Production of bio-ethanol by consecutive hydrogenolysis of corn-stalk cellulose

Current bio-ethanol production entails the enzymatic depolymerization of cellulose, but this process shows low efficiency and poor economy. In work, we developed a consecutive aqueous hydrogenolysis for conversion corn-stalk cellulose to produce relatively high concentration (6.1 wt%) without humin formation. A yield (ca. 50 is extracted from corn stalk using green solvent (80 wt% 1,4-butanediol) destroying structure lignin. The first hydrothermal step uses Ni–WO x /SiO 2 catalyst convert cumulative (30 into polyol mixture with 56.5 C% ethylene glycol (EG). original then subjected subsequent selective aqueous-phase C–O bond bioethanol (75% conversion, 84 selectivity) over modified hydrothermally stable Cu catalysts. added Ni component favors good dispersion nanoparticles, incorporated Au 3+ helps stabilize active 0 -Cu + species. This multi-functional catalytic provides an economically competitive route cellulosic ethanol raw lignocellulose. formation has been developed.