The effect of support morphology on the activity of HZSM-5-supported molybdenum catalysts for the aromatization of methane

Alper Sarioǧlan; Ömer Tunç Savaşçi; Ayşe Erdem-Şenatalar; Alain Tuel; Gilbert Sapaly; Younès Ben Taârit

doi:10.1016/j.jcat.2006.10.005

The effect of support morphology on the activity of HZSM-5-supported molybdenum catalysts for the aromatization of methane

Alper Sarioǧlan, Ömer Tunç Savaşçi, Ayşe Erdem-Şenatalar^*, Alain Tuel, Gilbert Sapaly, Younès Ben Taârit

^*Corresponding author for this work

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

29 Citations (Scopus)

Abstract

The aromatization of methane was investigated over Mo₂C supported on several HZSM-5 zeolites with different morphologies and Si/Al ratios. X-ray diffraction, elemental analyses, X-ray photoelectron spectroscopy, ²⁷Al NMR spectroscopy, nitrogen adsorption, and scanning electron microscopy were used to characterize the supports. Support morphology was observed to play a crucial role in this reaction, which was studied under conditions in which actual rates could be compared. Although rates did not vary linearly either with the total number of the acid sites or with the external surface area, turnover frequencies of the surface acid sites, calculated using the Si/Al ratios determined from XPS measurements, were observed to vary linearly with the external surface area.

Original language	English
Pages (from-to)	35-39
Number of pages	5
Journal	Journal of Catalysis
Volume	246
Issue number	1
DOIs	https://doi.org/10.1016/j.jcat.2006.10.005
Publication status	Published - 15 Feb 2007
Externally published	Yes

Funding

A.S. acknowledges the funding provided by TUBITAK MRC via the World Bank Program, which covered all his expenses during his stay at Institut de Recherches sur la Catalyse, France.

Funders	Funder number
Institut de Recherches sur la Catalyse
TUBITAK MRC
World Bank Group

Keywords

Aromatization
External surface
Methane
Molybdenum
Morphology
Si/Al ratio

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10.1016/j.jcat.2006.10.005

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abstract = "The aromatization of methane was investigated over Mo2C supported on several HZSM-5 zeolites with different morphologies and Si/Al ratios. X-ray diffraction, elemental analyses, X-ray photoelectron spectroscopy, 27Al NMR spectroscopy, nitrogen adsorption, and scanning electron microscopy were used to characterize the supports. Support morphology was observed to play a crucial role in this reaction, which was studied under conditions in which actual rates could be compared. Although rates did not vary linearly either with the total number of the acid sites or with the external surface area, turnover frequencies of the surface acid sites, calculated using the Si/Al ratios determined from XPS measurements, were observed to vary linearly with the external surface area.",

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AU - Sarioǧlan, Alper

AU - Savaşçi, Ömer Tunç

AU - Erdem-Şenatalar, Ayşe

AU - Tuel, Alain

AU - Sapaly, Gilbert

AU - Ben Taârit, Younès

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N2 - The aromatization of methane was investigated over Mo2C supported on several HZSM-5 zeolites with different morphologies and Si/Al ratios. X-ray diffraction, elemental analyses, X-ray photoelectron spectroscopy, 27Al NMR spectroscopy, nitrogen adsorption, and scanning electron microscopy were used to characterize the supports. Support morphology was observed to play a crucial role in this reaction, which was studied under conditions in which actual rates could be compared. Although rates did not vary linearly either with the total number of the acid sites or with the external surface area, turnover frequencies of the surface acid sites, calculated using the Si/Al ratios determined from XPS measurements, were observed to vary linearly with the external surface area.

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The effect of support morphology on the activity of HZSM-5-supported molybdenum catalysts for the aromatization of methane

Abstract

Funding

Keywords

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