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Catalytic deoxygenation of carboxyl compounds in the hydrothermal liquefaction crude bio-oil via in-situ hydrogen supply by CuO-CeO2/gamma-Al2O3 catalyst
Du, Hongbiao1; Yu, Qi1; Liu, Guohua1; Li, Jie1; Zhang, Jinglai1; Wang, Wenjia1,2; Duan, Guoyi3; Meng, Yanghao1; Xie, Haijiao4
2022-06-01
Source PublicationFUEL
ISSN0016-2361
Volume317Pages:10
AbstractHydrothermal liquefaction (HTL) has drawn great attention as a potential method to produce bio-oil from biomass waste. However, bio-crude from HTL shows undesired high-oxygen content and needs further deoxygenation upgrading. Herein, stearic acids as a model carboxylic compounds in HTL bio-crude was employed to investigate catalytic deoxygenation performance. Results showed that (CuO)(10)-CeO2/gamma-Al2O3 had the most superior catalytic deoxygenation performance for the stearic acids. The maximum stearic acid conversion rate (96.36%) and total hydrocarbon yield (88.79%) were obtained at 300 degrees C, 12 h, ratio of stearic acid to water 1 : 4. The main catalytic deoxygenation pathways were proposed: carbon monoxide generation (decarbonylation) - in-situ hydrogen generation (water-gas shift) - short-chain fatty acid generation (hydrogenolysis) - n-alkanes generation (decarboxylation, hydrodeoxygenation and hydrogenation). DFT calculation elucidated that CuO-CeO2 reduced the activation energy from 24.8 kcal mol(-1) (vacuum) to 15.0 kcal mol(-1) (catalytic). Thus, deoxygenation via CuO-CeO2/gamma-Al2O3 would be an effective method for upgrading HTL bio-crude.
KeywordCatalytic deoxygenation Stearic acid CuO-CeO2/gamma-Al2O3 Subcritical water In-situ hydrogen supply
DOI10.1016/j.fuel.2022.123367
Language英语
WOS KeywordAQUEOUS-PHASE HYDRODEOXYGENATION ; FAST PYROLYSIS ; PERFORMANCE ; OXIDATION ; BIOCRUDE ; ACID
Funding ProjectRenmin University of China ; Bill & Melinda Gates Foundation, United States[OPP 1051913]
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationRenmin University of China ; Bill & Melinda Gates Foundation, United States
WOS IDWOS:000783878300007
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/53018
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Guohua
Affiliation1.Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China
2.Univ Utah, Dept Chem Engn, Salt Lake City, UT 84112 USA
3.Chinese Acad Sci, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, CAS Key Lab Green Proc & Engn,State Key Lab Multi, Beijing 100190, Peoples R China
4.Hangzhou Yanqu Informat Technol Co Ltd, Y2 2nd Floor,Bldg 2,Xixi Legu Creat Pioneering Pk, Hangzhou 310003, Zhejiang, Peoples R China
Recommended Citation
GB/T 7714
Du, Hongbiao,Yu, Qi,Liu, Guohua,et al. Catalytic deoxygenation of carboxyl compounds in the hydrothermal liquefaction crude bio-oil via in-situ hydrogen supply by CuO-CeO2/gamma-Al2O3 catalyst[J]. FUEL,2022,317:10.
APA Du, Hongbiao.,Yu, Qi.,Liu, Guohua.,Li, Jie.,Zhang, Jinglai.,...&Xie, Haijiao.(2022).Catalytic deoxygenation of carboxyl compounds in the hydrothermal liquefaction crude bio-oil via in-situ hydrogen supply by CuO-CeO2/gamma-Al2O3 catalyst.FUEL,317,10.
MLA Du, Hongbiao,et al."Catalytic deoxygenation of carboxyl compounds in the hydrothermal liquefaction crude bio-oil via in-situ hydrogen supply by CuO-CeO2/gamma-Al2O3 catalyst".FUEL 317(2022):10.
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