Satbayev University, Almaty, Republic of Kazakhstan:

G. A. Ussoltseva, Assistant Professor, Candidate of Technical Sciences, e-mail: nota-vesna@yandex.kz
A. O. Baikonurova, Professor, Doctor of Technical Sciences, e-mail: a.baikonurova@yandex.kz
M. S. Markametova, Leading Researcher, Doctor PhD

D. V. Sokolsky Institute of Fuel, Catalysis and Electrochemistry, Almaty, Republic of Kazakhstan:

S. B. Nurzhanova, Leading Researcher, Candidate of Chemical Sciences

This paper looks at ways to produce a nanocomposite catalyst by activation of aluminosilicates (zeolites) with vanadium xerogel. It also examines the properties of such catalyst. Vanadium xerogel can be used to activate zeolites due to its structural and chemical features. Xerogel has a lamellar structure and consists of vanadium pentoxide layers bonded together by water molecules, which is confirmed by the results of infrared spectroscopy and X-ray phase analysis. Aluminosilicate zeolite catalysts of the grades IK-17, KN-30 and KN-4 were used as stabilization matrices for vanadium xerogel nanoparticles. The bidispersed structure of the above catalysts is comprised of protonic zeolite-based elementoaluminosilicates ZSM–5 with an inert γ-Al₂O₃ carrier. The paper describes certain structural and catalytic properties of the above zeolites. A typical characteristic of zeolitic catalysts includes the ability to change the interplanar spacing depending on the cation size (vanadium in this case), which is also their most essential feature. The catalytic properties of zeolites can be characterized as multifunctional, which is confirmed by a variety of catalytic processes that can develop on them. The study that looked at the activity of the generated catalysts showed that nanocatalysts can be produced by changing the zeolite composition and the ratio between nanocompounds of vanadium and the zeolite carrier. The activity of such nanocatalysts during catalytic oxidation of methane rises and exceeds the one of commercial vanadium catalysts. The paper describes a technique to activate zeolitic catalysts by impregnating nanoparticles of vanadium xerogel into their matrix. This is a simple technique, and the resultant activated catalyst can potentially be used in organic catalysis.
This research study was funded under the Grant АР05134196 by the Ministry of Education and Science of the Republic of Kazakhstan.

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