The NO Chemisorption Activity of δ-FeOOH Having Different Magnetic Properties
| Autor: | K. Kaneko, K. Inouye |
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| Jazyk: | angličtina |
| Rok vydání: | 1986 |
| Předmět: | |
| Zdroj: | Adsorption Science & Technology, Vol 3 (1986) |
| Druh dokumentu: | article |
| ISSN: | 0263-6174 2048-4038 02636174 |
| DOI: | 10.1177/026361748600300103 |
| Popis: | δ-FeOOH samples of various magnetic susceptibilities from paramagnetic to ferromagnetic region have been prepared. The correlation rate for paramagnetic NO molecules and magnetic susceptibility of the δ-FeOOH samples have been studied. In addition the electrical conductivity of the δ-FeOOH samples was measured at 303 K and various frequencies (d.c., 200–10 M Hz). The NO chemisorption rate decreases with increasing the magnetic susceptibility of δ-FeOOH. The paramagnetic δ-FeOOH of small crystallite size has the highest chemisorption rate of all FeOOH modifications. The rate-determining step in the NO chemisorption is assumed to be an electron-transfer from δ-FeOOH crystal to an NO molecule, which is governed by the magnetic ordering of spins in δ-FeOOH. |
| Databáze: | Directory of Open Access Journals |
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