TY - JOUR

T1 - Extended Possibilities of Analysis for Supported Metal Catalysts and Nanocomposites by Dynamic Light Scattering

AU - Larichev, Yu V.

N1 - Funding Information: I am grateful to A.V. Ishchenko, N.A. Alekseeva, N.N. San’kova, and E.V. Parkhomchuk for their assistance in conducting the experiments and to the Center for Collective Use High Technologies and Analytics of Nanosystems, Novosibirsk State University for the provision of measuring equipment. Funding Information: This work was supported by the Ministry of Science and Higher Education of the Russian Federation and carried out within the framework of a state contract of the Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences (project no. AAAA-A21-121011390053-4). Publisher Copyright: © 2022, Pleiades Publishing, Ltd.

PY - 2022/10

Y1 - 2022/10

N2 - This study is a continuation of the work on the use of dynamic light scattering (DLS) for the analysis of active component particle sizes in supported catalysts. It was shown that the proposed STS (from solid to sol) approach is also applicable to supported catalysts based on sparingly soluble supports and nanocomposites. It was found that partial dissolution or destruction of a support with the formation of solution containing the desired nanoparticles is sufficient for effective DLS analysis. It was found that, under certain conditions, the effect of secondary aggregation of nanoparticles in solution can be observed in the course of catalyst dissolution, and this effect can prevent correct measurements. A method was proposed to avoid the secondary aggregation of particles in the course of the selective dissolution of a support. A good agreement between the results obtained by the new (DLS) method and traditional (TEM and XRD) methods was demonstrated.

AB - This study is a continuation of the work on the use of dynamic light scattering (DLS) for the analysis of active component particle sizes in supported catalysts. It was shown that the proposed STS (from solid to sol) approach is also applicable to supported catalysts based on sparingly soluble supports and nanocomposites. It was found that partial dissolution or destruction of a support with the formation of solution containing the desired nanoparticles is sufficient for effective DLS analysis. It was found that, under certain conditions, the effect of secondary aggregation of nanoparticles in solution can be observed in the course of catalyst dissolution, and this effect can prevent correct measurements. A method was proposed to avoid the secondary aggregation of particles in the course of the selective dissolution of a support. A good agreement between the results obtained by the new (DLS) method and traditional (TEM and XRD) methods was demonstrated.

KW - dynamic light scattering

KW - nanocomposites

KW - nanoparticles

KW - sols

KW - supported metal catalysts

UR - http://www.scopus.com/inward/record.url?scp=85138612245&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/eb56f206-b047-35bf-9f0a-86469d87b5c9/

U2 - 10.1134/S002315842205007X

DO - 10.1134/S002315842205007X

M3 - Article

AN - SCOPUS:85138612245

VL - 63

SP - 599

EP - 605

JO - Kinetics and Catalysis

JF - Kinetics and Catalysis

SN - 0023-1584

IS - 5

ER -