title: Production of light olefins by catalytic conversion of lignocellulosic biomass with HZSM-5 zeolite impregnated with 6wt.% lanthanum.
abstract: Catalytic conversion of rice husk, sawdust, sugarcane bagasse, cellulose, hemicellulose and lignin into olefins was performed with HZSM-5 containing 6 wt.% lanthanum. The olefins yields for different feedstocks decreased in the order: cellulose>hemicellulose>sugarcane bagasse>rice husk>sawdust>lignin. Biomass containing higher content of cellulose or hemicellulose produced more olefins than feedstocks with higher content of lignin. Among the biomass types, sugarcane bagasse provided the highest olefin yield of 0.12 kg olefins/(kg dry biomass) and carbon yield of 21.2C-mol%. Temperature, residence time and the catalyst/feed ratio influenced olefin yield and selectivity. While the HZSM-5 zeolite was catalytically active, the incorporation of lanthanum at 2.9, and 6.0 wt.% increased the production of olefins from rice husk by 15.6% and 26.5%, respectively. The conversion of biomass to light olefins potentially provides an alternative and sustainable route for production of the key petrochemicals.
authors.affiliation: Department of Chemical Physics, Anhui Key Laboratory of Biomass Clean Energy, University of Science & Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Huang
authors.forename: Feiyan
authors.initials: F
authors.lastname: Gong
authors.forename: Minghui
authors.initials: M
authors.lastname: Fan
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhai
authors.forename: Chenggui
authors.initials: C
authors.lastname: Hong
authors.forename: Quanxin
authors.initials: Q
authors.lastname: Li
mesh_terms: D000475:Alkenes / Q000378:metabolism*; D056804:Biofuels; D018533:Biomass; D001709:Biotechnology / Q000379:methods; D002384:Catalysis; D002482:Cellulose / Q000378:metabolism*; D007811:Lanthanum / Q000737:chemistry*; D008031:Lignin / Q000378:metabolism*; D013696:Temperature; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry*
chemical_list: D000475:Alkenes; D056804:Biofuels; C036909:lignocellulose; D017641:Zeolites; D007811:Lanthanum; D002482:Cellulose; D008031:Lignin; C027433:bagasse