Open AccessTrends in the use of bentonite clays
Author(s) -
А. С. Панасюгин,
Л. П. Долгий,
И. Л. Кулинич,
А. А. Герасикова,
А. В. Микишко,
Н. П. Машерова,
А. Р. Цыганов
Publication year - 2020
Publication title -
litʹë i metallurgiâ
Language(s) - English
Resource type - Journals
eISSN - 2414-0406
pISSN - 1683-6065
DOI - 10.21122/1683-6065-2020-4-78-89
Subject(s) - bentonite , montmorillonite , sorption , adsorption , thermogravimetry , heteronuclear molecule , chemistry , thermal stability , catalysis , toluene , chemical engineering , thermogravimetric analysis , inorganic chemistry , organic chemistry , molecule , engineering
Thepapergivesa general description of the areas of application of bentonite clays. A number of deposits were evaluated in terms of their use in various technological processes. Analysis of directions of application of bentonite clays in foundry was carried out. Using the methods of X-ray and gas chromatographic analysis, scanning electron microscopy, thermogravimetry and direct adsorption-structural measurements, it is shown that materials obtained from montmorillonite and heteronuclear hydroxo complexes Cr-Cu have greater thermal stability and better sorption characteristics compared to montmorillonite fixed by mononuclear hydroxo complexes Using montmorillonite modified with heteronuclear hydroxo complexes Cr-Cu with the best adsorption-structural parameters and zeolite NCVM, a laboratory batch of mixed adsorbent catalysts has been developed. Thismaterialhasbeenstudiedin deep vapor oxidation processes of low concentrated organic substances such as acetone, toluene, ethyl acetate, ethanol, butanol and butyl acetate. Theconversion rate on the mixed adsorbent catalysts for the studied adsorbates was found to be 94.9–97.7 (average 96.2 %).