An environment-friendly dip-catalyst with xylan-based catalytic paper coatings. (1st January 2022)

• Record Type: Journal Article
• Authors: He, Mengyun; Song, Tao; Qi, Haisong; Xiang, Zhouyang
• Is Part Of: Carbohydrate polymers. Volume 275(2022)
• Publication Date: 2022-01-01
• Subjects: Xylan -- Paper coating -- Dip-catalyst -- Suzuki-Miyaura reaction -- Pd nanoparticles; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2021.118707
• Languages: English
• ISSNs: 0144-8617

Abstract

Abstract: Replacing catalyst supports with sustainable and degradable materials is an urgent task. Xylan is a type of abundant natural polymers with potential applications in dispersing, anchoring, and coating materials, but its material values have always been underestimated. In this study, polyethyleneimine modified dialdehyde xylan (DAX-PEI) was used as a dispersing and anchoring agent to bind Pd nanoparticles onto paper surface to produce a DAX-PEI-Pd coated paper, which was used to catalyze Suzuki-Miyaura reactions. The catalytic coated paper exhibited a good catalytic activity with a yield of 91% and a high turnover frequency (TOF) of 3300 h −1 . Besides, it showed an excellent recyclability with the same catalytic coated paper being used 15 times and still having a yield of nearly 90%. This environment-friendly catalytic coated paper owns its great prospect in organic synthesis. Highlights: Xylan was oxidized, modified with PEI (DAX-PEI) and used to stabilize Pd 2+ . Pd 2+ was reduced by aldehydes and hydroxyls on DAX-PEI and the assistance of ethanol. Pd nanoparticles was well dispersed and anchored on paper surface through DAX-PEI. DAX-PEI-Pd catalytic paper showed great catalytic efficiency and high recyclability.