Oxygen bubbles

The procedure most commonly employed (NF M 07-047 or ASTM D 2274) Is to age the diesel fuel for 16 hours while bubbling oxygen into it at 95°C. The gums and sediment obtained are recovered by filtration and weighed. There is no official French specification regarding oxidation stability however, in their own specifications, manufacturers have set a maximum value of 1.5 mg/100 ml. 

Write a balanced net ionic equation to show the formation of iodine by bubbling oxygen gas through a basic solution that contains iodide ions. 

From singlet oxygen reaction with silyl enol ethers When a carbon tetrachloride solution of 1-methoxy-l-trimethylsiloxy-l-alkene in the presence of tetraphenylporphyrin and bubbling oxygen is irradiated with a 400-W Na lamp, a-trimethylsilyl peroxyesters were obtained in good yield (equation 11) . ... 

A series of functionalized alkenes has been subjected to selective epoxidation reactions. Oxidation of perfluorinated vinyl polyethers by bubbling oxygen through the liquid that contains a catalytic amount of a Lewis acid, e.g. antimony(V) fluoride, results in the formation of acid fluorides together with a smaller amount of C = C bond cleavage.76 Perfluorinated pentaaIkyI-2.3-dihydrofuran 38, an example of an unsaturated cyclic ether that is quite stable owing to perfluoroalkylation. is epoxidized by hypochlorite to the product 39 at 45 C.62... 

H.15 Sodium thiosulfate, which as the pentahydrate, Na2S203-5H20, forms the large white crystals used as photographer s hypo, can be prepared by bubbling oxygen through a solution of sodium polysulfide,... 

Set up a cell with two iron electrodes connected through a voltmeter and bubble oxygen onto one electrode. From the polarity of the cell, students can deduce the direction of the electron flow and analyse the cell reactions in terms of electron transfer. R... 

As to the formation of substantial amount of /V-oxides 275, one can assume that stabilization of aH-adduct 276 proceeds not only via intramolecular reduction of the nitro group (276 to 277 to 274), but also via air oxidation (276 to 278 to 275) as shown in Scheme 80. Indeed, when the experiment was performed in an inert atmosphere the yield of A-oxide 275 strongly decreased, while bubbling oxygen through the mixture led to the formation of 275 predominantly. 

Direct irradiation of the /3-aziridinylacrylonitrile (Z)-172 solution in acetonitrile under bubbling oxygen with a low-pressure mercury lamp in a quartz test tube at room temperature afforded dioxazolidine 173 (Equation 26)... 

Particular attention is addressed to the permeate flux and to this purpose some preliminary experiments were realized on a different configuration of membrane photoreactor with a submerged membrane module located separately from the photoreactor. Bubbled oxygen on the membrane surface has the roles to reduce the catalyst deposition, to increase the flux through the membrane and to facilitate the photocatalytic reaction. 

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