Oxidation of propane over ammonium-transition metal mixed keggin phosphomolybdate salts

来源 :Journal of Natural Gas Chemistry | 被引量 : 0次 | 上传用户:Leechen17008
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Mixed ammonium-transition metal salts with formula of (NH4)xMyHzPMo12O40 (M = Ni2+, Co2+ or Fe 3+) denoted as MPMo12 have been investigated for the oxidation of propane, with molecular oxygen, at temperature range between 380℃ and 420℃ after in-situ pre-treatment performed at two heating rate of 5 or 9℃/min. They were characterized by BET method, XRD, UV-Vis and IR techniques. The catalysts were found to be active in the propane oxidation and selective to propene or acrolein, in particular for samples pre-treated with the heating rate of 9℃/min. FePMo12 was found to be a more active catalyst for propene (17.2% yield) with minimal over deep oxidation (0.3% yield in COx). Mixed ammonium-transition metal salts with formula (NH4) xMyHzPMo12O40 (M = Ni2 +, Co2 + or Fe3 +) as MPMo12 have been investigated for the oxidation of propane, with molecular oxygen, at temperature range between 380 ° C and 420 ° C after They were characterized by BET method, XRD, UV-Vis and IR techniques. The catalysts were found to be active in the propane oxidation and selective to propene or acrolein, in particular for samples pre-treated with the heating rate of 9 ° C / min. FePMo12 was found to be a more active catalyst for propene (17.2% yield) with minimal over deep oxidation (0.3% yield in COx).
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