Highly dispersed Pd catalysts supported on various carbons for furfural hydrogenation
| Autor: | Sang Hoon Joo, Man Sig Lee, Jinwoo Woo, Chinh Nguyen-Huy, Kwangjin An, Jihyeon Lee |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_element
02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Cyclopentanone Furfural 01 natural sciences Catalysis 0104 chemical sciences Furfuryl alcohol Solvent chemistry.chemical_compound Sodium borohydride Cyclopentanol chemistry Organic chemistry 0210 nano-technology Carbon |
| Zdroj: | Catalysis Today. 350:71-79 |
| ISSN: | 0920-5861 |
| Popis: | Furfural (FAL), one of the important platform molecules derived from lignocellulosic biomass, can be converted into valuable chemicals such as furfuryl alcohol or cyclopentanone via hydrogenation. While carbon materials have been used as versatile catalyst supports for FAL hydrogenation, systematic studies on the structure of the catalytic performances are lacking. In this work, we prepare various types of carbon supports to investigate the impact of carbon structures for Pd-catalyzed FAL hydrogenation. Mesoporous carbons, including CMK-3, CMK-5, CMK-8, and MSU-F-C, as well as carbon nanotube and Vulcan XC are used as carbon supports. For the preparation of highly dispersed Pd-supported carbon (Pd/C) catalysts, chemical reduction by sodium borohydride is applied, in which trisodium citrate plays a critical role in anchoring small Pd clusters on the carbons. In the liquid-phase hydrogenation of FAL, CMK-5 with the largest surface area and hexagonal hollow tubular framework is proven to be the most efficient carbon support for Pd/C catalysts, with the highest conversion of FAL in both 2-propanol (100%) and water (86.4%) solvents. It is also demonstrated that the product selectivity in FAL hydrogenation over various Pd/C catalysts is changed dramatically depending on the type of solvent. The Pd/C catalysts exhibit similar fractions of product distributions containing furfuryl alcohol, cyclopentanol, tetrahydrofurfuryl alcohol, and minor products in 2-propanol. However, the production of cyclopentanone is increased when water is used as a solvent. |
| Databáze: | OpenAIRE |
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