Alkylation of aldehydes with methanol over titanium oxide catalysts |
| |
Authors: | Fey-long Wang Tan-feng Tsai Li-ching Yu In-zu Hu Yao-pin Yen |
| |
Affiliation: | (1) Department of Applied Chemistry, Providence University, Sha-Lu, 43301 Taichung Hsien, Taiwan, ROC |
| |
Abstract: | The methylation of various aldehydes, such as acetaldehyde, propionaldehyde, and phenylacetaldehyde over titanium oxidesupported vanadium oxide was studied under atmospheric pressure and temperatures of 250–400°C. The catalyst properties of titanium oxide can be enhanced only by addition of a fairly small amount of vanadium. High-temperature treatment transforms titanium oxide, the support, from anatase to rutile, which causes the catalysts to lose their catalytic properties. The reactivity of these can be ranked in the following order: acetaldehyde > propionaldehyde > phenylacetaldehyde. The steric effect of the substituted groups in propionaldehyde or phenylacetaldehyde may prevent self-condensation to form oligomers and to give a high selectivity of alkylated products. |
| |
Keywords: | alkylation acetaldehyde propionaldehyde phenylacetaldehyde methanol V/TiO2 |
本文献已被 SpringerLink 等数据库收录! |
|