Selective hydrogenation of phenol to cyclohexanone over palladium supported on calcined Mg/Al hydrotalcite
作者： Y.Z. Chen , C.W. Liaw , L.I. Lee
DOI: 10.1016/S0926-860X(98)00252-X
关键词:
摘要: Abstract Calcined Mg/Al hydrotalcites (CHTs) with various atomic ratios of were prepared and used as supports for palladium catalysts. Selective hydrogenation phenol to cyclohexanone was investigated over Pd/CHT catalysts compared Pd/Al 2 O 3 , Pd/SiO Pd/CaO–Al Pd/MgO. The Pd/CHT(2–4) showed high reactivities selectivities cyclohexanone, reaching 95% selectivity 40% conversion. For catalysts, the calcined exhibit strong base sites that more effective than acid affect cyclohexanone. 0.3%Pd/CHT(2) catalyst a good candidate one-step process formation. On it reaction orders rate found be respect hydrogen pressure −1 partial phenol.
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