Tomasek Szabina, Lonyi Ferenc, Valyon Jozsef, Wollmann Anett, Hancsók Jenő
Department of MOL Hydrocarbon and Coal Processing, University of Pannonia, Egyetem utca. 10, H-8200 Veszprém, Hungary.
Research Centre for Natural Sciences, Institute of Materials and Environmental Chemistry, Magyar Tudósok Körútja 2, H-1117 Budapest, Hungary.
ACS Omega. 2020 Oct 6;5(41):26413-26420. doi: 10.1021/acsomega.0c02711. eCollection 2020 Oct 20.
Biomass-based Fischer-Tropsch paraffin mixtures, having C-C and C-C carbon number range, were hydrocracked over platinum-supported beta, ZSM-5, and mordenite catalysts. The aim of the study was to investigate the effects of the feedstock composition, the process parameters, and the catalyst properties (acidity and zeolite structure) on the C conversions, the product yields, and the isoparaffin contents. It was stated that lower C conversions and higher JET and diesel fuel yields can be obtained for feedstock comprising C-C hydrocarbons. Under identical reaction conditions, the activity order of the catalysts was Pt/H-beta > Pt/H-ZSM-5 > Pt/H-mordenite. This order corresponds to the relative number of accessible acid sites. Among the tested catalysts, platinum-supported beta zeolite showed the highest hydroisomerization activity; meanwhile, in the pores of Pt/ZSM-5 and Pt/H-mordenite, diffusion constraints were observed. As the product of hydrocracking valuable gasoline, JET and diesel fuels having high hydrogen content and excellent burning properties were produced.
具有C-C和C-C碳数范围的生物质基费托石蜡混合物在负载铂的β沸石、ZSM-5和丝光沸石催化剂上进行加氢裂化。该研究的目的是研究原料组成、工艺参数和催化剂性能（酸度和沸石结构）对C转化率、产物收率和异链烷烃含量的影响。研究表明，对于含有C-C烃的原料，可以获得较低的C转化率和较高的喷气燃料及柴油收率。在相同的反应条件下，催化剂的活性顺序为Pt/H-β > Pt/H-ZSM-5 > Pt/H-丝光沸石。该顺序与可及酸位的相对数量相对应。在测试的催化剂中，负载铂的β沸石表现出最高的加氢异构化活性；同时，在Pt/ZSM-5和Pt/H-丝光沸石的孔中观察到扩散限制。作为加氢裂化的产物，生产出了具有高氢含量和优异燃烧性能的宝贵汽油、喷气燃料和柴油。
