Estimation of Catalytic Cracking of Vacuum Gas Oil by a Y Zeolite-Containing Two-Layered Catalyst and a Novel Three-Layered Hierarchical Catalyst Using a Curie Point Pyrolyzer Method,Energy & Fuels

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Estimation of Catalytic Cracking of Vacuum Gas Oil by a Y Zeolite-Containing Two-Layered Catalyst and a Novel Three-Layered Hierarchical Catalyst Using a Curie Point Pyrolyzer Method
Energy & Fuels ( IF 5.2 ) Pub Date : 2020-05-26 , DOI: 10.1021/acs.energyfuels.0c00957
Atsushi Ishihara ₁ , Shinya Matsuura _{1,

2} , Fumiya Hayashi ₁ , Kouki Suemitsu ₁ , Tadanori Hashimoto ₁

Affiliation

A Y zeolite-containing two-layered catalyst and a novel three-layered hierarchical catalyst were prepared using a template and the gel skeletal reinforcement (GSR) method. Initially, two-layered catalysts were prepared by the sol–gel method using malic acid as the template in the presence of HY zeolite (HYZ). The two-layered hierarchical catalyst, 2L(S-HYZ), consisted of 50 wt % the mesoporous part of silica (S) and 50 wt % the microporous part of HYZ. The three-layered hierarchical catalyst, 3L(GSR-S)2L(S-HYZ), was made by GSR silica (GSR-S) production in the presence of 2L(S-HYZ) where silica gel particles including 2L(S-HYZ) inside were reinforced by a reinforcing solution of hexamethyldisiloxane–acetic anhydride before aging and successive calcination and consisted of 50 wt % large-mesoporous GSR-S and 50 wt % the 2L(S-HYZ) hierarchical catalyst. It was confirmed by XRD and N₂ adsorption and desorption measurement that this catalyst possessed three characters of microporous zeolite crystals, small mesoporous silica, and large mesoporous silica. Catalytic cracking of vacuum gas oil over these hierarchical catalysts was performed using a Curie point pyrolyzer method. 3L(GSR-S)2L(S-HYZ)(Z25), which included 25 wt % HYZ, exhibited the highest activity. Further, it was proposed that the activity could be related to not only the amount of acid sites but also the size of mesoporous pore volume.

中文翻译：

含Y沸石的两层催化剂和新型三层分层催化剂的居里点热解法估算真空瓦斯油的催化裂化

利用模板和凝胶骨架增强（GSR）方法制备了含AY沸石的两层催化剂和新型三层分级催化剂。最初，在HY沸石（HYZ）存在下，以苹果酸为模板，通过溶胶-凝胶法制备了两层催化剂。两层分级催化剂2L（S-HYZ）由50重量％的二氧化硅（S）的中孔部分和50重量％的HYZ的微孔部分组成。三层分级催化剂3L（GSR-S）2L（S-HYZ）由GSR二氧化硅（GSR-S）在2L（S-HYZ）存在下生产而成，其中内部的2L（S-HYZ）硅胶颗粒由六甲基二硅氧烷-乙酸酐的增强溶液增强，然后老化和连续煅烧，由50重量％的大介孔GSR-S和50重量％的2L（S-HYZ）分级催化剂组成。由XRD和N确认₂吸附和解吸测量表明该催化剂具有微孔沸石晶体，小中孔二氧化硅和大中孔二氧化硅的三个特征。使用居里点热解器方法在这些分级催化剂上对真空粗柴油进行催化裂化。包含25重量％的HYZ的3L（GSR-S）2L（S-HYZ）（Z25）表现出最高的活性。此外，提出了该活性不仅可以与酸性位点的数量有关，而且可以与介孔孔体积的大小有关。

更新日期：2020-06-18

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