Direct Synthesis of UOS Zeolite Using a Simple and Commercially Available Organic Structure-directing Agent  

作　　者：HU Chao FU Wenhua YUAN Zhiqing LIU Chuang WANG Zhendong YANG Weimin 

机构地区：[1]School of Chemical Engineering,East China University of Science and Technology,Shanghai,200237,P.R.China [2]State Key Laboratory of Green Chemical Engineering and Industrial Catalysis,Sinopec Shanghai Research Institute of Petrochemical Technology Co.,Ltd.,Sinopec,Shanghai,201208,P.R.China

出　　处：《Chemical Research in Chinese Universities》2025年第1期113-120,共8页高等学校化学研究(英文版)

基　　金：supported by the National Natural Science Foundation of China(Nos.22272201,21802168);the Shanghai Rising-Star Program,China(No.23QB1406300);the Project of China Petrochemical Corporation(Sinopec Group).

摘　　要：The preparation of zeolite utilizing commercially available organic compounds instead of complex and expensive ones is of practical significance.Herein,we report the synthesis of germanosilicate zeolite with UOS framework by utilizing a simple and commercially available compound 3-diethylamino-1-propanol(DEAP)as organic structure-directing agent(OSDA)under fluoride condition.The synthesis has been optimized by rational modification of the variables,including the Si/Ge molar ratios,the amount of DEAP and F−anions,the concentration of the synthesis gel and crystallization temperature.UOS zeolite materials were prepared with Si/Ge ratio in the range of 1–4.The physicochemical properties,including crystallinity,crystal morphology,chemical environment of framework elements,textural properties and acidity were characterized by multiple techniques.Ge atoms are proved to preferentially occupy the T sites in the double-four-ring(D4Rs)units.Compared to the isostructural IM-16 zeolite,the UOS zeolites prepared herein are of similar textural properties,such as specific surface area and micropore volume.The simple structure and commercial availability of DEAP endow this synthesis with a cost advantage over the conventional preparation of UOS zeolite,where an expensive imidazolium derivative is employed.

关 键 词：UOS zeolite Organic structure-directing agent Hydrothermal synthesis Physicochemical property 

分 类 号：O64[理学—物理化学]