Catalytic Upgrading of Lignocellulosic Biomass-Derived Compounds Using Hierarchical ZSM-5 Zeolites

IF 5.2 3区 工程技术 Q2 ENERGY & FUELS
Sancler C. Vasconcelos, Vinicius Rossa, Daniel G. S. Quattrociocchi, Vinicius G. C. Madriaga, Maria Clara O. Ribeiro, Saulo B. Pinheiro, Rodrigo D. dos Santos, Braulio S. Archanjo, Ernesto A. Urquieta-González, André V. H. Soares, Fabio B. Passos, Rajender S. Varma* and Thiago M. Lima*, 
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引用次数: 0

Abstract

Although fossil fuels are the primary energy source presently, their usage brings concerns related to the emissions of pollutants that pose risks to both human and environmental health. In this context, lignocellulosic biomass as a renewable feedstock stands out as a viable carbon-neutral energy source since it can be converted into fuel additives and several valuable products. This paper evaluated hierarchical ZSM-5 zeolites (Si/Al ratios of 23, 38, and 48) for the conversion of furfural into isopropyl levulinate. The hierarchical material was obtained through an alkaline treatment and characterized with X-ray diffraction, X-ray fluorescence, N2 physisorption, TPD-NH3, and Fourier transform infrared spectroscopy . Catalytic assessments and a factorial experimental design (23) were performed, and, as a result, a FUR conversion above 90% was observed, with an apparent obtained yield of 85% for the treated Z23DS zeolite. The results indicated that the catalyst acidity, the reaction temperature, and the amount of catalyst played significant roles in conversion and selectivity values. Furthermore, the hierarchical Z23DS zeolite promoted the aldol condensation of 5-hydroxymethylfurfural with acetone into sustainable aviation fuel precursors.

用分级ZSM-5沸石催化升级木质纤维素生物质衍生化合物
虽然化石燃料是目前的主要能源,但它们的使用带来了与污染物排放有关的关切,这些污染物对人类和环境健康构成威胁。在这种情况下,木质纤维素生物质作为一种可再生原料脱颖而出,成为一种可行的碳中性能源,因为它可以转化为燃料添加剂和几种有价值的产品。本文评价了分级ZSM-5分子筛(硅铝比分别为23、38和48)将糠醛转化为乙酰丙酸异丙酯的效果。通过碱性处理得到层叠材料,并用x射线衍射、x射线荧光、N2物理吸附、TPD-NH3和傅里叶变换红外光谱对其进行了表征。进行了催化评价和析因实验设计(23),结果,观察到90%以上的FUR转化率,处理后的Z23DS沸石的表观收率为85%。结果表明,催化剂酸度、反应温度和催化剂用量对转化率和选择性值有显著影响。此外,分级Z23DS沸石促进了5-羟甲基糠醛与丙酮的醛醇缩合成可持续航空燃料前驱体。
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来源期刊
Energy & Fuels
Energy & Fuels 工程技术-工程:化工
CiteScore
9.20
自引率
13.20%
发文量
1101
审稿时长
2.1 months
期刊介绍: Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.
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