Effect of oxychlorination treatment on the regeneration of Pt?Sn/Al2O3 catalyst for propane dehydrogenation

Title
Effect of oxychlorination treatment on the regeneration of Pt?Sn/Al2O3 catalyst for propane dehydrogenation
Authors
정광덕김가희김원일엄병환신채호오경석고형림
Keywords
Propane dehydrogenation; Regeneration; Redispersion; Oxychlorination
Issue Date
2016-01
Publisher
Research on chemical intermediates
Citation
VOL 42, NO 1, 351-365
Abstract
Propane dehydrogenation and regeneration of Pt– Sn/θ-Al2O3 catalysts was evaluated with oxychlorination treatment. It was observed that the catalytic activity was not fully recovered after coke burning followed by hydrogen reduction process because of the unsatisfying recovery of Pt sintering. In this study, oxychlorination treatment was additionally employed between coke burning and hydrogen reduction. Oxychlorination used diluted HCl at the range of 625– 7000 ppm. The best recovery of catalytic activity was achieved at the HCl concentration of 5000 ppm. The effective redispersion of Pt was also examined by CO chemisorption, XRD, XPS, CHSN analysis, and STEM.
URI
http://pubs.kist.re.kr/handle/201004/59237
ISSN
09226168
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KIST Publication > Article
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