JP2013059741A - 触媒担持担体とその製作方法 - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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Abstract
【解決手段】炭素系の導電性担体1の表面に触媒金属2が担持されてなる触媒担持担体の中間体3の懸濁液S1を用意する第1のステップ、懸濁液S1に酸化チタン前駆体4’(の懸濁液S2)を添加して加水分解し、300℃で焼成することにより、酸化チタン4が導電性担体1の表面に担持されてなる触媒担持担体10を得る第2のステップ、からなる触媒担持担体の製作方法である。
【選択図】図1
Description
本発明者等は、以下3種の方法で触媒担持担体を製作し、それぞれの触媒担持担体における触媒物性を測定するとともに触媒のXRD(粉末X線回折法)評価をおこなった。なお、実施例と比較例1,2の各製作法はいずれも、P30K(株式会社キャタラー製 30mass%担持Pt/C触媒)をベースとし、PtとTiO2のモル比が1:1となるように各薬液の投入量を調整(Pt26mass%、TiO212mass%)している。
上記Pt/C触媒の懸濁液に対して三塩化チタン(TiCl3)水溶液を滴下し、90℃に加熱しながら1時間加水分解をおこない、ろ過および洗浄後に乾燥させ、300℃で焼成した。
上記Pt/C触媒の懸濁液に対して三塩化チタン(TiCl3)水溶液を滴下し、pH調整をおこなって中和させ(pH=6)、ろ過および洗浄後に乾燥させ、300℃で焼成した。
上記Pt/C触媒の懸濁液に対してチタン酸テトライソプロピル(((CH3)2CHO)4TiEtOH)水溶液を滴下し、pH調整をおこなって中和させ(pH=6)、ろ過および洗浄後に乾燥させ、300℃で焼成した。
本発明者等は、上記する実施例の触媒粉体の水蒸気吸着脱離特性(70℃における特性)を評価するとともに上記する比較例3(酸化チタンが担持されていない触媒粉体)と比較する実験をおこなった。その結果(水蒸気吸着脱離曲線)を図5に示す。
Claims (2)
- 炭素系の導電性担体の表面に触媒金属が担持されてなる触媒担持担体の中間体の懸濁液を用意する第1のステップ、
前記懸濁液に酸化チタン前駆体を添加して加水分解し、300℃で焼成することにより、酸化チタンが前記導電性担体の表面に担持されてなる触媒担持担体を得る第2のステップ、からなる触媒担持担体の製作方法。 - 請求項1に記載の製作方法で製作され、アナターゼ型の結晶構造を有する酸化チタンを備えた触媒担持担体。
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