書誌事項
- タイトル別名
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- Changes in Reaction Rates and Structure of Solid Reactant Concerning the Iron Compounds in the UT-3 Thermochemical Hydrogen Production Cycle.
- UT-3 ネツカガク スイソ セイゾウ サイクル ノ Feケイ ハンノウ コタ
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抄録
Changes in reaction rates of Fe3O4 bromination and FeBr2 hydrolysis under cyclic operation of the UT-3 thermochemical water decomposition cycle were analyzed.<BR>The solid reactant was prepared from Fe3O4 powder and ZrSiO4 powder as binder. The reaction rate equations were determined as follows for the bromination of Fe3O4 and hydrolysis of FeBr2 in the 1st cycle.<BR>bromination : r [mol · m-3 · s-1] =-dCFe3O4 / dt<BR>= 1.5 × 10-3CHBr1.5CH2O-0.5CFe3O4<BR>hydrolysis : r [mol· m-3 · S-1] =-dCFeBr2 /dt<BR>= 0.018 CH2OCFeBr20.5<BR>In cyclic operation, the reaction rate constants of both reactions after 20 cycles were 1.4 times as large as those for the 1st cycle. Analysis of the pore distribution showed that a large amount of reactant Fe-compound in the pellet moved from pores of around 1 μm in diameter to newly appeared pores of around 10 μm during 20 reaction cycles. The BET surface area of Fe3O4 after 20 cycles was about twice as large as that for the 1st cycle. It was considered that these structure changes caused the changes in the reaction rate constants.
収録刊行物
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- 化学工学論文集
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化学工学論文集 20 (1), 74-80, 1994
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679487244672
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- NII論文ID
- 130000866038
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- NII書誌ID
- AN00037234
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- ISSN
- 13499203
- 0386216X
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- NDL書誌ID
- 3865556
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 使用不可