ISSN:
1572-879X
Keywords:
molybdenum carbide
;
turnover rates
;
cumene hydrogenation
;
CO and O2 chemisorption
;
active site density
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The use of CO and O2 chemisorption to titrate surface sites on β-Mo2C was examined using cumene (isopropylbenzene) hydrogenation as a test reaction. The tests were carried out using β-Mo2C samples prepared at two different temperatures so as to deposit different amounts of pyrolytic carbon on their surfaces. Synthesis at 961 K produced a surface that was substantially free of pyrolytic carbon (90% clean), while synthesis at 981 K produced a surface that was contaminated with carbon (25% clean). It was found that O2 uptakes were about six times higher than CO uptakes, but both gave consistent turnover rates for the reaction.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1019062925008
Permalink
