title: Sulfonated hierarchical H-USY zeolite for efficient hydrolysis of hemicellulose/cellulose.
abstract: Sulfonated hierarchical H-USY zeolite was prepared and characterized by X-ray diffraction, N2 physisorption, Fourier transform infrared spectroscopy, inductively coupled plasma atomic emission spectroscopy, temperature-programmed desorption of ammonia, and acid-base titration. It was proved that sulfonic group was successfully anchored onto the hierarchical H-USY zeolite. The acidity of the hierarchical H-USY was remarkably improved. Sulfonated hierarchical H-USY zeolite was efficient for the hydrolysis of hemicellulose and cellulose. The yield of TRS for hydrolysis of hemicellulose reached 78.0% at 140 °C for 9h. For hydrolysis of α-cellulose, 60.8% conversion with 22.4% yield of glucose was obtained. Even for microcrystalline cellulose, 43.7% conversion with 15.1% yield of glucose can be obtained. These results are much higher than those obtained over hierarchical H-USY zeolite, indicating that both the acidity and the pore structure determine the activity of zeolite as catalyst in the hydrolysis of biomass.
authors.affiliation: College of Chemistry and Molecular Engineering, Zhengzhou University, 100 Kexue Road, Zhengzhou 450001, PR China.
authors.forename: Lipeng
authors.initials: L
authors.lastname: Zhou
authors.forename: Zhen
authors.initials: Z
authors.lastname: Liu
authors.forename: Meiting
authors.initials: M
authors.lastname: Shi
authors.forename: Shanshan
authors.initials: S
authors.lastname: Du
authors.forename: Yunlai
authors.initials: Y
authors.lastname: Su
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Yang
authors.forename: Jie
authors.initials: J
authors.lastname: Xu
mesh_terms: D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D006868:Hydrolysis; D011134:Polysaccharides / Q000737:chemistry*; D013451:Sulfonic Acids / Q000737:chemistry*; D017641:Zeolites / Q000737:chemistry*
chemical_list: D011134:Polysaccharides; D013451:Sulfonic Acids; D017641:Zeolites; C007916:hemicellulose; D002482:Cellulose
keywords: Cellulose; Hemicellulose; Hierarchical zeolites; Hydrolysis; Sulfonic group