Please use this identifier to cite or link to this item: http://elib.belstu.by/handle/123456789/20882
Title: Preparation of pine flotation oil by hydration with α-pinene
Authors: Shpak, S. I.
Chernysheva, T. V.
Fleisher, V. L.
Kvesko, A. A.
Keywords: терпеновые спирты
терпинеолы
гидратация скипидара
органические кислоты
муравьиная кислота
пинен
Issue Date: 2016
Publisher: BSTU
Citation: Preparation of pine flotation oil by hydration with α-pinene / S. I. Shpak [et al.] // Proceedings of BSTU. No. 4. – Minsk : BSTU, 2016. – P. 100-103
Description: The hydration of α-pinene of gum turpentine and separately pinene fractions in the organic acids media for the purpose of obtaining terpene alcohols, which are widely used as flotation reagent for mineral processing in mining production were studied. The best results are obtained among the organic acids when 70% formic acid is used. The α-pinene hydration process in the acid imedium is exothermic, and it is necessary to maintain a constant temperature of 65 °C to reduce the rate of side reactions. The main component of turpentine, resulting in the formation of α-terpineol is α-pinene; 3-carene, terpinolene, and limonene contents do not practically change in the reaction mixture, which testify their stability in 70% formic acid media. The maximum content of terpene alcohols (60,1%) was obtained when using α-pinene fraction at a ratio of α-pinene and 70% formic acid 1.0 : 1.1 for 3 hours. Increase of the duration of hydration reaction leads to the decrease in the content of terpineol in the reactio n mixture due to the secondary isomerization processes.
URI: http://elib.belstu.by/handle/123456789/20882
Appears in Collections:2016, № 4

Files in This Item:
File Description SizeFormat 
Shpak.Preparation.pdf566.03 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.