Accession Number:
ADA113878
Title:
Photoassisted Water-Gas Shift Reaction on Platinized Titania: The Influence of Preparation Parameters.
Descriptive Note:
Technical rept. no. 22, 1 Jan-31 Dec 82,
Corporate Author:
TEXAS UNIV AT AUSTIN DEPT OF CHEMISTRY
Personal Author(s):
Report Date:
1982-04-12
Pagination or Media Count:
16.0
Abstract:
The variation of the rate of the photoassisted water-gas shift reaction over platinized titania with changes in catalyst preparation has been studied - The following parameters were varied 1 extent of hydrogen reduction 2 Pt loading 3 method of depositing Pt 4 light intensity and 5 NaOH loading. The reaction rate does not depend on the method of Pt deposition is first order in light intensity is not dependent on the chemical state or the Pt loading above 2 wt. depends on reduction of the titania and is strongly dependent on the surface concentration of NaOH. From this work, we conclude that when NaOH is present, the rate limiting step in the reaction is the reaction of photoproduced holes with surface OH- ions. Author
Descriptors:
Subject Categories:
- Radiation and Nuclear Chemistry