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Eurasian Chemico-Technological Journal

ISSN
1562-3920
2522-4867
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Catalysis and Oxidati...

Catalysts for Methane...

Adsorption and biosor...

Catalytic Processes i...

Petroleum Processing ...

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20201

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    Тип записи:Публикация,
    Acid Modification of Diatomite-Based Sorbents
    (2020-09-30)
    Araylim Nurgain
    ;
    Meruyert Nazhipkyzy
    ;
    Aizhan A. Zhaparova
    ;
    Almagul Issanbekova
    ;
    Michela Alfè
    In this work, the effect of acid pre-treatment (hydrochloric acid, HCl) and calcination of diatomite, a silicon dioxide-material from natural sources, was studied with the aim to obtain diatomite-based sorbents with specific physicochemical properties. For this, acid pre-treatments with HCl at different calcination conditions, namely HCl concentration (0.5, 1 M) and calcination temperatures (from 600 to 900 °C) were studied. Morphological features different from those of natural diatomite were obtained. It has been found that treatment of diatomite with 0.5 M HCl at 800 °C showed a specific pore volume of 0.008 cm3/g, and a specific surface area of 19.26 m2/g, while the treatment of diatomite with 1.0 M HCl showed a specific pore volume of 0.011cm3/g, and a specific surface area of 25.57 m2/g. The performance of the acid pretreatment of diatomite for adsorption of Pb ions from water was also studied.
    Цитирования (OpenAlex) 8Цитирования (OpenCitations) 6