Утилизация отходов производства капролактама для получения поверхностно-активных веществ

Ravshan R.  Makhkamov; Arzigul E.  Kurbanbaeva; Faizullo R.  Saidkulov; Makhira L.  Nurmanova; Shukhrat K.  Samandarov; Khosiyat R.  Saidakhmedova; Dilorom A.  Kholmuminova

doi:10.25514/CHS.2021.2.20007

Ravshan R. Makhkamov Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0002-5834-3917
Arzigul E. Kurbanbaeva Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0001-8539-419X
Faizullo R. Saidkulov Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0002-0548-0395
Makhira L. Nurmanova Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0001-5768-7737
Shukhrat K. Samandarov Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0002-6008-8409
Khosiyat R. Saidakhmedova Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0002-8960-493X
Dilorom A. Kholmuminova Institute of General and Inorganic Chemistry of the Academy of Sciences of Uzbekistan, Tashkent, Uzbekistan https://orcid.org/0000-0001-6462-6633

DOI: https://doi.org/10.25514/CHS.2021.2.20007

Keywords: Waste disposal, surfactant production, surface activity, foam-forming ability

Abstract

New surfactants were obtained based on the utilization of caprolactam production waste. To obtain surfactants, the cubic residues of benzoic acid were sulfonated with concentrated sulfuric acid in the presence of an Al₂(SO₄)₃ catalyst and the reaction product was etherified with higher monatomic alcohols. The surface activity and foaming ability of the obtained new surfactants in aqueous solutions were studied. It has been shown that with an increase in the length of the aliphatic hydrocarbon radical, the surface activity of surfactants of benzoic acid derivatives increases. It has been established that there is a good correlation between the foaming ability and the surface activity of the studied surfactants. It has been shown that the stability of foams is significantly determined by the interaction of surfactant molecules and additives in the monolayer.

Keywords: Waste disposal, surfactant production, surface activity, foam-forming ability.

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Disposal of caprolactam production waste for synthesis of surface-active substances

Abstract

References

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