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一种含锌MFI分子筛的合成与表征 被引量:2

Synthesis and Characterization of a Novel Framework Zinc-substituted MFI Zeolite
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摘要 利用其它元素部分地同晶置换分子筛骨架中的硅、铝或磷,可得到含杂原子的分子筛.在骨架中引入二价锌离子,能使分子筛的离子交换容量得到很大的提高,其潜在的吸附容量也有很大的提高.这种潜在的性能可应用于变压吸附气体分离.同时含锌分子筛还是性能优异的催化剂,在碳氢转换、芳香化反应及催化裂解等过程中具有很高的催化活性. A suitable synthesis condition of framework zinc-substituted MFI zeolite was obtained and first reported in this paper.The molar ratios was as follows: 0.3Na2O/0.08Zn(Ac)2/SiO2/0.15TPAOH/0.12 citric acid/100H2O,the reaction was carried out at 200 ℃ for 7—10 d.The synthesized sample was characterized with XRD,^29Si MAS NMR and EXAFS.The results show that the synthesized sample is MFI zeolite.^29Si MAS NMR and EXAFS indicate that Zn atoms have been incorporated into the framework.
出处 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2011年第3期494-496,共3页 Chemical Journal of Chinese Universities
基金 国家自然科学基金(批准号:20890122 20721063)资助
关键词 含锌骨架 MFI分子筛 扩展X射线吸收精细结构(EXAFS) Framework zinc-substitute MFI zeolite Extended X-ray absorption fine structure spectroscopy(EXAFS)
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同被引文献31

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