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首页> 外文期刊>Fuel >A novel catalyst system based on quadruple silicoaluminophosphate and aluminosilicate zeolites for FCC gasoline upgrading
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A novel catalyst system based on quadruple silicoaluminophosphate and aluminosilicate zeolites for FCC gasoline upgrading

机译：基于四倍硅铝磷酸盐和铝硅酸盐沸石的新型催化系统，用于催化裂化汽油升级

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摘要

To develop a novel catalyst system that has excellent olefin reduction capability for FCC gasoline without loss in octane number, different catalysts supported on multiple composite earners consisting of SAPO-11, H beta HMOR and HZSM-5 were prepared and their catalytic performances for FCC gasoline upgrading were assessed in the present investigation. The pore structure and acidity of the catalysts were characterized by N_2 adsorption and pyridine adsorption FTIR, respectively. Based on the results obtained over the catalysts supported on binary-zeolite carriers (H beta/HZSM-5, HMOR/HZSM-5 and SAPO-1 l/HZSM-5) using FCC gasoline as the feedstock, various multiple-zeolite supported catalysts were developed from different combinations of the binary-zeolite systems. It was found that the S APO-11/HMOR/P/ZSM-5 quadruple composite zeolite supported catalyst gave higher liquid yield, improved gasoline RON, and lower coke deposit amount for the hydro-upgrading of FCC gasoline and thus can be considered as a potential catalyst system. A comprehensive analysis based on the catalytic activities and acidity measurements revealed that acid strength and acid type were two very important factors influencing hydroisomerization and aromatization activities, and the difference in catalyst acid strength determined which factor predominates.
机译：为了开发一种对催化裂化汽油具有出色的烯烃还原能力而又不损失辛烷值的新型催化剂体系，制备了负载在由SAPO-11，HβHMOR和HZSM-5组成的多种复合载体上的不同催化剂，以及它们对催化裂化汽油的催化性能。在本次调查中评估了升级。分别通过N_2吸附和吡啶吸附FTIR对催化剂的孔结构和酸度进行了表征。基于使用FCC汽油作为原料负载在二元沸石载体（H beta / HZSM-5，HMOR / HZSM-5和SAPO-1 l / HZSM-5）上的催化剂所获得的结果，各种多沸石负载的催化剂由二元沸石体系的不同组合开发而成。发现S APO-11 / HMOR / P / ZSM-5四重复合沸石负载型催化剂具有较高的液体收率，改善的汽油RON和降低的FCC汽油加氢焦炭沉积量，因此可以认为是潜在的催化剂体系。基于催化活性和酸度测量的综合分析表明，酸强度和酸类型是影响加氢异构化和芳构化活性的两个非常重要的因素，而催化剂酸强度的差异决定了哪个因素占主导。

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