FORMATION OF ANILINE MONOSULPHONIC ACID
DOI:
https://doi.org/10.58916/jhas.vi.413الكلمات المفتاحية:
aniline, monosulfate, spectrophotometric, activation energiesالملخص
The study of aniline sulfonation is important for the subsequent synthesis of polyaniline with substituents in the side chain. Sulfonation of purified aniline monosulfate with monohydrate and oleums was used. Quantitative analysis of aminosulfonic acid isomers was carried out using spectrophotometric and bromometric methods. An increase in the SO3 concentration in the sulfonating oleum leads to an increase in the amount of methanilic acid compared to the ortho- and para-isomers. The process of increasing the concentration of the meta-isomer is a linear function of the acidity of the oleum. The addition of tetrabisulfate boric acid to the oleum also helps to increase the yield of methanilic acid. A comparison of activation energies showed that tetrabisulfate boric acid had no effect on the sulfonation mechanism and the transition state. The work presents new data on the mechanisms of aniline sulfonation.
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المراجع
Ratheesh, R., & Viswanathan, K. (2014). Chemical polymerization of aniline using para-toluene sulphonic acid. IOSR J. Appl. Phy, 6(1), 1-9
Xu, Y., Dai, L., Chen, J., Gal, J. Y., & Wu, H. (2007). Synthesis and characterization of aniline and aniline-o-sulfonic acid copolymers. European polymer journal, 43(5), 2072-2079
Heywood, A., Mathias, A., & Williams, A. E. (1970). Identification of sulfonic acids and sulfonates by mass spectrometry. Analytical Chemistry, 42 (11), 1272-1273
Lisk, G. F. (1950). Sulfonation. Industrial & Engineering Chemistry, 42 (9), 1746-1760
Kanetani, F., & Yamaguchi, H. (1978). Studies of Reactions of Amines with Sulfur Trioxide. V. Transsulfonation of Amine Salts of Some N-Substituted Amidosulfuric Acids. Bulletin of the Chemical Society of Japan, 51 (10), 3039-3046
Gillespie, R. J., Peel, T. E., & Robinson, E. A. (1971). Hammett acidity function for some super acid systems. I. Systems H2SO4-SO3, H2SO4-HSO3F, H2SO4-HSO3Cl, and H2SO4-HB (HSO4) 4. Journal of the American Chemical Society, 93 (20), 5083-5087
Maarsen, P. K., & Cerfontain, H. (1977). Aromatic sulphonation. Part 59. Sulphonation of aniline in concentrated aqueous and fuming sulfuric acid. Journal of the Chemical Society, Perkin Transactions 2, (8), 1008-1010
Elliot R. Alexander. Mechanism of the Sulfonation of Aromatic Amines. I. Sulfonation with Fuming Sulfuric Acid. Journal of the American Chemical Society 1946, 68, 6, 969-973
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