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E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts

Alumina-supported Re, Pt and PtÈRe catalysts have been used to catalyse reactions of heptaneÈH mixtures as 2 a probe of sulfur-free PtÈRe/Al catalyst structure after a series of pretreatments involving 2O3 oxidationÈreduction and oxychlorinationÈreduction regeneration cycles. Catalyst activities and...

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Main Authors: Chong, Fai Kait, Anderson, James A., Rochester, C.H.
Format: Citation Index Journal
Published: 2000
Subjects:
QD Chemistry
Online Access:http://eprints.utp.edu.my/4815/1/Eff%C2%86ects_of_regeneration_cycles_on_heptane%C2%96_-_H2_reactions_over_Pt%C2%96ReAl2O3_catalysts.pdf
http://eprints.utp.edu.my/4815/
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spelling my.utp.eprints.48152017-01-19T08:27:43Z E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts Chong, Fai Kait Anderson, James A. Rochester, C.H. QD Chemistry Alumina-supported Re, Pt and PtÈRe catalysts have been used to catalyse reactions of heptaneÈH mixtures as 2 a probe of sulfur-free PtÈRe/Al catalyst structure after a series of pretreatments involving 2O3 oxidationÈreduction and oxychlorinationÈreduction regeneration cycles. Catalyst activities and selectivities for aromatization, cyclization, hydrogenolysis and isomerization reactions are discussed in relation to CO and H2 chemisorption, IR and X-ray absorption near-edge spectroscopy (XANES) data and were consistent with alloying of Pt and Re with Re surface enrichment on the alloy particles. Surface enrichment of Re was greater in the absence rather than the presence of Cl in the catalyst pretreatment. Both oxidationÈreduction and oxychlorinationÈreduction completely removed deposited coke from used catalysts but the addition of Cl maintained higher metal surface area and catalytic activity. 2000 Citation Index Journal PeerReviewed application/pdf http://eprints.utp.edu.my/4815/1/Eff%C2%86ects_of_regeneration_cycles_on_heptane%C2%96_-_H2_reactions_over_Pt%C2%96ReAl2O3_catalysts.pdf Chong, Fai Kait and Anderson, James A. and Rochester, C.H. (2000) E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts. [Citation Index Journal] http://eprints.utp.edu.my/4815/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Chong, Fai Kait
Anderson, James A.
Rochester, C.H.
E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
description Alumina-supported Re, Pt and PtÈRe catalysts have been used to catalyse reactions of heptaneÈH mixtures as 2 a probe of sulfur-free PtÈRe/Al catalyst structure after a series of pretreatments involving 2O3 oxidationÈreduction and oxychlorinationÈreduction regeneration cycles. Catalyst activities and selectivities for aromatization, cyclization, hydrogenolysis and isomerization reactions are discussed in relation to CO and H2 chemisorption, IR and X-ray absorption near-edge spectroscopy (XANES) data and were consistent with alloying of Pt and Re with Re surface enrichment on the alloy particles. Surface enrichment of Re was greater in the absence rather than the presence of Cl in the catalyst pretreatment. Both oxidationÈreduction and oxychlorinationÈreduction completely removed deposited coke from used catalysts but the addition of Cl maintained higher metal surface area and catalytic activity.
format Citation Index Journal
author Chong, Fai Kait
Anderson, James A.
Rochester, C.H.
author_facet Chong, Fai Kait
Anderson, James A.
Rochester, C.H.
author_sort Chong, Fai Kait
title E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
title_short E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
title_full E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
title_fullStr E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
title_full_unstemmed E�ects of regeneration cycles on heptane�H2 reactions over Pt�Re/Al2O3 catalysts
title_sort e�ects of regeneration cycles on heptane�h2 reactions over pt�re/al2o3 catalysts
publishDate 2000
url http://eprints.utp.edu.my/4815/1/Eff%C2%86ects_of_regeneration_cycles_on_heptane%C2%96_-_H2_reactions_over_Pt%C2%96ReAl2O3_catalysts.pdf
http://eprints.utp.edu.my/4815/
_version_ 1738655371911757824
score 13.235796

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