Sol-Gel Synthesis and Characterization of the Cu-Mg-O System for Chemical Looping Application

Timofey M. Karnaukhov, Grigory B. Veselov, Svetlana V. Cherepanova, Aleksey A. Vedyagin

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

A sol-gel technique was applied to prepare the two-component oxide system Cu-Mg-O, where MgO plays the role of oxide matrix, and CuO is an active chemical looping component. The prepared samples were characterized by scanning electron microscopy, low-temperature nitrogen adsorption, and X-ray diffraction analysis. The reduction behavior of the Cu-Mg-O system was examined in nine consecutive reduction/oxidation cycles. The presence of the MgO matrix was shown to affect the ability of CuO towards reduction and re-oxidation significantly. During the first reduction/oxidation cycle, the main characteristics of the oxide system (particle size, crystallization degree, etc.) undergo noticeable changes. Starting from the third cycle, the system exhibits a stable operation, providing the uptake of similar hydrogen amounts within the same temperature range. Based on the obtained results, the two-component Cu-Mg-O system can be considered as a prospective chemical looping agent.

Язык оригиналаанглийский
Номер статьи2021
ЖурналMaterials
Том15
Номер выпуска6
DOI
СостояниеОпубликовано - 1 мар. 2022

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
  • 2.05 ТЕХНОЛОГИЯ МАТЕРИАЛОВ
  • 2.05.PZ МЕТАЛЛУРГИЯ И МЕТАЛЛУРГИЧЕСКАЯ ИНЖЕНЕРИЯ

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