Integrated C-C coupling/hydrogenation of ketones derived from biomass pyrolysis for aviation fuel over Ni/Mg-Al-O/AC bifunctional catalysts

JOURNAL OF CLEANER PRODUCTION

卷:282

Article

Shao, Shanshan^1,2  Hu, Xinggang¹  Dong, Wenbin¹  Li, Xiaohua¹  Zhang, Huiyan²  Xiao, Rui²  Cai, Yixi¹ 

[1] Jiangsu Univ, Sch Automot & Traff Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Southeast Univ, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Peoples R China

关键词: Aviation fuel;    Ketones;    Aldol condensation;    Hydroprocessing;    Bifunctional catalyst;    One-pot;   

DOI  :  10.1016/j.jclepro.2020.124331

来源: Elsevier

【 摘 要 】

Aldol condensation of biomass-derives coupled with hydrogenation is a promising route for the production of renewable aviation fuel. In this study, a bifunctional catalyst was prepared to integrate the aldol condensation of cyclopentanone and hydroprocessing for aviation fuel in one pot. Due to its strong mild-basic sites, Mg-Al-O performed the best with the total yield of dimer and trimer of 80.4%. Nickel was screened out to be favorable for hydrogenation. Considering the unsatisfactory porous structure of Ni/Mg-Al-O, the bifunctional catalyst was prepared with activated carbon (AC) as carrier. With Ni loading of 20 wt%, the maximum yield of targeted alkanes reached 81.1% over Ni/Mg-Al-O/AC. The calcination and reduction temperature in the preparation process were both optimized at 550 degrees C. In the reusability test, the yield of targeted alkanes reduced to 31.6% in the 5th run. To attenuate the hydration effect, n-pentane was introduced as solvent, and the bifunctional Ni/Mg-Al-O/AC performed stably in 5 runs. By the design of bifunctional catalyst based on the theoretical basis to realize the integration of C-C coupling and hydrogenation in one pot, it will promote the development of aviation fuel from biomass in a more sustainable and green way. (C) 2020 Elsevier Ltd. All rights reserved.

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