Abstract: The most common method for the synthesis of copper-containing supported catalysts is impregnation of the support with a copper salt solution. However, calcination and reduction of the resulting materials can lead to agglomeration of copper species and a decrease in catalytic activity. The synthesis of highly dispersed copper particles on the support surface can be performed using ammonia evaporation method with a copper ammine complex as a precursor. This review considers the effect of copper loading and the support nature on the structure of the obtained catalysts with a focus on the benefits of the ammonia evaporation method for preparation of the Cu/SiO2 catalysts compared to other methods. This review summarizes the results concerning influence of the synthesis conditions of the ammonia evaporation method on the morphology and structure of Cu-based catalysts. The effect of ammonia evaporation temperature and solution pH on copper dispersion, copper particle size, and reducibility of the Cu-based catalysts is also included. The morphology of the silica support and the particle size of the silica sol have impact on the formation of copper phyllosilicate in the Cu/SiO2 catalysts.

Cite: Bukhtiyarova M.V. , Bukhtiyarova G.A.
Highly Dispersed Cu Nanoparticles Prepared UsingAmmonia Evaporation Method
ChemNanoMat. 2025. e202500415 :1-18. DOI: 10.1002/cnma.202500415 WOS

Dates:

Submitted:	Jul 24, 2025
Accepted:	Nov 18, 2025
Published online:	Dec 4, 2025

Identifiers:

Web of science:

WOS:001630041300001

Citing: Пока нет цитирований

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