论文总字数：16573字

摘 要

第一章 绪论 1

1.1 研究背景 1

1.2 膜分离技术 1

1.2.1 传统分离技术 2

1.2.2 渗透汽化膜分离技术 3

1.3 分子筛膜介绍 4

1.3.1 分子筛介绍 4

1.3.2 NaA型分子筛膜 4

1.3.3 MOR分子筛膜 5

1.3.4 T型分子筛膜 5

1.4 丁醇脱水的研究现状 6

1.5研究内容和目的 6

第二章 实验与表征 8

2.1 实验所用试剂与仪器设备 8

2.2分子筛膜的制备 8

2.2.1分子筛的制备 8

2.2.2膜的制备 9

2.2.3 膜的测试与表征 9

第三章 渗透汽化分离实验 13

3.1渗透汽化分离实验步骤 13

3.2实验结果与数据分析 13

3.2.1 不同温度对于分子筛膜分离性能的影响 13

3.2.2 分子筛膜稳定性的分析 15

第四章 结果讨论与展望 17

4.1 结论 17

4.2 展望 17

参考文献 18

致谢 20

摘要

分子筛膜具有良好的热化学稳定性和规则的微孔结构，被广泛应用于有机溶剂分离中，通量较高且性能稳定的分子筛膜的制备目前已成为化工领域的热门研究课题之一。而渗透汽化分离技术具有工艺条件温和、节能绿色环保等优点，目前显示出了强大的生命力，在分离单元操作群中作为后起之秀出现。

本文着重研究了NaA型分子筛膜、T型分子筛膜、MOR型分子筛膜这三种分子筛膜。NaA型分子筛膜是目前亲水性最强的分子筛膜，但其耐酸性能较差且膜稳定性较差。T型分子筛膜在分离水/有机物混合体系时表现出良好的分离性能，这使得其既具有次于NaA型分子筛膜的亲水性又有一定耐酸性，从而保证了在酸性环境中的分离稳定性。而MOR型分子筛膜与NaA型分子筛膜和T型分子筛膜比，具有更强的耐酸性，但其渗透通量普遍较低，是适合含酸有机溶液脱水的候补。

本次课题主要致力于NaA型分子筛膜、MOR型分子筛膜和T型分子筛膜对正丁醇/水体系渗透汽化分离性能的研究，分析探究影响分离性能的因素。在相同条件下，NaA型分子筛膜的渗透汽化分离效果较好，膜稳定性和寿命也较好。本研究为丁醇/水体系的渗透汽化分离应用领域的拓展提出了新思路。

关键词：分子筛膜 渗透汽化 丁醇/水体系 分离性能

Abstract

Zeolite membrane have a regular microporous structure and good thermochemical stability and are widely used in organic solvent separation. The preparation of molecular sieve membranes with no defects, high throughput and high selectivity has now become common in the fields of chemical engineering and materials science. The pervaporation separation technology has the advantages of mild process conditions, energy saving and environmental protection.It currently shows strong vitality. It appears as a rising star in the separation unit operation group.

This paper focuses on three molecular sieve membranes, namely NaA zeolite membrane, T type molecular sieve membrane and MOR zeolite membrane. NaA zeolite membrane is currently the most hydrophilic mo-lecular sieve membrane, but its acid resistance is poor and the membrane stability is poor. T zeolite membrane shows good separation performance when separating water / organic mixed system, which makes it not only less hydrophilic than NaA zeolite membrane but also has certain acid resistance, thus ensuring stable separation in acid environment Sex. Compared with NaA zeolite membrane and T zeolite membrane, MOR zeolite membrane has stronger acid resistance, but its permeation flux is generally lower, which is suitable for the dehydration of acid-containing organic solution.

This project is mainly devoted to the research of NaA zeolite membrane, MOR zeolite membrane and T zeolite membrane on the pervaporation separation perform-ance of n-butanol / water system and analyzes the factors affecting the separation pe-rformance. Under the same conditions, the pervaporation separation effect of NaA zeolite membrane is better, and the membrane stability and life are also better. This study provided a new strategy for the expansion of the butanol / water system as a pervaporation separation application field.

KEYWORDS: Zeolite membrane;Pervaporation;Butanol / water system;Separation performance

第一章 绪论

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