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DEVELOPMENT OF SEPARATION PROCESS WITH ADVANCED INORGANIC MEMBRANES

先进无机膜分离工艺的开发

基本信息

批准号：
10555274
负责人：
MOROOKA Shigeharu
金额：
$ 7.68万
依托单位：
KYUSHU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555274/
关键词：
INORGANIC MEMBRANE GAS SEPARATION MODULE ZEOLITE SILICA CARBON シリカ膜ゼオライト膜炭素膜細孔吸着透過

项目摘要

Preparation of high-performance inorganic membranes and the membrane module are important for the process design of membrane separation. In this study, we prepared the molecular-sieve inorganic membranes such as zeolite, silica and carbon membranes. The separation properties of these membranes were improved by conducing the pore size control and the surface modification. Also the separation performance of the membrane module consisted of hollow fiber membranes was simulated on the base of permeation data of the each membrane.Na Y-type zeolite membranes show a high COィイD22ィエD2/NィイD22ィエD2 selectivity of 20-40 for a mixed feed. COィイD22ィエD2/NィイD22ィエD2 selectivity of Y-type zeolite membranes that were ion-exchanged with K, Rb and Cs were higher than those of Na Y-type zeolite membrane. The adsorption behaviors of COィイD22ィエD2and NィイD22ィエD2 on the zeolite strongly influenced the selectivity of FAU-type zeolite membranes. Finally, the highest COィイD22ィエD2/NィイD22ィエD2 selectivity was obtained with alkali-added Y-type zeolite membranes.porous silica membranes was formed by a sol-gel technique on a porous alumina support tube using sol which were prepared from tetraethoxysilane and a substituted alkoxide. The substituted alkoxide were used as the template to control the pore size. The silica membranes showed high permeance and selectivity of hydrogen.The surface affinity of carbon membrane was modified by adding Ni, Mo or Pd complex in the precursor resign. The modification could improve the selectivity without decrease in permeasnce.As a results of the simulation for separation in the membrane module, FAU-type zeolite membranes showed the performance over polymeric membranes for the removal process of carbon dioxide from natural gas. Also the prepared silica membranes attained the practical performance on the hydrogen separation process. The metal-supported carbon membrane and zeolite membranes would be expected for catalytic membranes.

高性能无机膜的制备和膜组件的研制是膜分离工艺设计的重要内容。在本研究中，我们制备了分子筛无机膜，如沸石、二氧化硅和炭膜。通过对膜进行孔径控制和表面改性，提高了膜的分离性能。根据中空纤维膜的渗透数据，模拟了由中空纤维膜构成的膜组件的分离性能。对于混合进料，Na Y型分子筛膜表现出较高的COィイD22ィエD2/NィイD22ィエD2选择性20~40。与K、Rb、Cs离子交换的Y型分子筛膜的COィイD22ィエD2/NィイD22ィエD2选择性高于Na Y型分子筛膜。CO-ィイ-D22-ィエ-D2和N-ィイ-D22-ィエ-D2在沸石上的吸附行为对FAU型沸石膜的选择性有很大影响。以正硅酸乙酯和取代醇盐为原料，采用溶胶-凝胶法在多孔氧化铝支撑管上制备了多孔二氧化硅薄膜，获得了最高的COィイD22ィエD2/NィイD22ィエD2选择性。以取代醇盐为模板剂，控制孔径大小。在前驱体设计中加入Ni、Mo或Pd络合物改善了炭膜的表面亲和力。作为膜组件分离模拟的结果，FAU型分子筛膜在脱除天然气中二氧化碳的过程中表现出比聚合物膜更好的性能。所制备的二氧化硅膜在氢气分离过程中也达到了实用的性能。金属支撑炭膜和分子筛膜有望成为催化膜。