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Metal salts with highly electronegative cations as efficient catalysts for the liquid-phase nitration of benzene by NO2 to nitrobenzene
Received date: 21 Oct 2016
Accepted date: 10 Jan 2017
Published date: 12 May 2017
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Metal salts with highly electronegative cations have been used to effectively catalyze the liquid-phase nitration of benzene by NO2 to nitrobenzene under solvent-free conditions. Several salts including FeCl3, ZrCl4, AlCl3, CuCl2, NiCl2, ZnCl2, MnCl2, Fe(NO3)3·9H2O, Bi(NO3)3·5H2O, Zr(NO3)4·5H2O, Cu(NO3)2·6H2O, Ni(NO3)2·6H2O, Zn(NO3)2·6H2O, Fe2(SO4)3, and CuSO4 were examined and anhydrous FeCl3 exhibited the best catalytic performance under the optimal reaction conditions. The benzene conversion and selectivity to nitrobenzene were both over 99%. In addition, it was determined that the metal counterion and the presence of water hydrates in the salt affects the catalytic activity. This method is simple and efficient and may have potential industrial application prospects.
Key words： metal salts; electronegativity; nitrobenzene; NO2; catalytic nitration
Shenghui Zhou , Kuiyi You , Zhengming Yi , Pingle Liu , Hean Luo . Metal salts with highly electronegative cations as efficient catalysts for the liquid-phase nitration of benzene by NO2 to nitrobenzene[J]. Frontiers of Chemical Science and Engineering, 2017 , 11(2) : 205 -210 . DOI: 10.1007/s11705-017-1625-3
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