成果報告書詳細
管理番号20110000001401
タイトル*平成22年度中間年報 平成21~23年度「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/副生ガス高効率分離・精製プロセス基盤技術開発/多孔性金属錯体を利用したCO2の高効率分離・精製プロセスの基盤技術開発」
公開日2011/8/30
報告書年度2010 - 2010
委託先名国立大学法人京都大学 大学共同利用機関法人自然科学研究機構分子科学研究所 株式会社クラレ 昭和電工株式会社 東洋紡績株式会社 昭栄化学工業株式会社
プロジェクト番号P09010
部署名環境部
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
1~1.まえがき
本プロジェクト「多孔性金属錯体を利用したCO2の高効率分離・精製プロセスの基盤技術開発(委託)」は、高純度、低コスト、低エネルギーで精製できる革新的な吸着材料(多孔性金属錯体、以下、PCP と略す)に関する基盤技術開発と、濃縮された副生ガスを有用な化学品に転換できるクリーンなプロセスを確立するための基盤技術の構築を目標とし、国立大学法人京都大学、大学共同利用機関法人自然科学研究機構分子科学研究所、株式会社クラレ、昭和電工株式会社、東洋紡績株式会社、および昭栄化学工業株式会社とが共同で推進している。平成22 年度(2 年目)の成
果を以下に報告する。
1~2.研究の目標
中間評価がある平成23 年度末までに、本研究開発では、化学プロセス、石油化学プロセス等の生産プロセスから発生するCO2 等の副生ガスを、
(1) マイルドな条件で効率よく吸着、脱離することで高濃度に濃縮された副生ガスを、高純度・
低コスト・低エネルギーで精製できる高機能PCP に関する基盤技術と、
(2) (1)の基盤技術等から濃縮された副生ガスを有用な化学品に転換できるクリーンなプロセス
を確立するための基盤技術
との確立に目処を付け、その後の2 年間で同基盤技術を確立することを目標としている。
英文要約Regarding CO2 separation, Kyoto University has worked optimization of gas separation performance over CH4 or C2H4 by pore structure investigation. By use of concept of solid solution type PCP with flexible characteristic, fine tuning of gas adsorption pressure has been succeeded which is significant for PSA (pressure swing adsorption process). Kyoto University also worked on elucidation of adsorption mechanism of siloxane D4. Series of PCPs with similar structural motifs were employed to make clear the adsorption property and obtained the strategy for selective adsorption. Kuraray has focused on development of separation instrument under gas flowing condition (Breakthrough curve measurement) which was direct to the PSA process and obtained two PCP compounds having high performance of CO2 separation over CH4 under gas flowing condition and ambient pressure/temperature. Kuraray has also developed kilogram-scale synthesis and pellets preparation of selected PCPs for PSA process. Showa Denko has found out three optimized PCP compounds representing selective sorption of CO2 over C2H4 at ambient conditions. They have suitable pressure for adsorption and moderate heat of adsorption both of which are well working for PSA process. Kuraray and Showa Denko have intensively developed prototype PSA system for evaluation of separation properties of selected PCP compounds with large scale and the system is now ready for working filled with PCP compounds. Toyobo has synthesized PCPs which show high siloxane D4 capturing and succeeded in preparing three strong candidates. Considering that the siloxane D4 capture process is worked under existence of humidity or other gas species such as CO2, CH4, Toyobo has optimized PCP compounds representing not only high capture ability for siloxane D4 but also avoiding the co-adsorption of H2O and other gasses. Eventually at least one PCP compound was discovered to satisfy the process condition and also developed scale-up process and granulation. For the project of CO2 conversion, initially we have designed and developed PCP hybridized catalysts. In order to develop PCP-catalytic composites for a high-efficiency CO2 conversion, we chose 4 kinds of PCP having high CO2 adsorption capacity, high thermal and electrochemical stabilities for hybridization of molecular catalysis. We have prepared a PCP-catalytic composite by liquid phase mixing procedure and performed three-dimensional electron tomography by transmission electron microscopy to investigate the state of composite in PCP matrix. The images were revealed that PCP and the catalysts species are homogeneously dispersed at the molecular level and are located on PCP surface. We also developed CO2 reduction-hybridized catalyst system to work under mild condition. And the current efficiency for CO2 conversion was 70% which is over the targeted value of NEDO. The structure of PCP hybridized catalysts maintained before/after CO2 reduction performance evaluation. In addition, we fabricated some PCPs by a thermal reaction spray method. In order to obtain guidelines on the synthesis of PCP hybridized materials by a thermal reaction spray method, we have developed PCP hybridized materials with metal nanoparticles as a CO2 reduction catalyst. Considering synthesis methods or some conditions (temperature, treatment time, metal lording concentration), we successfully synthesized functional PCPs with well-dispersed nanosized metal.
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