Hydroconversion of n-heptane over bifunctional HZSM5 zeolites Influence of the metal concentration and distribution on the activity and selectivity

A. Lugstein; A. Jentys; H. Vinek

doi:10.1016/S0926-860X(97)00236-6

Hydroconversion of n-heptane over bifunctional HZSM5 zeolites Influence of the metal concentration and distribution on the activity and selectivity

A. Lugstein, A. Jentys, H. Vinek

Technical University of Vienna

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

43 Scopus citations

Abstract

The hydroconversion of n-heptane over HZSM5 and Co-, Ni-and PtHZSM5 was studied at 533 K and 20 bar total pressure. A bimolecular reaction pathway of n-heptane was found on HZSM5. In hydrogen atmosphere a direct hydrogenation of alkenes and a higher activity in comparison to He atmosphere was observed. 2-Methylhexane, propane and iso-butane were found as primary products over metal containing HZSM5 with minor amounts of methane and ethane over CoHZSM5, resulting from hydrogenolysis. The activity and selectivity of metal containing HZSM5 depends on the preparation method. It was found that catalysts prepared by solid state ion exchange showed the highest overall activity and the highest selectivity to isomerization.

Original language	English
Pages (from-to)	29-38
Number of pages	10
Journal	Applied Catalysis A: General
Volume	166
Issue number	1
DOIs	https://doi.org/10.1016/S0926-860X(97)00236-6
State	Published - 2 Jan 1998
Externally published	Yes

Keywords

Hydroconversion
Metal concentration
Solid state ion exchange
Zeolite
n-Heptane

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title = "Hydroconversion of n-heptane over bifunctional HZSM5 zeolites Influence of the metal concentration and distribution on the activity and selectivity",

abstract = "The hydroconversion of n-heptane over HZSM5 and Co-, Ni-and PtHZSM5 was studied at 533 K and 20 bar total pressure. A bimolecular reaction pathway of n-heptane was found on HZSM5. In hydrogen atmosphere a direct hydrogenation of alkenes and a higher activity in comparison to He atmosphere was observed. 2-Methylhexane, propane and iso-butane were found as primary products over metal containing HZSM5 with minor amounts of methane and ethane over CoHZSM5, resulting from hydrogenolysis. The activity and selectivity of metal containing HZSM5 depends on the preparation method. It was found that catalysts prepared by solid state ion exchange showed the highest overall activity and the highest selectivity to isomerization.",

keywords = "Hydroconversion, Metal concentration, Solid state ion exchange, Zeolite, n-Heptane",

author = "A. Lugstein and A. Jentys and H. Vinek",

note = "Funding Information: This work was supported by the “Fonds zur Forderung der Wissenschaftlichen Forschung” under project FWF P11749",

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doi = "10.1016/S0926-860X(97)00236-6",

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T1 - Hydroconversion of n-heptane over bifunctional HZSM5 zeolites Influence of the metal concentration and distribution on the activity and selectivity

AU - Lugstein, A.

AU - Jentys, A.

AU - Vinek, H.

N1 - Funding Information: This work was supported by the “Fonds zur Forderung der Wissenschaftlichen Forschung” under project FWF P11749

PY - 1998/1/2

Y1 - 1998/1/2

N2 - The hydroconversion of n-heptane over HZSM5 and Co-, Ni-and PtHZSM5 was studied at 533 K and 20 bar total pressure. A bimolecular reaction pathway of n-heptane was found on HZSM5. In hydrogen atmosphere a direct hydrogenation of alkenes and a higher activity in comparison to He atmosphere was observed. 2-Methylhexane, propane and iso-butane were found as primary products over metal containing HZSM5 with minor amounts of methane and ethane over CoHZSM5, resulting from hydrogenolysis. The activity and selectivity of metal containing HZSM5 depends on the preparation method. It was found that catalysts prepared by solid state ion exchange showed the highest overall activity and the highest selectivity to isomerization.

AB - The hydroconversion of n-heptane over HZSM5 and Co-, Ni-and PtHZSM5 was studied at 533 K and 20 bar total pressure. A bimolecular reaction pathway of n-heptane was found on HZSM5. In hydrogen atmosphere a direct hydrogenation of alkenes and a higher activity in comparison to He atmosphere was observed. 2-Methylhexane, propane and iso-butane were found as primary products over metal containing HZSM5 with minor amounts of methane and ethane over CoHZSM5, resulting from hydrogenolysis. The activity and selectivity of metal containing HZSM5 depends on the preparation method. It was found that catalysts prepared by solid state ion exchange showed the highest overall activity and the highest selectivity to isomerization.

KW - Hydroconversion

KW - Metal concentration

KW - Solid state ion exchange

KW - Zeolite

KW - n-Heptane

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U2 - 10.1016/S0926-860X(97)00236-6

DO - 10.1016/S0926-860X(97)00236-6

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SN - 0926-860X

VL - 166

SP - 29

EP - 38

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

IS - 1

ER -

Hydroconversion of n-heptane over bifunctional HZSM5 zeolites Influence of the metal concentration and distribution on the activity and selectivity

Abstract

Keywords

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