EU⁃1分子筛的合成及其在正己烷异构化反应中的催化性能  

Synthesis and catalytic activity in n⁃hexane isomerization of EU-1 zeolite

作　　者：张通 史静[2] 薛招腾 毛东森 滕加伟[2] ZHANG Tong;SHI Jing;XUE Zhao‑Teng;MAO Dong‑Sen;TENG Jia‑Wei(School of Chemical and Environment Engineering,Shanghai Institute of Technology,Shanghai 201418,China;State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,Sinopec Shanghai Research Institute of Petrochemical Technology,Shanghai 201208,China)

机构地区：[1]上海应用技术大学化学与环境工程学院,上海201418 [2]中国石油化工股份有限公司上海石油化工研究院绿色化工与工业催化国家重点实验室,上海201208

出　　处：《无机化学学报》2023年第4期659-670,共12页Chinese Journal of Inorganic Chemistry

基　　金：上海市自然科学基金(No.20ZR1455500);上海应用技术大学引进人才科研启动项目(No.YJ2021‑34)资助。

摘　　要：在不同硅铝比(n SiO_(2)/n Al2O_(3))的合成凝胶(含纯硅凝胶)中引入晶种,合成了纯相的EU‐1分子筛。研究了铝源、模板剂和晶种添加量对EU‐1分子筛的结晶度、形貌尺寸等的影响;重点研究了不同硅铝比对样品结晶度、晶粒尺寸、酸性、比表面积和孔容等的影响。将合成结果绘制成了纯相EU‐1分子筛的合成条件三元图,从三元图可看出,晶种法可显著扩大纯相EU‐1分子筛的合成区域。将Pt/H‐EU‐1用于正己烷异构化反应,结果表明,该催化剂具有优异的正己烷异构化活性及稳定性,对异构烷烃有较高的选择性。In this study,a series of pure‑phase EU‑1 zeolites were synthesized by introducing seeds into a series of synthetic gels with different SiO_(2)/Al2O_(3) ratios(nSiO_(2)/nAl2O_(3),containing pure silicon gel).The effect of the aluminum source,the amount of template and seed on the crystallinity,and the morphology and size of EU‑1 zeolite were investigated.The effects of different SiO_(2)/Al2O_(3) ratios synthesis systems on the crystallinity,crystal size,acidic property,specific surface area,and pore volume of the samples were emphatically studied.Pure phase EU‑1 was synthesized not only in a high‑silicon system but also in an aluminum‑free system by the seeding method.The results were plotted into a ternary plot of the synthesis conditions of pure phase EU‑1 zeolite.It is obvious from the ternary plot that the crystal seed method can significantly expand the synthesis region of pure phase EU‑1 zeolite.Pt/H‑EU‑1 was applied to catalyze the n‑hexane isomerization reaction.The results showed that the catalyst had excellent n‑hexane isomerization activity and stability,and high selectivity to isoparaffins.

关 键 词：EU‐1分子筛 硅铝比 模板剂 晶种 合成区域 正己烷异构化 

分 类 号：O643[理学—物理化学] TQ426[理学—化学]