - 1991

Y1 - 1991

N2 - The selective hydrogenation of propyne over copper powder and various supported copper catalysts has been examined in a dynamic flow system. Increased hydrogenation activities were found for supported copper catalysts, where for example, the turnover frequency over an ion-exchanged Cu/SiO2 catalyst was 3.5·10-2 s-1 at 140°C as compared to 1.1·10-3 s-1 over unsupported copper powder. The increased selectivity to propene with increasing temperature was found to be a general property of all copper catalysts. However, the exact pattern of activity and selectivity was found to depend upon the particular supported copper system. Deactivation was found to depend on the acidity of the support and the dispersion of copper. Overall, the most active and selective catalysts that deactivate least were copper on silica prepared by the ion-exchange technique and copper on magnesia.

AB - The selective hydrogenation of propyne over copper powder and various supported copper catalysts has been examined in a dynamic flow system. Increased hydrogenation activities were found for supported copper catalysts, where for example, the turnover frequency over an ion-exchanged Cu/SiO2 catalyst was 3.5·10-2 s-1 at 140°C as compared to 1.1·10-3 s-1 over unsupported copper powder. The increased selectivity to propene with increasing temperature was found to be a general property of all copper catalysts. However, the exact pattern of activity and selectivity was found to depend upon the particular supported copper system. Deactivation was found to depend on the acidity of the support and the dispersion of copper. Overall, the most active and selective catalysts that deactivate least were copper on silica prepared by the ion-exchange technique and copper on magnesia.

KW - ageing

KW - alkynes

KW - copper

KW - kinetics.

KW - propyne hydrogenation

KW - support effects

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DO - 10.1016/S0166-9834(00)84168-8

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VL - 70

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JO - Applied Catalysis

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IS - 1

ER -

Selective hydrogenation of propyne over supported copper catalysts: influence of support

Abstract

Keywords

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