Characterization of acidic properties of sulfated zeolite Beta

C. Woltz; A. Jentys; J. A. Lercher

doi:10.1016/s0167-2991(05)80536-1

Characterization of acidic properties of sulfated zeolite Beta

C. Woltz, A. Jentys, J. A. Lercher

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Treatment of Pt loaded zeolite Beta with H₂S and subsequent oxidation led to the formation of additional Brønsted acidic sites, which were identified as surface sulfate species and were active for the pentane hydroisomerization. Temperature programmed desorption of ammonia and infrared studies during adsorption of Pyridine showed that acid strength and accessibility of the acid sites were not affected after sulfation. The concentration of Brønsted acidic sites for the untreated and samples sulfated at moderate temperature correlate with the isomerization activity, indicating that the reaction is limited by the acid sites and, therefore, can be enhanced by the introduction of Brønsted acidic sulfate groups.

Original language	English
Pages (from-to)	1763-1770
Number of pages	8
Journal	Studies in Surface Science and Catalysis
Volume	158 B
DOIs	https://doi.org/10.1016/s0167-2991(05)80536-1
State	Published - 2005

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@article{8a4450973a16493087b5a77d90c300cb,

title = "Characterization of acidic properties of sulfated zeolite Beta",

abstract = "Treatment of Pt loaded zeolite Beta with H2S and subsequent oxidation led to the formation of additional Br{\o}nsted acidic sites, which were identified as surface sulfate species and were active for the pentane hydroisomerization. Temperature programmed desorption of ammonia and infrared studies during adsorption of Pyridine showed that acid strength and accessibility of the acid sites were not affected after sulfation. The concentration of Br{\o}nsted acidic sites for the untreated and samples sulfated at moderate temperature correlate with the isomerization activity, indicating that the reaction is limited by the acid sites and, therefore, can be enhanced by the introduction of Br{\o}nsted acidic sulfate groups.",

author = "C. Woltz and A. Jentys and Lercher, \{J. A.\}",

note = "Funding Information: The work is financially supported by the Bundesministerium ffir Bildung und Forschung Project (BMBF:03C0307D).",

year = "2005",

doi = "10.1016/s0167-2991(05)80536-1",

language = "English",

volume = "158 B",

pages = "1763--1770",

journal = "Studies in Surface Science and Catalysis",

issn = "0167-2991",

publisher = "Elsevier Inc.",

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TY - JOUR

T1 - Characterization of acidic properties of sulfated zeolite Beta

AU - Woltz, C.

AU - Jentys, A.

AU - Lercher, J. A.

N1 - Funding Information: The work is financially supported by the Bundesministerium ffir Bildung und Forschung Project (BMBF:03C0307D).

PY - 2005

Y1 - 2005

N2 - Treatment of Pt loaded zeolite Beta with H2S and subsequent oxidation led to the formation of additional Brønsted acidic sites, which were identified as surface sulfate species and were active for the pentane hydroisomerization. Temperature programmed desorption of ammonia and infrared studies during adsorption of Pyridine showed that acid strength and accessibility of the acid sites were not affected after sulfation. The concentration of Brønsted acidic sites for the untreated and samples sulfated at moderate temperature correlate with the isomerization activity, indicating that the reaction is limited by the acid sites and, therefore, can be enhanced by the introduction of Brønsted acidic sulfate groups.

AB - Treatment of Pt loaded zeolite Beta with H2S and subsequent oxidation led to the formation of additional Brønsted acidic sites, which were identified as surface sulfate species and were active for the pentane hydroisomerization. Temperature programmed desorption of ammonia and infrared studies during adsorption of Pyridine showed that acid strength and accessibility of the acid sites were not affected after sulfation. The concentration of Brønsted acidic sites for the untreated and samples sulfated at moderate temperature correlate with the isomerization activity, indicating that the reaction is limited by the acid sites and, therefore, can be enhanced by the introduction of Brønsted acidic sulfate groups.

UR - https://www.scopus.com/pages/publications/30844439876

U2 - 10.1016/s0167-2991(05)80536-1

DO - 10.1016/s0167-2991(05)80536-1

M3 - Article

AN - SCOPUS:30844439876

SN - 0167-2991

VL - 158 B

SP - 1763

EP - 1770

JO - Studies in Surface Science and Catalysis

JF - Studies in Surface Science and Catalysis

ER -

Characterization of acidic properties of sulfated zeolite Beta

Abstract

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