The calcination effects on Pt/HZSM-5 catalysts in the aromatization of propane

Authors
de Araujo, LRR Schmal, M
Citation
Lrr. De Araujo et M. Schmal, The calcination effects on Pt/HZSM-5 catalysts in the aromatization of propane, APP CATAL A, 203(2), 2000, pp. 275-284
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
APPLIED CATALYSIS A-GENERAL
ISSN journal
0926860X → ACNP
Volume
203
Issue
2
Year of publication
2000
Pages
275 - 284
Database
ISI
SICI code
0926-860X(20001016)203:2<275:TCEOPC>2.0.ZU;2-Q
Abstract
The influence of the calcination procedure on the catalytic activity of Pt/ HZSM-5 was investigated for propane aromatization. The TPR, CO chemisorptio n and XPS measurements showed significant differences due to the existence of different platinum species after calcination procedures and reduction st ep, that could explain the differences on catalytic behavior. High calcinat ion temperature promoted a great reduction of Pt+2 to Pt-0 and a surprising ly high dispersion, consistent with the increasing catalytic activity. (C) 2000 Elsevier Science B.V. All rights reserved.