Organic nitrogen promotes stability of metallic catalysts in conversion of bamboo pulp to low carbon polyols

Abstract Herein, the synthesis and performance of a novel and stable catalyst capable of facile hydrolysis of bamboo pulp were reported. Based on adopting complex agent to have a complex reaction with Ni 2+ cations, the graphitic g-C 3 N 4 phase and nitride phases were formed eventually. The interaction among metals and C, N atoms was analyzed by XRD and XPS. Some Ni-W alloys (mainly NiWO 4 was included) were formed besides metallic Ni 0 and tungsten species characterized. Particles on the surface of 15%Ni-20%W/MBC@M-0.25 catalyst exhibited homogeneous distribution and surrounded by disordered C 3 N 4 layer characterized by TEM. Besides, the organic N sources were decomposed and the C 3 N 4 phase with high hydrothermal property was formed simultaneously. For catalytic efficiency, 15%Ni-20%W/MBC@M-0.25 catalyst acquired the highest EG yield of 55.8% compared to 36.9% via 15%Ni-20%W/MBC catalysts. The carbon supports and organic nitrogen sources demonstrated great influence on catalytic efficiency. Catalyst recycle experiments implied that Ni-W/MBC@M-0.25 could remain relative stable under this catalytic reaction condition. The Ni-W alloys and the C 3 N 4 phase were deduced as the main contributors to maintain the catalyst stability.