Chemisorption and catalysis of zeolite-entrapped palladium

✍ Scribed by S. T. Homeyer; Z. Karpiński; W. M. H. Sachtler

• Book ID: 104589142
• Publisher: Elsevier Science
• Year: 2010
• Tongue: English
• Weight: 675 KB
• Volume: 109
• Category: Article
• ISSN: 0165-0513
• DOI: 10.1002/recl.19901090210

✦ Synopsis

Abstract

The chemisorption of H~2~ and of CO and the catalysis of neopentane conversion have been studied on two groups of Y‐zeolite‐supported Pd samples. One group was prepared under conditions which result in the formation of “grape‐shaped” Pd particles filling adjacent supercages. In the second group, pretreatment conditions were chosen which yield isolated Pd particles of the size of the supercages. Both groups of Pd/NaY samples differ in adsorption of H~2~ and CO; the CO~ads~/H~ads~ ratios are in agreement with the different particle morphologies. The selectivity of neopentane conversion does not detectable depend on Pd morphology; however, the activation energy for reaction is significantly higher for the samples of the first group.