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

• Published in: Journal of fuel chemistry and technology 2019-06, Vol.47 (6), p.675-687
• Main Authors: XIAO, Zhu-qian, ZHANG, Qiang, WANG, Xiao-lei, GE, Qing, GAI, Xi-kun, MAO, Jian-wei, JI, Jian-bing
• Format: Article
• Language: English
• Subjects: bamboo pulp; hydrogenolysis; metallic catalysts; organic nitrogen; polyols
• ISSN: 1872-5813; 1872-5813
• DOI: 10.1016/S1872-5813(19)30029-5

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 Ni2+ cations, the graphitic g-C3N4 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 NiWO4 was included) were formed besides metallic Ni0 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 C3N4 layer characterized by TEM. Besides, the organic N sources were decomposed and the C3N4 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 C3N4 phase were deduced as the main contributors to maintain the catalyst stability.