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