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ID 46483
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別タイトル
Estimation of Proton Mobility in HZSM-5 Type Zeolite Films by Complex Impedance Method <Note>
著者
栗田 聡
王 正宝
川上 雄資
上松 和義
佐藤 峰夫
NDC
化学
抄録(英)
The delocalization of protons in HZSM-5 type zeolite films was investigated by the complex impedance method. The conductivities under various water vapor pressures were calculated from both the Cole-Cole plot analysis and the impedance at 1 kHz. The conductivity of HZSM-5 (Al) zeolite film with 170 of SiO2/Al2O3 ratio was strongly dependent on the water vapor pressure and increased with an increase inthe vapor pressure. On the other hand, the conductivities of the silicalite film (SiO2/Al2O3 ratio > 5000) and the pellet prepared by compressing the powdery HZSM-5 zeolite with 173 of SiO2/Al2O3 ratio hardly increased with the water vapor pressure. The conductivities of HZSM-5 type metallosilicates (HZSM-5 (Ga) and HZSM-5 (Fe)) films were also measured. From the results obtained, it was concluded that (1) the acidic sites associated with the framework aluminums are the active centers for the proton conductivity, (2) adsorbed water molecules are responsible for the conduction and (3) the polycrystalline zeolite film is very effective for estimation of proton mobility.
掲載誌名
日本化学会誌 : 化学と工業化学
1997巻
6号
開始ページ
456
終了ページ
460
出版年月日
1997-06-10
出版者
日本化学会
ISSN
0369-4577
NCID
出版者DOI
言語
日本語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1997 The Chemical Society of Japan
関連情報URL
部局名
工学研究科