纳米SAPO34分子筛的制备与表征.doc

纳米SAPO-34分子筛的制备与表征
龙丽1, 肖松2,李志毅1,齐士豪1,门勇男1,赵文波1,刘艳娜1基金项目:国家自然科学基金(21301079),昆明理工大学研究基金项目(kkz3201205022),昆明理工大学创新训练项目(201210674206, 201310674222),昆明理工大学分析测试基金(20140805, 20140438, 20140768, 20140809)
作者简介:龙丽(1988-),女,在读硕士研究生
†通信作者:刘艳娜(1981-),女,博士,. E-mail:nuo2004lyn@
(,云南昆明 650500;
,云南昆明 650093)
摘要:本文采用水热合成法制备纳米SAPO-34分子筛,并考查了晶化时间、陈化时间、水含量对纳米SAPO-34分子筛合成的影响,进一步采用XRD、SEM对合成的分子筛进行表征。实验结果表明,在一定范围内,当物料摩尔配比为1(Al2O3):2(P2O5):(SiO2):4(TEAOH):107(H2O),室温陈化72 h,200 oC晶化时间为24 h时,合成的纳米SAPO-34分子筛相对结晶度较高,平均粒径约为255 nm。
关键词:纳米SAPO-34分子筛;相对结晶度;粒径
中图分类号: 文献标志码:A
Synthesis and Characterization of Nanosized SAPO-34
LONG Li1; XIAO Song2, Li Zhi-yi ; QI Shi-hao ;MEN Yong-nan ; ZHAO Wen-bo; LIU Yan-na1
(1. Faculty of Chemical Engineering, Kunming University of Science and Technology; Kunming; 650500, China;
2. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology; Kunming; 650093, China)
Abstract: Nanosized SAPO-34 molecular sieves were synthesized by hydrothermal method and the influences of crystallization time, aging time, water content on the product were discussed in this paper. The prepared samples were characterized by XRD and SEM. The results showed that the prepared nanosized SAPO-34 molecular sieves were with high relative crystallinity and the average particle size was about 255 nm w