Water with nitrogen dioxide

McKee Mid Wilhelm [92] found that the highest yield of nitration of benzene with nitrogen dioxide in the vapour phase was obtained at 310°C. In the presence of activated silica the yield was higher than that obtained without a catalyst Mid could Mnount to 83.6%. Nitrophenol was also formed in a yield rising with temperature, so that at 330°C it was the principal reaction product. The authors supposed that the catalytic action of activated silica was probably a specific one Mid did not consist only in binding the water formed during the nitration process. 

Nitrosyl chloride can be obtained by direct combination of chlorine with nitric oxide, by the reaction of NOHSO4 or NaNOj with HCl, or as a by-product in the preparation of KNOs from KCl and NO2, in which KCl is moistened with 2.4% water. Nitrosyl bromide is usually prepared by direct combination of bromine nuth nitric oxide. Nitrosyl chloride and nitrosyl bromide can be prepared by reacting the appropriate potassium halide with nitrogen dioxide at room temperature. The reaction rate increases with increased size of the halide, and NOCl and NOBr can be obtained in a reasonable length of time by powdering the halide salt before adding NO. ... 

High-temperature oxidations with nitrogen dioxide or nitrogen dioxide and chlorine followed by treatment with water convert perfluoroalkyl hydrides and perfluoroalkyl iodides into perfluorocarboxylic acids. Perfluoroalkyl bromides and especially perfluoroalkyl chlorides do not react appreciably (equation 201) [455]. 

Solid copper(ll) sulfide reacts with aqueous nitric acid to produce aqueous copper(ll) sulfate, liquid water, and nitrogen dioxide gas. 

These statues, Saints and Sinners by sculptor Marshall Fredericks at Oakland University, Rochester, Michigan, were exposed to acid rain. The reaction of water with sulfur dioxide and nitrogen oxides forms acidic compounds, speeding the statues decay. 

The benzene is initially converted to phenylmercuric nitrate which reacts with nitrogen dioxide to yield nitrosobenzene Each of these intermediates has been isolated from the reaction mixture. The nitrosobenzene can react in two wajrs. In nitric acid weaker than 50 per cent, it reacts with 2 moles of nitric oxide to form phenyldiazonium nitrate, a reaction first discovered by Bamberger. The diazonium salt is converted by water to phenol, which is nitrated in steps to the final products. In nitric acid of greater than 50 per cent concentration, the nitrosobenzene is converted directly to p-nitro-phenol without going through the diazonium compound. The p-nitro-phenol is then nitrated further to give the dinitrophenol and picric acid. 

The photolysis of nitrate and nitrite in sea water produces nitrogen dioxide (NO2) and nitric oxide (NO), respectively (eqns [I] and [II]). Previous work indicated that the photolysis of nitrite could act as a small net source of NO to the marine atmosphere under some conditions. However, this conclusion seems to be at odds with estimates of the steady-state concentrations of superoxide and the now known rate constant for the reaction of superoxide with nitric oxide (6.7 x 10 M s ) to form peroxyni-trite in aqueous phases (eqn [V]). 

It is recommended that the chlorine dioxide be blown out of the water with nitrogen, if it is necessary to separate CIO2 from chlorite and other disturbing substances contained in the water, or if very low... 

Poschl, U., Letzel, T., Schauer, C., Niessner, R. Interaction of ozone and water vapor with spark discharge soot aerosol particles coated with benzo[a]pyrene O3 and H2O adsorption, benzofm] pyrene degradation, and atmospheric implications. J. Phys. Chem. A 105, 4029-4041 (2001) Prince, A.P., Wade, J.L., Grassian, V.H., Kleiber, K.D., Young, M.A. Heterogeneous reactions of soot aerosols with nitrogen dioxide and nitric acid atmospheric chamber and Knudsen cell smdies. Atmos. Environ. 36, 5729-5740 (2002)... 

Synonyms Cellulose, oxidized Cellulosic acid Oxycellulose Definition Cellulose produced by treatment with nitrogen dioxide Properties SI. of-wh. gauze, lint, or powd. si. charred odor acid taste sol. in aq. org. bases, dll. alkali, ammonium hydroxide insol. in water, acids, common org. sol vs. 

Like all nitrates, it is soluble in water on heating it decomposes evolving nitrogen dioxide and oxygen, but leaving the metal, and not, as is usual with other nitrates, the oxide ... 

In the examples, a nitro group is substituted for a hydrogen atom, and water is a by-product. Nitro groups may, however, be substituted for other atoms or groups of atoms. In Victor Meyer reactions which use silver nitrite, the nitro group replaces a hahde atom, eg, I or Br. In a modification of this method, sodium nitrite dissolved in dimethyl formamide or other suitable solvent is used instead of silver nitrite (1). Nitro compounds can also be produced by addition reactions, eg, the reaction of nitric acid or nitrogen dioxide with unsaturated compounds such as olefins or acetylenes. 

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