Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 14, Pages 5776-5786Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c01280
Keywords
Biomass; Cellulose; Sulfate; Polar aprotic solvent; Synergistic effect
Categories
Funding
- National Natural Science Foundation of China [31530010, 31870714]
- Youth Talent Support Program for Science AMP
- Technology Innovation of National Forestry and Grassland [2019132603]
Ask authors/readers for more resources
Directional depolymerization is a critical step for the integrated utilization of waste lignocellulosic biomass resources to produce value-added biofuels and biochemicals. Herein, we demonstrate an efficient and environmentally benign liquefied process for converting cellulose and waste lignocellulosic residues into levulinic acid (LA) in a polar aprotic solvent using a low-cost sulfate as catalyst. Due to the synergistic effect between the gamma-valerolactone (GVL) and an active acid center derived from sulfate, more than 77 mol % and 61 mol % of biochemicals were obtained from cellulose and bamboo meal wastes in GVL/H2O (m/m = 9:1) solvent at 200 degrees C for 2 h, respectively. A combination of Al-27 NMR spectroscopy and electrospray quadrupole time-of-flight tandem mass spectrometry (ESI-Q-TOF-MS/MS) revealed that the [Al-(OH)(2)(aq)](+) species significantly contributed to cellulose depolymerization under cationic polarization of polar aprotic solvents. Besides, the existence of an appropriate amount of water was believed to be responsible for promoting the destruction of cellulose and the restraint of humin formation. Notably, all solvents and byproducts could be efficiently retrieved during this process, which shed light on its considerable industrial application prospects and facilitated the high value-added utilization of waste biomass resources.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available