A moment technique for adsorption rate on metal surfaces of supported catalysts CO adsorption on Pt-Al2O3 washcoated monolith

Dogu G., Ozkan G., Dogu T.

CHEMICAL ENGINEERING JOURNAL, vol.84, no.3, pp.429-435, 2001 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 84 Issue: 3
  • Publication Date: 2001
  • Doi Number: 10.1016/s1385-8947(00)00270-9
  • Journal Name: CHEMICAL ENGINEERING JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.429-435
  • Middle East Technical University Affiliated: No

Abstract

A moment technique was developed for the investigation of adsorption on metal surfaces of supported catalysts. The technique was applied to the evaluation of adsorption rate parameters of CO on a Pt-Al2O3 washcoated monolith. The adsorption rate constants evaluated in the temperature range 273-316 K showed significant decrease with an increase in surface coverage. Results of pulse response experiments corresponding to zero coverage gave the apparent activation energy for adsorption as 21 kJ/mol. This method allowed the evaluation of adsorption rate constant on metal sw-faces at different coverages. (C) 2001 Elsevier Science B.V. All rights reserved.