title: Selective conversion of bio-oil to light olefins: controlling catalytic cracking for maximum olefins.
abstract: Light olefins are the basic building blocks for the petrochemical industry. In this work, selective production of light olefins from catalytic cracking of bio-oil was performed by using the La/HZSM-5 catalyst. With a nearly complete conversion of bio-oil, the maximum yield reached 0.28±0.02 kg olefins/(kg bio-oil), which was close to that from methanol. Addition of La into zeolite efficiently changed the total acid amount of HZSM-5, especially the acid distribution among the strong, medium and weak acid sites. A moderate increase of the number of the medium acid sites effectively enhanced the olefins selectivity and improved the catalyst stability. The comparison between the catalytic cracking and pyrolysis of bio-oil was studied. The mechanism of the conversion of bio-oil to light olefins was also discussed.
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: Feiyan
authors.initials: F
authors.lastname: Gong
authors.forename: Zhi
authors.initials: Z
authors.lastname: Yang
authors.forename: Chenggui
authors.initials: C
authors.lastname: Hong
authors.forename: Weiwei
authors.initials: W
authors.lastname: Huang
authors.forename: Shen
authors.initials: S
authors.lastname: Ning
authors.forename: Zhaoxia
authors.initials: Z
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
authors.forename: Quanxin
authors.initials: Q
authors.lastname: Li
mesh_terms: D000475:Alkenes / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D006358:Hot Temperature; D007811:Lanthanum / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical; D056951:Photoelectron Spectroscopy; D010938:Plant Oils / Q000737:chemistry*; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry
chemical_list: D000475:Alkenes; D010938:Plant Oils; D017641:Zeolites; D007811:Lanthanum