Palladium-Copper-exchanged Y Type Zeolites: A True Heterogeneous Wacker Catalyst

DOI: 10.1039/c39910000669

Source and publish data:

Journal of the Chemical Society. Chemical communications p. 669 - 671 (1991)

Update date:2022-08-12

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Authors:

Espeel, P. H.

Tielen, M. C.

Jacobs, P. A.

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Article abstract of DOI:10.1039/c39910000669

Evidence is presented that faujasite-type zeolites with specific Si:Al framework ratios exchanged with Pd(NH3)4²⁺ and Cu²⁺, catalyse the oxidation of ethylene into acetaldehyde, in exactly the same way as the homogeneous Wacker system II and Cu^II in concentrated chloride solution>; the active centre is found to be a partially ammoniated Pd^II ion, most probably Pd^II(NH3)2, which itself belongs to an electron transfer chain consisting of the alkene reagent, the faujasite encaged Pd^II/Pd⁰ and Cu^II/Cu^I redox couples and dioxygen.

Full text of DOI:10.1039/c39910000669

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