Kinetics of 4‐tert‐butylphenol hydrogenation over rhodium

С. Р. Конуспаев, Khairulla Zhanbekov, Natal'ya V. Kul'kova, Dmitry Yu. Murzin

1997

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DOI 10.1002/ceat.270200212
Data confidence 70 medium
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Abstract

Abstract The kinetics of the liquid phase hydrogenation of 4‐tert‐butylphenol to form cis‐ and trans‐ 4‐tert‐butylcyclohexanol at 1.0–10.0 MPa and 40°C in isopropanol over a Rh catalyst has been studied. The kinetic behavior of this parallel system is described by a proposed reaction network. Keto‐enol tautomeric transformation of adsorbed 4‐tert‐butyltetrahydrophenol and 4‐tert‐butylcyclohexanone is thought to be a key step, which governs the stereoselectivity of the overall complex reaction of alkylphenol hydrogenation.