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Bimetallic Pt-Co catalysis on carbon nanotubes for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol: Preparation and characterization

โœ Scribed by Yan Li; Zhen-Guo Li; Ren-Xian Zhou


Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
662 KB
Volume
279
Category
Article
ISSN
1381-1169

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โœฆ Synopsis


Carbon nanotubes (CNTs)-based Pt-Co catalysts are prepared by different impregnation techniques and different reduction methods (H 2 , HCHO and KBH 4 ) for the selective reduction of cinnamaldehyde (CMA) to the corresponding cinnamyl alcohol (CMO). The selectivity and activity of the Pt-Co/CNTs catalysts can be improved significantly by using ammonia as a ligand and KBH 4 as a reducing agent because of the synergetic effect of Pt-Co-B. Furthermore, the hydrogenation rate of CMA increases ulteriorly in the presence of trace base and acid promoters.


๐Ÿ“œ SIMILAR VOLUMES


Selective hydrogenation of cinnamaldehyd
โœ Yan Li; Peng-Fei Zhu; Ren-Xian Zhou ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 804 KB

The Pt-Co catalysts supported on carbon nanotubes (CNTs) have been prepared by wet impregnation and the selective hydrogenation of cinnamaldehyde (CMA) to the corresponding cinnamyl alcohol (CMO) over the catalysts has been studied in ethanol at different reaction conditions. The results show that P

Preparation of polymer-protected Pt/Co b
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A polymer-protected PtlCo bimetallic colloid with a molar ratio of 3:l has been prepared by a polyol process. Over the above PtlCo bimetallic colloid catalyst, cinnamaldehyde can be selectively hydrogenated to cinnamyl alcohol with 99.8% selectivity at 96.2% conversion.