纳米SAPO-34分子筛的制备与表征

发布时间：2018-01-16 08:35

  本文关键词：纳米SAPO-34分子筛的制备与表征　出处：《硅酸盐通报》2015年04期 　论文类型：期刊论文

  更多相关文章： 纳米SAPO-分子筛 相对结晶度 水热法 粒径

【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)∶0.6(SiO2)∶4(TEAOH)∶107(H2O),室温陈化72h,200℃晶化时间为24h时,合成的纳米SAPO-34分子筛相对结晶度较高,平均粒径约为255nm。
[Abstract]:Nano-sized SAPO-34 molecular sieves were prepared by hydrothermal synthesis. The effects of crystallization time, aging time and water content on the synthesis of nano-sized SAPO-34 molecular sieves were investigated. XRD was further used. SEM was used to characterize the synthesized molecular sieve. When the molar ratio of Al _ 2O _ 3 to P _ 2O _ 5 is 1: 1, P _ 2O _ (5): 0.6 / Sio _ (2) O _ (2) O _ (2): 1 / 10 ~ (7) H _ 2O, aging at room temperature for 72 h. When the crystallization time at 200 鈩，

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