The Stability of Sulfide Sorbents Based on Silica in Aqueous Media. Part ii. MCM-41 Matrix

Тип публикации: статья из журнала

Год издания: 2018

Идентификатор DOI: 10.17516/1998-2836-0056

Ключевые слова: mesoporous mesostructured silica, MCM-41, grafting, stability, treatment, sorption, palladium

Аннотация: Sulfide sorbents based on MCM-41 have been synthesized. The chemical and thermal stability of the sorbents obtained has been investigated by physicochemical methods. It has been found that the acid treatment of the samples at the boiling point results in insignificant changes in structural, textural and sorption characteristics, demonstrating the total losses of the sorbent up to 15 wt%, which is considered to be connected with the dissolution of the malformed and unstructured particles of a silica matrix. The neutral and alkaline treatment induces more significant changes associated with the starting matrix dissolution (the weight loss is about 25-30 wt%). Nevertheless, the grafted organic functional layer is retained. The sorbents obtained are quite stable in the studied aggressive conditions and able to work over a long period of time in a variety of technological solutions and are not inferior to the well-known commercial sorbents with functional groups.

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Издание

Журнал: JOURNAL OF SIBERIAN FEDERAL UNIVERSITY-CHEMISTRY

Выпуск журнала: Vol. 11, Is. 1

Номера страниц: 31-41

ISSN журнала: 19982836

Место издания: KRASNOYARSK

Издатель: SIBERIAN FEDERAL UNIV

Авторы

  • Kozlova Svetlana A. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Zaitseva Yulia N. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Parfenov Vladimir A. (FRC Krasnoyarsk Sci Ctr SB RAS, Inst Chem & Chem Technol SB RAS, 50-24 Akademgorodok, Krasnoyarsk 660036, Russia)
  • Samoilo Aleksandr S. (Siberian Fed Univ, 79 Svobodny, Krasnoyarsk 660041, Russia)

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