Solvent-free catalytic deoxygenation of oleic acid via nano-Ni/HZSM-5: Effect of reaction medium and coke characterization

doi:10.1016/j.fuproc.2018.07.024

GIEC OpenIR

	Solvent-free catalytic deoxygenation of oleic acid via nano-Ni/HZSM-5: Effect of reaction medium and coke characterization
	Xing, Shiyou 1,2,3; Lv, Pengmei1,2,3,4 ; Zhao, Che 1,2,3,5; Li, Ming 1,2,3; Yang, Lingmei1,2,3 ; Wang, Zhongming1,2,3,4 ; Chen, Yong1,2,3 ; Liu, Shijun 1,2,3
	2018-10-01
发表期刊	FUEL PROCESSING TECHNOLOGY
ISSN	0378-3820
卷号	179 页码:324-333
通讯作者	Lv, Pengmei(lvpm@ms.giec.ac.cn)
摘要	Non-H-2 and solvent-free catalytic conversion of waste lipids to liquid hydrocarbons is of great interest because of the associated low-cost, full-safety, and easy-operability. In this work, a solvent-free catalytic process for deoxygenating oleic acid was performed in H-2 and non-H-2 (N-2, CH4, and CO2) media over nano-Ni/HZSM-5. 8-Heptadecene, a primary product obtained at 320 degrees C in four media, was derived from the straightforward decarboxylation of oleic acid. In non-H-2 medium at 360 degrees C, the formation of C-8-C-15 alkanes was enhanced, with yields of ca. 65.05 mol%, 70.71 mol%, and 73.09 mol% for N-2, CH4, and CO2, respectively. A low yield of 49.67 mol% C-8-C-15 alkanes in H-2 medium suggested that the H-2 medium reduced catalytic cracking. This was due to the preferential formation of stable heptadecane from 8-heptadecene in the presence of abundant H-2. The absence of H-2 favored the cracking of 8-heptadecene. These cracked products were further converted to C-8-C-15 alkanes, for which a mass supply of hydrogen was mandatory. Gas-phase reactions including methanation, Fisher-Tropsch (F-T) synthesis, and water-gas shift (WGS) reactions between deoxygenated gas products and reaction media provided significant pathways for the hydrogen required for the formation of alkanes. The CH4 medium also acted as a hydrogen source due to its decomposition, catalyzed by nano-Ni/HZSM-5. Coke was substantially formed in all the four media. It was highlighted that the medium of H-2 favored the formation of aliphatic cokes, whereas the non-H-2 media, particularly the CO2 medium, facilitated aromatic coke species on account of its weak oxidizability. Additionally, there was a severe loss of loaded Ni nanoparticles under H-2 medium but a slight Ni loss in CO (2) medium, which was proposed to the reason of aromatic cokes formation at the catalyst surface, acting as a trap for the loaded Ni nanoparticles.
关键词	Solvent-free deoxygenation Oleic acid Reaction medium effect Coke identification
DOI	10.1016/j.fuproc.2018.07.024
关键词[WOS]	FATTY-ACIDS ; VEGETABLE-OILS ; STEARIC-ACID ; AROMATIC-HYDROCARBONS ; REACTION PATHWAYS ; N-HEPTADECANE ; BIOJET FUEL ; PART II ; DEHYDROGENATION ; DECARBOXYLATION
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51606201] ; National Natural Science Foundation of China[21576260] ; China Postdoctoral Science Foundation[2018M633174] ; Natural Science Foundation of Guangdong Province[2016A030308004] ; Natural Science Foundation of Guangdong Province[2015A030313720] ; Special Funds of Applied Science and Technology Research of Guangdong Province[2015B020241002]
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Natural Science Foundation of Guangdong Province ; Special Funds of Applied Science and Technology Research of Guangdong Province
WOS类目	Chemistry, Applied ; Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000445316800033
出版者	ELSEVIER SCIENCE BV
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/23934
专题	中国科学院广州能源研究所
通讯作者	Lv, Pengmei
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Collaborat Innovat Ctr Biomass Energy, Zhengzhou 450002, Henan, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Xing, Shiyou,Lv, Pengmei,Zhao, Che,et al. Solvent-free catalytic deoxygenation of oleic acid via nano-Ni/HZSM-5: Effect of reaction medium and coke characterization[J]. FUEL PROCESSING TECHNOLOGY,2018,179:324-333.
APA	Xing, Shiyou.,Lv, Pengmei.,Zhao, Che.,Li, Ming.,Yang, Lingmei.,...&Liu, Shijun.(2018).Solvent-free catalytic deoxygenation of oleic acid via nano-Ni/HZSM-5: Effect of reaction medium and coke characterization.FUEL PROCESSING TECHNOLOGY,179,324-333.
MLA	Xing, Shiyou,et al."Solvent-free catalytic deoxygenation of oleic acid via nano-Ni/HZSM-5: Effect of reaction medium and coke characterization".FUEL PROCESSING TECHNOLOGY 179(2018):324-333.