Effect of alkali and transition metal cations-modified-ZSM-5 catalysts in oxidative dehydrogenation of propane to propylene

Abdulaziz Y. Atta, Sulaiman M. Shuwa, Jamil T. Naser, Baba Y. Jibril

Research output: Contribution to journalArticle

Abstract

In this work, ZSM-5 modified with lithium, potassium, caesium, chromium and molybdenum were produced by solid state reaction and their respective catalytic properties were investigated using a laboratory fixed bed reactor in oxidative dehydrogenation of propane to propylene. The results showed that the incorporation of the metals influenced the conversion of propane and the selectivity to propylene due to their adjustments of the catalyst's acidity and led to a reduction in average pore diameter and pore volume. However, the crystalline structure of the original parent zeolite was not strongly affected by the presence of the metals as observed from the XRD and FTIR analyses. Li-ZSM-5 showed the highest selectivity to propylene and low conversion of propane. Mo-ZSM-5 showed good activity and reasonable selectivity at both low and high temperatures of the reaction (70 % selectivity and 43 % conversion). All the catalysts tested showed good activity and reasonable selectivity at the highest temperature of the reaction.

Original languageEnglish
Pages (from-to)307-312
Number of pages6
JournalAsian Journal of Chemistry
Volume27
Issue number1
DOIs
Publication statusPublished - 2015

Fingerprint

Propane
Alkali metals
Dehydrogenation
Transition metals
Cations
Catalyst selectivity
Catalysts
Metals
Zeolites
Cesium
Molybdenum
Chromium
Solid state reactions
Lithium
Acidity
Catalyst activity
Potassium
Crystalline materials
Temperature
propylene

Keywords

  • Oxidative dehydrogenation
  • Propane
  • Propylene
  • Selectivity

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Effect of alkali and transition metal cations-modified-ZSM-5 catalysts in oxidative dehydrogenation of propane to propylene. / Atta, Abdulaziz Y.; Shuwa, Sulaiman M.; Naser, Jamil T.; Jibril, Baba Y.

In: Asian Journal of Chemistry, Vol. 27, No. 1, 2015, p. 307-312.

Research output: Contribution to journalArticle

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AU - Shuwa, Sulaiman M.

AU - Naser, Jamil T.

AU - Jibril, Baba Y.

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AB - In this work, ZSM-5 modified with lithium, potassium, caesium, chromium and molybdenum were produced by solid state reaction and their respective catalytic properties were investigated using a laboratory fixed bed reactor in oxidative dehydrogenation of propane to propylene. The results showed that the incorporation of the metals influenced the conversion of propane and the selectivity to propylene due to their adjustments of the catalyst's acidity and led to a reduction in average pore diameter and pore volume. However, the crystalline structure of the original parent zeolite was not strongly affected by the presence of the metals as observed from the XRD and FTIR analyses. Li-ZSM-5 showed the highest selectivity to propylene and low conversion of propane. Mo-ZSM-5 showed good activity and reasonable selectivity at both low and high temperatures of the reaction (70 % selectivity and 43 % conversion). All the catalysts tested showed good activity and reasonable selectivity at the highest temperature of the reaction.

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