Effect of promoters on catalytic performance of Cr/SiO2 catalysts in oxidative dehydrogenation of ethane with carbon dioxide

Authors
Wang, SB Murata, K Hayakawa, T Hamakawa, S Suzuki, K
Citation
Sb. Wang et al., Effect of promoters on catalytic performance of Cr/SiO2 catalysts in oxidative dehydrogenation of ethane with carbon dioxide, CATAL LETT, 73(2-4), 2001, pp. 107-111
Citations number
9
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
CATALYSIS LETTERS
ISSN journal
1011372X → ACNP
Volume
73
Issue
2-4
Year of publication
2001
Pages
107 - 111
Database
ISI
SICI code
1011-372X(2001)73:2-4<107:EOPOCP>2.0.ZU;2-S
Abstract
Several acidic and basic oxide promoted Cr/SiO2 catalysts were prepared and investigated in oxidative dehydrogenation of ethane in the presence of car bon dioxide. The effects of SO42-. WO3 and alkali metal oxides (Li2O, Na2O, and K2O) on the catalytic activity were studied. It is found that sulfatio n of silica produces a positive effect on ethane conversion and ethylene yi eld while tungstation and addition of strong basic promoters (alkali metal oxides) suppress the catalytic activity. Characterization indicates that th e varying activity of the promoted catalysts can be attributed to the diffe rence in acid/base property and redox potential.