成果報告書詳細
管理番号20140000000106
タイトル*平成25年度中間年報 固体高分子形燃料電池実用化推進技術開発 基盤技術開発 定置用燃料電池システムの低コスト化のためのMEA高性能化 (高耐久性CO選択メタン化触媒の開発)
公開日2015/11/25
報告書年度2013 - 2013
委託先名国立大学法人山梨大学 パナソニック株式会社 三井金属鉱業株式会社 東京濾器株式会社
プロジェクト番号P10001
部署名新エネルギー部
和文要約
英文要約Title: Development of PEFC Technologies aiming for Practical Application/Base Technology/R&D on PEFC components for reducing cost and improving performance of residential systems (FY2013-FY2014)FY2013 Annual Report

(1) Development of the fuel processing system (Panasonic)
In order to develop the fuel processing system (FPS) using the selective CO methanation (SCM) catalyst, catalyst durability on continuous and start-up/shut-down operation tests, and thermal analysis of the FPS were studied. The results of durability test showed that temperature range over which CO concentration maintains below 10 ppm after durability test was insufficient. The results of thermal analysis showed that the degree of CO removal at outlet was insufficient for the requirement of the current FPS. To use the SCM catalyst for the FPS, it is concluded that improvement of the catalysts and thermal design for the catalysts was necessary.
(2) Development of highly durable catalyst in high concentration CO (Univ. Yamanashi)
We found Fe addition to the mesoporous silica (MS) coated catalyst is effective for suppression of hydrocarbon accumulation. We also found that the coating layer composed of mesoporous alumina or mesoporous zirconia was remarkably stable at high concentration steam. The deactivation mechanism of the MS coated catalyst during the reaction at high CO concentration (>0.5%) was studied. The deactivation rate increased with the increase of CO concentration. The deactivation mechanism at high concentration was same with the one at low concentration (<0.5%).
(3) Development of large scale production of catalysts(Mitsui Mining & Smelting)
The key point of the high catalyst performance of MS catalyst is the uniform coating of the nickel-AlVOx surface by MS. Moreover, in order to coat a metal honeycomb uniformly, the controlling of the particle size distribution of MS catalyst is required. To optimize the manufacturing process of the catalyst, the bead milling in wet condition before MS coating was examined. In order to develop the highly active and durable catalyst with lower cost, the core shell (SiO2@Ni) catalyst prepared by the simplified process without using Al2O3 support was developed. The core-shell catalyst showed excellent activity, selectivity and durability.
(4) Development of metal-honeycomb catalyst(Tokyo Roki)
The effect of dividing of the MS/Ni/AlVOx-coated metal-honeycomb catalyst into two portions (an upstream part and a downstream part) was evaluated. CO diffusion occurred in the open space
between the two portions enhanced the rate of the SCM reaction compared to the single honeycomb body tested at the same space velocity. By the uniform coating obtained by the improved condition and the usage of a honeycomb with hexagonal cells, CO concentration was reduced to 18 ppm. The employing of the metal-honeycomb with boring holes on the cell-walls improved the CO diffusion and CO concentration was reduced to less than 10 ppm.
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