对载体进行预涂层处理来制备MFI取向沸石分子筛膜
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- 英文论文题名：To precoating the carrier to the preparation of MFI zeolite molecular sieve membrane
- 论文作者：张梦瑶 ; 姜南哲
- 英文论文作者：Mengyao Zhang ; Nanzhe Jiang ; College of Science ; Yanbian University ; College of Engineering ; Yanbian University
- 年：2016
- 作者机构：延边大学理学院化学系;延边大学工学院化工系;
- 论文关键词：玻璃珠子 ; 复合涂层 ; 分子筛膜
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十二分会： 多孔功能材料
- 语种：中文
- 分类号：TB383.2;O643.36
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十二分会 ; 多孔功能材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：108k
- 原文格式：D
- 会议级别：全国
摘要
MFI型沸石膜(Silicalite-1和ZSM-5两类)具有与分子尺寸相近的孔道体系,能耐高温、化学及生物侵蚀,可在分子级别上进行物质分离,实现催化反应分离一体化,在环保、石油、生物化工等领域具有广泛的应用~[1]。但是不容易得到均匀、连续、无裂痕的分子筛膜。我们采用玻璃珠子为载体在其表面进行壳聚糖复合溶液进行涂层,其优点是在低成本条件下得到均匀、连续、无裂痕的分子筛膜。本实验主要采用玻璃珠子为载体,在载体上旋涂一层壳聚糖-氧化硅复合涂层后进行分子筛膜的合成,我们调节壳聚糖的含量使其均匀分布在玻璃片表面,有利于分子筛膜在玻璃珠子表面生长~[2]。通过SEM、XRD表征发现调节分子筛膜合成液的比例、晶化时间、载体放置方式等得到了均匀、连续、无裂痕的分子筛膜。通过固定床的反应对催化性能进行测试,证实其具有良好的催化性能。
MFI zeolite membrane(Silicalite 1 and ZSM-5) has a similar to the molecular size of channel system,high temperature,chemical and biological erosion,which in environmental protection,petroleum,biological,chemical and other fields have a wide range of applications.We use glass beads as the carrier in the surface of chitosan coating compound solution.Adjusting the molecular sieve membrane found by SEM,XRD characterization of synthetic fluid ratio,crystallization time and carrier to get the uniform,continuous,no cracks of molecular sieve membrane.By the reaction of fixed bed catalytic performance testing,confirmed that it has good catalytic performance.
MFI zeolite membrane(Silicalite 1 and ZSM-5) has a similar to the molecular size of channel system,high temperature,chemical and biological erosion,which in environmental protection,petroleum,biological,chemical and other fields have a wide range of applications.We use glass beads as the carrier in the surface of chitosan coating compound solution.Adjusting the molecular sieve membrane found by SEM,XRD characterization of synthetic fluid ratio,crystallization time and carrier to get the uniform,continuous,no cracks of molecular sieve membrane.By the reaction of fixed bed catalytic performance testing,confirmed that it has good catalytic performance.
引文
[1]Liu Y.;Li Y.;Cai R;Chem.Commun 2012,48:6782
[2]Liu Y.;Li S.;Yang W.;J.AM.CHEM 2010,132:1768
[2]Liu Y.;Li S.;Yang W.;J.AM.CHEM 2010,132:1768