Preparation of Alumina-carbon composites with phloroglucinol-formaldehyde resin and their application in asymmetric hydrogenation

Publication date: Available online 18 September 2019Source: Chinese Chemical LettersAuthor(s): Wenrui Cai, Renjie Xiong, Cong Mao, Meitian Xiao, Yongjun Liu, Ranjith Kumar Kankala, Xueqin ZhangAbstractTo overcome the shortcomings of single component carrier supported platinum (Pt)-based catalysts, herein, we demonstrate the fabrication of alumina combined mesoporous carbon to prepare a series of alumina-carbon composites and their corresponding Pt-based catalysts. The alumina-carbon composites Al@PhFC are synthesized by using phloroglucinol-formaldehyde resin as carbon source and aluminum acetylacetone as the aluminum source. Further, the effect of alumina content on the properties of the composites is investigated. The composites and catalysts are characterized by using XRD, XPS, N2 sorption, and TEM. The Pt/Al@PhFC-1.8 composite with appropriate amounts of alumina, pore diameter, and moderate Pt nanoparticle size, resulted in 99.5% of conversion efficiency and 77.4% of optical selectivity in the asymmetric hydrogenation of ethyl 2-oxo-4-phenylbutanoate (EOPB). Interestingly, this composite can be used more than 20 times without a significant decrease in its performance.Graphical abstractThe alumina-carbon composites Al@PhFC are synthesized by using phloroglucinol-formaldehyde resin as carbon source and aluminum acetylacetone as the aluminum source, and the corresponding supported Pt catalysts are applied in the asymmetric hydrogenation of ethyl 2-oxo-4-phenylbutanoate.
Source: Chinese Chemical Letters - Category: Chemistry Source Type: research