Ruthenium containing hydrotalcite as a heterogeneous catalyst for hydrogenation of benzene to cyclohexane

Sumeet Kumar Sharma, Kalpesh B Sidhpuria, Raksh V Jasra

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Abstract

Ruthenium containing hydrotalcite (Ru-HT) was synthesized by partial substitution of Mg2+ or Al3+ cations by ruthenium metal in octahedral layers of hydrotalcite and used as a catalyst for hydrogenation of benzene to cyclohexane. Effect of catalyst amount, reaction temperature, partial pressure of hydrogen and volume of solvent on conversion of benzene was studied in detail. Higher conversion of benzene in lower reaction time was observed in lower volume of solvent. Complete conversion of benzene with 100% selectivity of cyclohexane was observed at 120 C reaction temperature and 60 atm partial pressure of H2 in 2 h reaction time. Presence of moisture in the reaction mixture showed negligible effect on catalytic activity of Ru-HT, however, activity decreased significantly on increasing the sulfur concentration. Catalyst was recycled upto four times without significant loss in its activity. No conversion of benzene was observed in case of pristine hydrotalcite (without ruthenium) as a catalyst. 2010 Elsevier B.V.
Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalJournal of Molecular Catalysis A: Chemical
Volume335
Issue number1-2
DOIs
Publication statusPublished - 1 Feb 2011

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hydrotalcite
Ruthenium
Cyclohexane
Benzene
cyclohexane
ruthenium
Hydrogenation
hydrogenation
benzene
catalysts
Catalysts
reaction time
Partial pressure
partial pressure
Sulfur
moisture
catalytic activity
Cations
Hydrogen
Catalyst activity

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Ruthenium containing hydrotalcite as a heterogeneous catalyst for hydrogenation of benzene to cyclohexane. / Sharma, Sumeet Kumar; Sidhpuria, Kalpesh B; Jasra, Raksh V.

In: Journal of Molecular Catalysis A: Chemical, Vol. 335, No. 1-2, 01.02.2011, p. 65-70.

Research output: Contribution to journalArticle

Sharma, Sumeet Kumar ; Sidhpuria, Kalpesh B ; Jasra, Raksh V. / Ruthenium containing hydrotalcite as a heterogeneous catalyst for hydrogenation of benzene to cyclohexane. In: Journal of Molecular Catalysis A: Chemical. 2011 ; Vol. 335, No. 1-2. pp. 65-70.
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