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ITQ-24分子筛的合成及催化性能研究
引用本文:梁俊 汪莹莹 李相呈 刘闯 沈少春 付文华 王振东 杨为民. ITQ-24分子筛的合成及催化性能研究[J]. 石油炼制与化工, 2021, 51(10): 118-125
作者姓名:梁俊 汪莹莹 李相呈 刘闯 沈少春 付文华 王振东 杨为民
作者单位:1. 华东理工大学化工学院2. 中国石化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
基金项目:国家重点研发计划项目;国家自然科学基金委员会面上项目
摘    要:以1,1′-[1,4-苯双亚甲基]双[1-甲基吡咯烷]氢氧化物为有机结构导向剂(OSDA)制备了IT Q-24分子筛,系统考察了GeO2含量、OSDA用量、HF含量、晶化温度、搅拌速率对ITQ-24分子筛晶化的影响.并采用X射线衍射(XRD)、扫描电子显微镜(SEM)、氨程序升温脱附(NH3-TPD)和吡啶吸附红外光谱...

关 键 词:ITQ-24  分子筛  B-V氧化反应  环己酮  ε-己内酯
收稿时间:2021-05-31
修稿时间:2021-06-17

TECHNICAL AND ECONOMIC ANALYSIS OF S Zorb UNIT
Abstract:ITQ-24 zeolite was synthesized using 1,1’-[1,4-phenylenebis(methylene)] bis [1-methyl pyrrolidinium] hydroxide as organic structure-directing agent(OSDA). The effects of Ge content,OSDA amount,HF content,crystallization temperature,and stirring speed on the crystallization of ITQ-24 zeolite were investigated,respectively. X-ray diffraction(XRD),scanning electron microscope(SEM),temperature-programmed desorption of NH3(NH3-TPD)and Fourier transform infrared spectroscopy of pyridine adsorption(Py-IR)methods were carried out to characterize the obtained zeolites. The suitable molar compositionn(SiO2)∶n(GeO2)∶n(OSDA)∶n(H2O)for the crystallization of ITQ-24 zeolite is 1∶(0.2-0.5)∶0.3∶(5-20),and the optimum temperature is 170 ℃ under dynamic condition. The ITQ-24 zeolite has high hydrothermal stability and contains lots of weak and Lewis acid sites. In the oxidation reaction of cyclohexanone to ε-caprolactone,using ITQ-24 as catalyst,the ε-caprolactone selectivity reached 54.5% with 22.5% cyclohexanone conversion under the optimum temperature of 80 ℃.
Keywords:S Zorb unit  technical economy  characteristic analysis  
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