Skip to main content
SpringerLink
Log in

Triply‐promoted ethene epoxidation: NOx promotion of the Ag‐catalysed reaction in the presence of alkali and chlorine under electrochemical control

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

Potassium, electrochemically supplied from K β"‐alumina to a silver thin film catalyst in the presence of ppm levels of NOx, strongly promotes the selectivity of ethene epoxidation. However, in the absence of gaseous NOx, alkali catastrophically suppresses both activity and selectivity. Addition of surface chlorine via ppm levels of ethylene dichloride further enhances the promotional effect of alkali + NO yielding the highest selectivity of all. The minimum necessary and sufficient conditions for the appearance of NOx promotion are submonolayer quantities of alkali on the metal surface, and ppm levels of gaseous NOx.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. R.B. Grant and R.M. Lambert, Langmuir 1 (1985) 29.

    Article  CAS  Google Scholar 

  2. J.G. Serafin, A.C. Liu and S.R. Seyedmonir, J. Mol. Catal. A 131 (1998) 157.

    Article  CAS  Google Scholar 

  3. P. Hayden, R.C. Clayton, J.R. Bamforth and A.F.G. Cope, Eur. Patent 003642A2 (1980) to ICI.

  4. D.W. Johnson, Eur. Patent No. 0 119 710 (1984) to ICI.

  5. P. Hayden, Eur. Patent No. 0 176 253 (1986) to ICI.

  6. M. Nakajima, H. Kuboyama, T. Komiyama and K. Yoshida, GB Patent No. 2 161 480 A (1986) to Mitsui Toatsu Chemicals.

  7. C.G. Vayenas, S. Bebelis, I.V. Yentekakis and H.-G. Lintz, Catal. Today 11 (1992) 303.

    Article  CAS  Google Scholar 

  8. F.J. Williams, A. Palermo, M.S. Tikhov and R.M. Lambert, J. Phys. Chem. B 104 (2000) 615.

    Article  CAS  Google Scholar 

  9. Ch. Karavasilis, S. Bebelis and C.G. Vayenas, J. Catal. 160 (1996) 205.

    Article  Google Scholar 

  10. S. Tracey, A. Palermo, J.P. Holgado Vazquez and R.M. Lambert, J. Catal. 179 (1998) 231.

    Article  CAS  Google Scholar 

  11. I.R. Harkness, C. Hardacre, R.M. Lambert, I.V. Yentekakis and C.G. Vayenas, J. Catal. 160 (1996) 19.

    Article  CAS  Google Scholar 

  12. R.A. van Santen and H.P.C.E. Kuipers, in: Adv. Catal., Vol. 35 (Academic Press, London, 1987) p. 265.

    Google Scholar 

  13. R.B. Grant and R.M. Lambert, J. Catal. 92 (1985) 364.

    Article  CAS  Google Scholar 

  14. J.W. Woodward, R.G. Lindgren and W.H. Corcoran, J. Catal. 25 (1972) 292.

    Article  CAS  Google Scholar 

  15. N.C. Filkin, M.S. Tikhov, A. Palermo and R.M. Lambert, J. Phys. Chem. B 103 (1999) 2680.

    Article  CAS  Google Scholar 

  16. F.J. Williams, A. Palermo, M.S. Tikhov and R.M. Lambert, J. Phys. Chem. B 103 (1999) 9960.

    Article  CAS  Google Scholar 

  17. W.J. Wytenburg, R.M. Ormerod, K.L. Peat and R.M. Lambert, Surf. Sci. 269/270 (1992) 506.

    Article  Google Scholar 

  18. M. Kitson and R.M. Lambert, Surf. Sci. 110 (1981) 205.

    Article  CAS  Google Scholar 

Download references

Authors
  1. Alejandra Palermo
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Alifiya Husain
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Richard M. Lambert
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Palermo, A., Husain, A. & Lambert, R.M. Triply‐promoted ethene epoxidation: NOx promotion of the Ag‐catalysed reaction in the presence of alkali and chlorine under electrochemical control. Catalysis Letters 69, 175–179 (2000). https://doi.org/10.1023/A:1019026124235

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1019026124235

Search

Navigation