Development of Molecular Sieving Inorganic Membranes and Separation System for High Temperature Gases

高温气体分子筛无机膜及分离系统的研制

• 批准号: 05555214
• 负责人: MOROOKA Shigeharu
• 金额: $ 5.5万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555214/
• 关键词: Inorganic membrane; Gas separation; Palladium; Ceramic; Porous materials; Zeolite; Hydrogen; Carbon dioxide; 膜分離; ガス分離; ゾル-ゲル法; 細孔; 超微粒子; ガス透過

Inorganic membranes can be used for gas separation at high temperature in an oxidative atmosphere where organic membranes are not resistant. In preparing molecular sieving inorganic membranes with high permeability, the pore structure should be strictly controlled. In this study, ceramic and palladium thin membranes were formed by novel preparation methods, and gas permeability and thermal and chemical stability of the membranes were examined.Palladium thin membrane was formed in macropores of an alpha-alumina support tube by cross-flow CVD method. Hydrogen permeance and selectivity to nitrogen were respectively higher than 10^<-6> mol・m^<-2>s^<-1>Pa^<-1> and 1000. The membrane was resistant against hydrogen embrittlement and sulfur poisoning. Silica membrane was also prepared by the same procedure using tetraethylorthosilicate. The membrane was stable in steam and showed a selectivity of hydrogen to nitrogen higher than 1000. Furthermore, Silica-based microporous membrane was prepared by controlled pyrolysis of polycarbosilane coated on a gamma-alumina-modified support tube. The membrane showed a permselectivity of hydrogen to nitrogen higher than the Knudsen value and was usable up to 400ﾟC.Perovskite oxide membrane was prepared by sol-gel methods and slicalite membrane formed by hydrothermal synthesis, respectively. Carbon dioxide was preferentially permeated through these membranes because of the surface diffusion, but the CO_2 permselectivity was insufficient. Further pore-size control is needed for the industrial uses.

无机膜可以在氧化大气中进行气体分离，应严格控制孔结构。对氮的渗透性和对氮的选择性高于10^<-6> mol / m^<-1>和1000在蒸汽中稳定，并且显示出比1000的氢对氮的选择性。在氮的允许下涂层的聚碳硅烷的byrollysis与Knudsen值相比，在Dolycarbosilane上byrollysis，可在氮的允许下，并且可通过Holdoth Holth Synthesis，碳Dioxiders car dioxiders consed，可用于400个ETHOD和SLICALE MEMED。偏爱的这些膜的表面扩散率是不足的，但是CO_2验证率不足。

项目成果

草壁克己: "気体分離用無機膜のゾル-ゲル法による精膜" 膜. 19. 165-170 (1994)

Katsumi Kusakabe：“用于气体分离的无机膜的溶胶-凝胶法的精子膜”膜19。165-170（1994）。

諸岡成冶: "無機膜による高温ガス分離の現状" FC Report. 11. 9-16 (1993)

Seiji Morooka：“使用无机膜的高温气体分离的现状”FC 报告 11. 9-16 (1993)。

K. Kusakabe: "Porovs γ-Alumina Membrane Modified with Ultrafine Zirconia Particles Prepared by Reversed Micelle Method." Prep. Pap. An. Chem. Soc, Div. Fvel Clvem. 38. 352-357 (1993)

K. Kusakabe：“用反胶束方法制备的 Porovs γ-氧化铝膜”，《Prep Chem》，第 38 卷，Fvel Clvem。

K.Kusakabe: "Possibility of Carbon Dioxide Separation by Surface Diffusion in Inorganic Membrane" Hyomen. 32. 756-761 (1994)

K.Kusakabe：“通过无机膜表面扩散分离二氧化碳的可能性”Hyomen。

K.Kusakabe: "Development of Inorganic Thin Membranes for Gas Separation at Elevated Temperature" Kagaku Kogaku Symp.Ser. 41. 9-12 (1994)

K.Kusakabe：“用于高温气体分离的无机薄膜的开发” Kagaku Kogaku Symp.Ser。