Catalytic Pyrolysis Vapor Upgrading of Corncob into Furans over Pyrolysis-Comprehensive Two-Dimensional Gas Chromatograp
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Catalytic Pyrolysis Vapor Upgrading of Corncob into Furans over Pyrolysis-Comprehensive Two-Dimensional Gas Chromatography/Mass Spectrometry: Significance of Catalyst and Temperature Wenbin Li 1,2 & Yi Lu 1 & Yongfeng Zhu 2 & Xingyong Li 2 & Jida Wang 1 & Shuirong Li 2 & Yunwu Zheng 1 Zhifeng Zheng 2
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# Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Analytical pyrolysis-comprehensive two-dimensional gas chromatography/mass spectrometry (Py-GC×GC/MS) was employed for the on-line analysis of catalytic pyrolysis products distribution and furans selectivity of corncob. Different catalysts (TiO2, ZrO2, MCM-41 and activated carbon (AC)) and catalytic temperature (350 °C, 400 °C, 450 °C and 500 °C) were investigated. The catalysts were subjected to several characterization methods, including temperature programmed decomposition of ammonia (NH3-TPD) and N2 adsorption-desorption, to investigate the effects of physical-chemical properties of the catalysts on products distribution and furans selectivity. The experiment results showed that a lower catalytic temperature (≤ 400 °C) was conductive to form furans and higher catalytic temperature (≥ 450 °C) was promoted hydrocarbons formation, among the four catalysts. The AC catalyst gave higher furans relative peak area (54.48%) than other catalysts (31.24% ~ 41.99%). And higher total acidity (weak acidity) of AC was favored for the formation of furfural and furan, 2-methyl- at 350 °C. Moreover, AC had the great thermal stability, and the catalyst recycling tests showed that the prepared AC can be reused for five times in furan-rich bio-oil production. After cycle, the relative peak area of furans also maintained above 40%. In addition, furan, 2-methyl- always maintained a high relative peak area (8%). It was expected that four type catalysts can be widely used for biomass catalytic conversion to produce furans processes at low catalytic temperature, especially the AC. Keywords Pyrolysis . Catalytic conversion . Furans . Py-GC×GC/MS . Activated carbon
Introduction Over the years, in order to reduce the heavy reliance on nonrenewable fossil resources and negative effects of greenhouse gases, researchers have shown increasing interest in the
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12155-020-10146-3) contains supplementary material, which is available to authorized users. * Yunwu Zheng [email protected] 1
Engineering Laboratory for Highly-Efficient Utilization of Biomass, Yunnan Province, College of Materials Science and Engineering, Southwest Forestry University, Kunming 650224, China
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Xiamen Key Laboratory for High-valued Conversion Technology of Agricultural Biomass, Fujian Provincial Engineering and Research Center of Clean and High-valued Technologies for Biomass, College of Energy, Xiamen University, Xiamen 361102, China
efficient conversion of renewable biomass resources into various valuable chemicals [1, 2]. Biomass, such as wood, grass, and agricultural waste, has the characterist
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