PREPARATION OF SILICA-ALUMINA CATALYST BY THE SOL-GEL METHOD AND ITS ACTIVITY FOR THE DIELS-ALDER REACTION OF ISOPRENE AND ACRYLALDEHYDE

Authors
MATSUMOTO Y MITA K HASHIMOTO K TOKOROYAMA T
Citation
Y. Matsumoto et al., PREPARATION OF SILICA-ALUMINA CATALYST BY THE SOL-GEL METHOD AND ITS ACTIVITY FOR THE DIELS-ALDER REACTION OF ISOPRENE AND ACRYLALDEHYDE, Applied catalysis. A, General, 131(1), 1995, pp. 1-6
Citations number
23
Categorie Soggetti
Chemistry Physical","Environmental Sciences
Journal title
Applied catalysis. A, General → ACNP
ISSN journal
0926860X
Volume
131
Issue
1
Year of publication
1995
Pages
1 - 6
Database
ISI
SICI code
0926-860X(1995)131:1<1:POSCBT>2.0.ZU;2-C
Abstract
In the presence of 2-PrOH and oxalic acid, a porous silica-alumina has been prepared by the sol-gel method from Si(OEt)(4) and Al(NO3)(3) . 9H(2)O. The surface area, the average pore size, the pore volume and m ost importantly, the number of the acidic sires in the range of pK(a) less than or equal to -3.0 are greatly increased by the use of oxalic acid as the organic additive. The silica-alumina prepared by the new m ethod is found to catalyze the Diels-Alder reaction of isoprene and ac rylaldehyde efficiently, improving the yield and the regioselectivity.