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Selective production of monocyclic aromatic hydrocarbon from agricultural waste wheat straw for aviation fuel using Ni/ZSM-5 catalyst
Biomass & Bioenergy ( IF 5.8 ) Pub Date : 2022-09-19 , DOI: 10.1016/j.biombioe.2022.106592
Hongling Pan , Xuan Zhou , Shuixiang Xie , Zhicai Du , Guotao Li , Chunquan Zhang , Yan Luo , Xuefeng Zhang

Aromatic is a vital chemical raw material and product as well as an essential component for aviation fuel. Bio-based aromatics, especially the monocyclic aromatic hydrocarbon, are beneficial for the green chemical process and aviation fuel development. In this research, firstly, the effects of different kinds of metal catalysts (Pt/C, Rh/C, Ru/C, Pd/C, 65 wt% Ni/SiO2–Al2O3) on the pyrolysis behavior and aromatic hydrocarbons selectivity of four kinds of agricultural and forestry waste biomass (wheat straw, rape straw, poplar sawdust, and bamboo powder) were systematically investigated. The research results showed that the selectivity of aromatics has been largely increased in the presence of 65 wt% Ni/SiO2–Al2O3 while the carbon-based noble catalysts had few impacts on aromatics production. Furtherly, zeolite with different Si/Al ratios (5:18, 5:50, 5:85, 5:300, and 5:470) and the Ni loading amounts (5, 10, 15, 20, 25 wt%) were systematically studied. The series of Ni/ZSM-5 catalyst reduced the phenolic components in the pyrolysis products, and significantly increased the relative content of the target product aromatics, and the proportion of monocyclic aromatic hydrocarbons in the aromatic. The research results showed the ZSM-5 with the Si/Al ratio of 5:18 had the best catalytic properties for aromatic production. The loading of 10 wt% of Ni (10 wt% Ni/ZSM-5, Si/Al = 5:18) further boosted the catalytic performance for wheat straw, achieving the highest relative concentration of aromatic at 67%, of which the ratio of monocyclic aromatic hydrocarbon was 55%.



中文翻译:

Ni/ZSM-5催化剂从农业废弃麦秸中选择性制备航空燃料单环芳烃

芳烃是一种重要的化工原料和产品,也是航空燃料的重要组成部分。生物基芳烃,特别是单环芳烃,有利于绿色化工工艺和航空燃料的开发。本研究首先研究了不同种类的金属催化剂(Pt/C、Rh/C、Ru/C、Pd/C、65 wt% Ni/SiO 2 –Al 2 O 3)对热解行为和芳烃的影响。系统研究了麦秸、油菜秸、杨木屑和竹粉4种农林废弃物生物质的烃选择性。研究结果表明,在 65 wt% Ni/SiO 2 –Al 2的存在下,芳烃的选择性大大提高。3而碳基贵金属催化剂对芳烃生产的影响很小。此外,具有不同 Si/Al 比(5:18、5:50、5:85、5:300 和 5:470)和 Ni 负载量(5、10、15、20、25 wt%)的沸石分别为系统地研究。Ni/ZSM-5系列催化剂降低了裂解产物中的酚类成分,显着提高了目标产物芳烃的相对含量,以及芳烃中单环芳烃的比例。研究结果表明,Si/Al比为5:18的ZSM-5对芳烃生产具有最好的催化性能。负载 10 wt% 的 Ni (10 wt% Ni/ZSM-5, Si/Al = 5:18) 进一步提高了小麦秸秆的催化性能,达到了 67% 的最高芳烃相对浓度,

更新日期:2022-09-20
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