Selective Production of Intermediate Compounds of Reaction In Series by Use of Catalytic Zeolite Membrane Reactor

催化沸石膜反应器选择性生产串联反应中间体化合物

基本信息

批准号：
13650829
负责人：
MASUDA Takao
金额：
$ 2.3万
依托单位：
HOKKAIDO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650829/
关键词：
Zeolite membrane Catalytic membrane Hydrophilic membrane Reaction and separation Pervaporation Control of pore size Acetic acid Reaction of methanol MF1型ゼオライト膜構造触媒 MTOの反応ゼオライト膜細孔径制御

项目摘要

Zeolites are crystalline alumino-silicate, and widely used as catalysts and adsorbents. MFI-type zeolite has fine pores within its crystals, the diameter of which is almost the same as the molecular size of benzene. Hence, the zeolite shows high molecular-sieving effect. When the zeolite is succeeded to be prepare in the shape of membrane, the membrane can enable to realize new separation and simultaneous reaction and separation with high performance. The main objective of this project is to development of MFI-type zeolite catalytic membrane, and to apply it to high separation and simultaneous reaction and separation processes. We obtained the following results through this research work :In fiscal year of 2001 :(1) MFI-type catalytic membrane was succeeded to prepared without any pin-holes by a new method, well-mixed hydrothermal synthesis.(2) Hydrophilic zeolite membrane with high acid-proof was successively prepared by the liquid phase oxidation method. This membrane allows the permeation for only water.(3) We developed a new method, called "Catalytic Cracking of Silane (CCS) method", for controlling the pore diameter and the location of acid sites distribution of zeolite. When diethoxymethyl-silane was employed for the CCS method, the effective pore diameter was decreased in pores. On the other hand, tri-phenyl silane was used, the effective pore diameter was decreased only at pore months.In fiscal year of 2002 :The CCS method with tri-phenyl sliane was applied to contorol the distribution of active sites (acid sites) on the zeolite membranes, to prepared the membrane with acid sites only within pores. When the reaction of methanol was conducted by use of this treated membrane, useful olefins were produced at selectivity above 85% under the conditions of the conversion of methanol of around 0 to 70% and zero pressure drop between the permeate and the feed sides.

沸石是结晶硅铝酸盐，广泛用作催化剂和吸附剂。 MFI型沸石晶体内有细孔，其直径几乎与苯分子大小相同。因此，沸石表现出高分子筛分作用。当成功地将沸石制备成膜的形状时，该膜能够实现新的分离以及高性能的同时反应和分离。本项目的主要目标是开发MFI型沸石催化膜，并将其应用于高分离度、同时反应和分离的过程。通过这项研究工作，我们取得了以下成果： 2001财年：（1）采用混合水热合成新方法成功制备出无针孔的MFI型催化膜。（2）亲水性沸石膜采用液相氧化法相继制备了高耐酸性能。该膜只允许水渗透。(3)我们开发了一种新方法，称为“硅烷催化裂化(CCS)法”，用于控制沸石的孔径和酸位点分布的位置。当二乙氧基甲基硅烷用于CCS方法时，孔中的有效孔径减小。另一方面，使用三苯基硅烷，有效孔径仅在孔隙月份减小。2002财年：采用三苯基硅烷的CCS方法来控制活性位点（酸位点）的分布在沸石膜上，制备仅在孔内具有酸性位点的膜。当使用该处理过的膜进行甲醇反应时，在甲醇转化率约0至70％以及渗透物和进料侧之间压降为零的条件下，以高于85％的选择性生产有用的烯烃。