Liquid phase benzylation of toluene using benzyl alcohol over iron promoted sulfated zirconia |
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Authors: | Suja Haridas C.S. Deepa K Sreejarani Sankaran Sugunan |
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Affiliation: | (1) Boreskov Institute of Catalysis, Pr. Ak. Lavrentieva 5, Novosibirsk, 630090, Russia |
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Abstract: | Concentrated (0.2 M) aqueous solutions of HP-acids, such as H3+x+mPVIV mVV x-mMo12-xO40 and their analogues with an excess VO2+ cation, are oxidized by dioxygen at 343 K and atmospheric pressure through intermediate active complexes (IAC) [Hx+m-1PVIV mVV x-mMo12-xO40 4 -] · [VO2+]y · O2, where m + y ≥ 3. The electron transfer to the coordinated O2 molecule inside AC is the limiting stage at high m. At low m, the formation of IAC becomes the limiting stage that results in a sharp decrease in the oxidation rate. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | Heteropoly acids dioxygen |
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