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  Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

Estonian Journal of Earth Sciences

ISSN 1736-7557 (electronic)  ISSN 1736-4728 (print)
An international scientific journal

Formerly: Proceedings of the Estonian Academy of Sciences, Geology
Published since 1952

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Vol. 16, Issue 1
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О ПРОДУКТАХ ГИДРОЛИЗА КЕРОГЕНА КУКЕРСИТА. Сообщение второе; pp. 5–7

(Full article in PDF format) https://doi.org/10.3176/toim_k_g.1967.01.1


Authors

А. ФОМИНА, Л. НАППА

Abstract

ON PRODUCTS PREPARED BY HYDROLYSIS OF OIL SHALE (KUKERSITE). II

The results of a study of carbohydrate structural units of the kerogen of oil shale (kukersite) are diseussed.

Two series of hydrolysis were carried out (stage hydrolysis with a duration of 2 hours per stage, with 5 per cent hydrochloric aeid on a boiling water-bath).

In the first series an eleven-stage hydrolysis was carried out, in the seeond, we had a twenty-six-stage hydrolysis at normal pressure and after that a three-hour hydrolysis inan autoclave.

The hydrolysates were purified and separated on an ion exchange column filled with cation exchange resin KU-2.

Two fraetions were collected. Carbohydrates were eluted with water and aminer aeids with 2n NH4 OH.

After the paper chromatographic separation of carbohydrates, the chromatograms were evaluated quantitatively on a Lange photometer (Table 2).

The dominant carbohydrates were galactose and arabinose, while rhamnose oeeurred only intraees.

The identified carbohydrates are characteristic of water flora. Galactose and arabinose are main structural units of araban and galactan, the main constituents of peetin.

17 amino aeids were identified in the hydrolysates on an automatic amino aeid analyser.

The results could serve as a basis for a further detailedinvestigation.



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Current Issue: Vol. 68, Issue 3, 2019




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No. 1: 20 March
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