| Autor: |
Timofeeva, M. N., Ayupov, A. B., Volodin, A. M., Pak, Yu. R., Volkova, G. G., Echevskii, G. V. |
| Předmět: |
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| Zdroj: |
Kinetics & Catalysis; Jan2005, Vol. 46 Issue 1, p123-127, 5p |
| Abstrakt: |
The surface acidity of H3PW12O40 and NaxH3-xPW12O40(x = 1-3) was studied using the adsorption of 2,2',6,6'-tetramethyl-4-oxopiperidine-1-oxyl (TEMPON) and 2,2',6,6'-tetramethyl-4-hydroxypiperidine-1-oxyl (TEMPOL) radicals. It was found that the amount of surface proton sites determined from the adsorption of TEMPON decreased with the degree of substitution of Na+ cations for protons. A correlation between amount of strong surface proton sites and catalytic activity of NaxH3-xPW12O40(x = 0-3) in the dealkylation reaction of 2,6-di-tert-butyl-4-methylphenol was found. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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