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catalytic upgrading of bio-oil from halophyte seeds into transportation fuels

Journal of Bioresources and Bioproducts 2023年第4期8卷 444-460页

作者： Labeeb Ali Toyin Shittu Mohamed Shafi Kuttiyathil Ayesha Alam Muhammad Z.Iqbal Abbas Khaleel Kaushik Sivaramakrishnan Mohammednoor Altarawneh Department of Chemical and Petroleum Engineering United Arab Emirates UniversityAl-Ain 15551United Arab Emirates Department of Integrative Agriculture United Arab Emirates UniversityAl-Ain 15551United Arab Emirates Department of Chemistry United Arab Emirates UniversityAl-Ain 15551United Arab Emirates

Because of socioeconomic considerations,wide-scale production of biofuel necessitates the utilization of nonedible biomass feedstock that does not compete for land and fresh water *** this regard,Salicornia bigelovii(SB)is the most investigated halophyte *** high oil content in SB seeds has sparked mounting research that aims to utilize SB as an industrial crop in the production of bio-oil,particularly in coastal areas where these plants ***,the oil extracted from the pyrolysis of raw SB seeds is largely dominated by oxygenated fatty acids,most notably 9,12-octadecadienoic acid and 9,17-octadecadienal,typical to that of other *** pyrolysate bio-oil of the raw SB seeds exhibited a relative yield of oxygenated compounds that decreased from 57.05%at 200℃to 9.81%at 500℃,and the relative yield of nitrogenated compounds increased from 4.86%at 200℃to 21.97%at 500℃.To improve the quality of the produced bio-oil,herein we investigated the catalytic hydrodeoxygenation(HDO)of the fragments that were produced from the thermal degradation of SB seeds.A 5%Ni–CeO_(2)catalyst was prepared and characterized by a wide array of methods X-ray diffraction,X-ray photoelectron spectroscopy,temperature programmed reduction,scanning electron microscope,BrunauerEmmett-Teller analysis,and thermogravimetric *** catalytic run was executed between 200 and 500℃in a flow *** deployed catalytic methodology displayed a profound HDO *** 400℃,for instance,the gas chromatography mass spectroscopy(GC–MS)detected loads of paraffin and aromatic compounds exists at appreciable values of 48.0%and 28.5%,*** a total relative yield of 43.2%(at 400℃),C8–C15 species(i.e.,jet fuel fractions)were the most abundant species in the upgraded SB *** release of H_(2),CO,CO_(2),and CH_(4)was analyzed qualitatively and quantitatively using gas chromatography thermal conductivity detector and Fourier infrared spectroscopic *** the Ni

关键词： Salicornia bigelovii Bio-oil Hydrodeoxygenation catalytic upgrading Transportation fuel Reaction mechanism

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Py-GC/MS study of lignin pyrolysis and effect of catalysts on product distribution

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International Journal of Agricultural and Biological Engineering 2017年第5期10卷 214-225页

作者： Si Zhan Wang Chenguang Bi Kang Zhang Xinghua Yu Chiling Dong Renjie Ma Longlong Pang Changle Bioenergy and Environment Science&Technology Laboratory College of EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Renewable Energy Guangzhou Institute of Energy ConversionChinese Academy of SciencesGuangzhou 510640China Key Laboratory of Clean Production and Utilization of Renewable Energy Ministry of AgricultureBeijing 100083China School of Chemical Engineering and Energy Zhengzhou UniversityZhengzhou 450001China State Key Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China National Center for International Research of BioEnergy Science and Technology Ministry of Science and TechnologyBeijing 100083China Department of Vehicle Engineering College of EngineeringChina Agricultural UniversityBeijing 100083China

Fast pyrolysis is one of the most promising methods to convert lignin into fuels and *** the present study,pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)was used to evaluate vapor phase product distribution of lignin fast *** the non-catalytic pyrolysis process,lignin was pyrolyzed at 400℃,500℃ and 600℃ respectively,finding that the highest yield of aromatic hydrocarbons was obtained at 600℃.catalytic pyrolysis experiments were also conducted to investigate the effects of catalyst pore structure and acidity on the product *** different catalysts(HZSM-5,MCM-41,TiO_(2),ZrO_(2) and Mg(Al)O)were applied to lignin catalytic pyrolysis,and the catalytic performance was estimated by analyzing the pyrolytic *** catalysts were characterized by using X-ray diffraction(XRD),BET,and NH3(CO_(2))temperature programmed *** on these characterizations,discussion was carried out to explain the formation of the produc *** the five catalysts,HZSM-5 exhibited the best performance on the formation of aromatic hydrocarbons.

关键词： lignin Py-GC/MS fast pyrolysis catalytic upgrading pore structure acid-base property

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