Polyaniline Supported Pd and Pt Catalysts. Role of Metal in Hydrogenation of 2-Butyne-1,4-diol

• Autorzy: Drelinkiewicz A. , Zięba A. , Król A. , Sobczak J. W. , Grzywa M.
• Języki publikacji: EN

Abstrakty

EN

Polyaniline (PANI), an electroactive polymer having amine (-NH-) and imine (-N=) groups in structure is used as the support for platinum and palladium catalysts. They are prepared, characterized by number of techniques (FTIR, XRD, XPS, SEM, TEM) and tested in the hydrogenation of alkyne, 2-butyne-1,4-diol (B3-D), reaction of industrial importance. Catalysts are prepared using aqueous solutions of PdCl2 and H2PtCl6 of pH = 2-3. In these conditions redox mechanism is involved resulting in partial reduction of Pd2+ to Pd0 and Pt4+ to Pt2+. In the as-prepared 2%Pd/PANI and additionally reduced 2%Pt/PANI catalysts the particles of Pd, Pt metal of size in nano-scale are formed. Performance of Pt and Pd-doped PANI in the hydrogenation of 2-butyne-1,4-diol (B3-D) strongly varies. In particular they differinability for selective hydrogenation of unsaturated C Identical to C bond in B3-D to 2-butene-1,4-diol. Catalytic performance of 2%Pt/PANI is found to be similar to that observed for typical, in organic carrier supported platinum catalysts. 2%Pd/PANI catalyst of fers much higher activity and almost se lectively reduces C Identical to C bond in B3-D to C Identical to C in B2-D. This advantageous performance of Pd/PANI catalyst can be related to an influence of electroactive matrix on properties of palladium centres.

Słowa kluczowe

EN

polyaniline; platinum; palladium; hydrogenation

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2008
• Tom: Vol. 82, nr 9
• Strony: 1717--1717
• Opis fizyczny: –1732, Bibliogr. 32 poz., rys.

Twórcy

autor

Drelinkiewicz A.

autor

Zięba A.

autor

Król A.

autor

Sobczak J. W.

autor

Grzywa M.

• Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków, Niezapominajek 8, Poland,

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