Valorization of crude bio-oil to sustainable energy vector for applications in cars powering and on-board reformers via catalytic hydrogenation
Valorization of crude bio-oil to sustainable energy vector for applications in cars powering and on-board reformers via catalytic hydrogenation
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DOI：
10.1016/j.ijhydene.2015.08.010
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发表时间：
2015-11
影响因子：
7.2
通讯作者：
L. Spadaro;A. Palella;F. Frusteri;F. Arena
中科院分区：
文献类型：
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作者：
L. Spadaro;A. Palella;F. Frusteri;F. Arena
热解生物油可以作为能源载体，但在用作运输燃料和替代氢源之前需要进一步升级。因此，在模拟工业条件（T，250-300 °C; P，10-20 bar）下，采用在400 °C下在流动H2S中预硫化的CoMo/Al 2 O3催化剂，研究了几种模型化合物（即醚、醇、酸、烯烃和愈创木酚）和通过坚果废弃生物质快速热解获得的粗生物油的催化加氢过程。取决于各种化合物的化学结构，发生复杂的反应网络，主要涉及加氢脱氧（HDO）、加氢（HYD）和加氢裂化（HCR）过程。在生物质原油加氢处理过程中，所有这些反应同时进行，意味着生成了大量的烃类化合物，证明了生物质原油加氢处理过程的可行性。提出了一种基于化合物和官能团加氢效率的反应性尺度，也提供了在HDT过程中织构和物理化学性质对CoMo硫化催化剂的活性和选择性的影响的证据。
Crude pyrolysis bio-oil can be used as energy vector, but further upgrading is required before its utilization as transportation fuel and alternative hydrogen source. Therefore, the catalytic hydrogenation process of several model compounds (i.e. ether, alcohol, acid, olefin and guaiacol) and of crude bio-oil obtained by fast pyrolysis of nuts waste biomass has been investigated using CoMo/Al2O3catalysts,pre-sulfided in flowing H2S at 400 °C, with different textural properties under simulated industrial conditions (T, 250–300 °C; P, 10–20 bar). Depending on the chemical structure of the various compounds, a complex reaction network, involving mostly hydro-deoxygenation (HDO), hydrogenation (HYD) and hydrocracking (HCR) processes, occurs. The simultaneous proceeding of all these reactions during the hydrotreating (HDT) of the crude bio-oil implies the formation of a wide range of hydrocarbon compounds documenting the feasibility of the upgrading process to obtain liquid transportation fuels and hydrogen-source compounds.A scale of reactivity based on the effectiveness of hydrogenation of compounds and functional groups has been proposed, also providing evidence of the effects of the texture and physico-chemical properties on the activity and selectivity of the CoMo sulfided catalysts in the HDT processes.