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
Bimetallic Pt-Co catalysis on carbon nanotubes for the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol: Preparation and characterization
โ 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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โฆ 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.
๐ SIMILAR VOLUMES
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.