Effects of biomolecules on the selectivity of biosynthesized Pd/MgO catalyst toward selective oxidation of benzyl alcohol

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	Effects of biomolecules on the selectivity of biosynthesized Pd/MgO catalyst toward selective oxidation of benzyl alcohol
	Jiang, Xi ; Liu, Hai ; Liang, Hanfeng ; Jiang, Guixian ; Huang, Jiale ; Hong, Yingling ; Huang, Dengpo ; Li, Qingbiao ; Sun, Daohua ; Huang JL(黄加乐) ; Li QB(李清彪) ; Sun DH(孙道华)
刊名	http://dx.doi.org/10.1021/ie503290c
	2014
关键词	Biochemistry Biomolecules Byproducts Oxidation Plant extracts Sols
英文摘要	Catalysts prepared through biosynthesis have aroused wide concern recently, but the detailed role of biomolecules and the identification of the main components have not been figured out yet. In this study, biogenic Pd/MgO catalysts were prepared through sol-immobilization (SI) and absorption-reduction (AR) methods, respectively, using Artocarpus heterophyllus Lam leaves extracts as reductant and stabilizer. The catalyst prepared by SI method showed obviously higher benzaldehyde selectivity than that by AR method under the same conditions. The difference can be attributed to the different oxidation behaviors of phenolic hydroxyls between the two synthetic procedures. In the SI procedure, the phenolic hydroxyls were oxidized to semiquinone, while in the AR procedure, the phenolic hydroxyls were oxidized to hydroxyquinone, resulting in less carboxyls binding onto the surface of the Pd nanoparticles (NPs), thus inhibiting the formation of the byproducts. Moreover, gallic acid, chlorgenic acid, and rutin were identified as the most active ingredients in the Artocarpus heterophyllus Lam leaves extracts. Similar catalytic performances were achieved when the model solution containing the three components was used instead of the original plant extracts. The biogenic Pd/MgO-SI catalyst also showed superior stability toward the oxidation of benzyl alcohol.
语种	英语
出版者	American Chemical Society
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/89749]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Jiang, Xi,Liu, Hai,Liang, Hanfeng,et al. Effects of biomolecules on the selectivity of biosynthesized Pd/MgO catalyst toward selective oxidation of benzyl alcohol[J]. http://dx.doi.org/10.1021/ie503290c,2014.
APA	Jiang, Xi.,Liu, Hai.,Liang, Hanfeng.,Jiang, Guixian.,Huang, Jiale.,...&孙道华.(2014).Effects of biomolecules on the selectivity of biosynthesized Pd/MgO catalyst toward selective oxidation of benzyl alcohol.http://dx.doi.org/10.1021/ie503290c.
MLA	Jiang, Xi,et al."Effects of biomolecules on the selectivity of biosynthesized Pd/MgO catalyst toward selective oxidation of benzyl alcohol".http://dx.doi.org/10.1021/ie503290c (2014).