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An SiO2-Embedded Nanoscopic Pd/Au Alloy Colloid (2000)

Bönnemann, Helmut ; Endruschat, Uwe ; Tesche, Bernd ; [weitere]

Weinheim : Wiley-Blackwell

Berichte der deutschen chemischen Gesellschaft 2000 (2000), S. 819-822

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Details

ISSN: 1434-1948

Schlagwort(e): Colloids ; Sol-gel processes ; Immobilization ; Heterogeneous catalysts ; Hydrogenations ; Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Notizen: A bimetallic, fully alloyed Pd/Au colloid of 3.0 nm particle size, obtained by the co-reduction of Pd and Au salts with tetraalkylammonium triethylhydroborate, was embedded in a silica matrix employing a modified sol-gel procedure with THF as the solvent. The removal of the protecting tenside led to a mesoporous texture with a comparatively narrow pore distribution. The physical characterisation by a combination of several techniques has shown that the SiO2-embedded Pd/Au colloid preserves the size and the structural characteristics of the colloidal metal precursor. The new material exhibits catalytic properties in selective hydrogenation.

Zusätzliches Material: 4 Ill.

Materialart: Digitale Medien

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