成果報告書詳細
管理番号20100000001865
タイトル*平成21年度中間年報 グリーン・サステイナブルケミカルプロセス基盤技術開発/規則性ナノ多孔体精密分離膜部材基盤技術の開発 11
公開日2011/1/25
報告書年度2009 - 2009
委託先名国立大学法人山口大学
プロジェクト番号P09010
部署名ナノテクノロジー・材料技術開発部
和文要約和文要約等以下本編抜粋:1.研究開発の内容及び成果等 イソプロピルアルコール脱水用ゼオライト膜の製膜条件の検討と透過物性の評価 イソプロピルアルコール脱水用分離膜の開発を目的に、T型(ERI/OFF)、Y型(FAU)およびモルデナイト(MOR)の規則性ナノ多孔体膜合成のための水熱反応条件(反応温度、圧力、原料組成、濃度等)の検討とその分離性能の評価をおこなった。
(1)T型ゼオライト膜の製膜と透過物性評価 図1にT型ゼオライト膜の製膜手順を示す。膜は多孔質支持体上に多結晶体として製膜出来た。SEM観察によれば、結晶は針状晶で支持体との界面に緻密層が形成されていた。
英文要約Title: Development of Fundamental Technologies for Green and Sustainable Chemical Processes. Green and sustainable chemistry/fundamental development of ordered-nanoporous membranes for highly-refined separation technology (FY2009-FY2011) FY2009 Annual Report
Zeolite membranes are expected to play an important role in the separation of variety of materials used in the chemical and petrochemical industries. The most significant progress was achieved by A-type zeolite membrane for the pervaporation dehydration in our laboratory. In this study, T-type, FAU, and MOR membranes have been prepared and used for the pervaporation of water/isopropanol separation. These zeolite membranes were synthesized in various synthetic conditions and were checked for the pervaporation performance. The membranes were prepared on tubular porous mullite supports by the hydrothermal synthesis. Seeding was carried out by rubbed the support with zeolite powder. A gel used for the synthesis was prepared by mixing Si and Al solution. The seeded tubes were then vertically placed into synthesis reactor. Hydrothermal treatment carried out at 363-423 K for a specified reaction time. After reaction, the support was taken out, washed with water and dried. The zeolite layer formed was characterized by XRD and SEM. The crystallization of zeolite membranes are strongly influenced by hydrothermal temperature and time. A rise in temperature will increase the grown rate of zeolite crystals with a certain time. High membrane performances were observed in pervaporation of water/isopropanol separation. For example, the high water/isopropanol separation factor of 10000 with a high flux of 2.5 kg/(m2h) for a feed concentration of 10 wt.% water at 348 K was obtained through the zeolite T membrane synthesized on the micro-sized-zeolite T seeded tube at 423 K for 35 h. Continuous and dense Y zeolite membranes were also synthesized by two steps of heating procedure, such as at first a high temperature (413 K) and then a lower temperature (373 K). This Y membrane showed a high permeation flux (4.7 kg/(m2h)) with high separation factor (270). MOR membranes with high performance were also studied.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る