title: Hydrolysis of cellulose catalyzed by quaternary ammonium perrhenates in 1-allyl-3-methylimidazolium chloride.
abstract: Quaternary ammonium perrhenates were applied as catalyst to promote the hydrolysis of cellulose in 1-allyl-3-methylimidazolium chloride ([Amim]Cl). The quaternary ammonium perrhenates displayed good catalytic performance for cellulose hydrolysis. Water was also proven to be effective to promote cellulose hydrolysis. Accordingly, 97% of total reduced sugar (TRS) and 42% of glucose yields could be obtained under the condition of using 5mol% of tetramethyl ammonium perrhenate as catalyst, 70μL of water, ca. 0.6mmol of microcrystalline cellulose (MCC) and 2.0g of [Amim]Cl as solvent under microwave irradiation for 30min at 150°C (optimal conditions). The influence of quaternary ammonium cation on the efficiency of cellulose hydrolysis was examined based on different cation structures of perrhenates. The mechanism on perrhenate catalyzed cellulose hydrolysis is also discussed, whereas hydrogen bonding between ReO4 anion and hydroxyl groups of cellulose is assumed to be the key step for depolymerization of cellulose.
authors: College of Chemical Engineering, China University of Petroleum, Changjiang Road 66, 266580 Qingdao, China; School of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, 113001 Fushun, China.
authors: Jingyun
authors: J
authors: Wang
authors: School of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, 113001 Fushun, China.
authors: Mingdong
authors: M
authors: Zhou
authors: School of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, 113001 Fushun, China.
authors: Yuguo
authors: Y
authors: Yuan
authors: Fushun Research Institute of Petroleum and Petrochemicals (Fripp), Sinopec, 113001 Fushun, China.
authors: Quan
authors: Q
authors: Zhang
authors: Fushun Research Institute of Petroleum and Petrochemicals (Fripp), Sinopec, 113001 Fushun, China.
authors: Xiangchen
authors: X
authors: Fang
authors: College of Chemical Engineering, China University of Petroleum, Changjiang Road 66, 266580 Qingdao, China; School of Chemistry and Materials Science, Liaoning Shihua University, Dandong Road 1, 113001 Fushun, China. Electronic address: slzang@lnu.edu.cn.
authors: Shuliang
authors: S
authors: Zang
mesh_terms: D000498:Allyl Compounds / Q000737:chemistry*; D064751:Ammonium Compounds / Q000737:chemistry*; D002482:Cellulose / Q000737:chemistry* / Q000378:metabolism*; D006868:Hydrolysis; D007093:Imidazoles / Q000737:chemistry*; D012211:Rhenium / Q000737:chemistry*
chemical_list: C544334:1-allyl-3-methylimidazolium; D000498:Allyl Compounds; D064751:Ammonium Compounds; D007093:Imidazoles; C015428:perrhenate; D012211:Rhenium; D002482:Cellulose
keywords: Cellulose; Hydrolysis; Ionic liquid; Perrhenate