LAWS OF FORMATION OF ACTIVE AND SELECTIVE CATALYTIC SYSTEMS ON THE BASIS OF CLINOPTILOLITE FOR HEAVY HYDROCARBONS CRACKING PROCESS

Authors

  • K. A. Kadirbekov A.B. Bekturov Institute of chemical sciences
  • D. K. Zhambakin A.B. Bekturov Institute of chemical sciences
  • A. K. Kadirbekov A.B. Bekturov Institute of chemical sciences
  • K. I. Imanbekov LLP «Kazatomprom-Sorbent»
  • A. U. Aitureev LLP «Kazatomprom-Sorbent»

Keywords:

clinoptilolit, modification, texture, morphology, acidity, cracking catalytic systems

Abstract

Using the modern physical methods (XPS, SEM, TEM, BET) regularities in the formation of catalytic systems based on clinoptilolite by the modification of various by nature acids were revealed. It is shown that as a result of interaction of the modifier with an active surface new structure is created, which lead to a significant increase in specific surface area and catalytic activity. A detailed study of the zeolite surface with TEM HR showed the formation of stable structures of clusters, which are partially embedded in the volume of the zeolite. The sizes of these clusters are 1-2 nm and are available for the reactants. It is believed that as a result of impregnating and calcining the catalytic systems, translation of heteropolyacid particles into highly dispersed state is achieved, where the heteropolyacid particles perform specific adsorption and catalytic properties.

References

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[2] Xiao F.S., Meng X., Zeolites in Sustainable Chemistry Synthesis, Characterisation, Catalytic Applications, Springer 2016.
[3] Kadirbekov K.A., Zhambakin D.K., Nurbaeva R.K., Aitureev A.U., Kadirbekov A.K., Imanbekov K.I., Design of active and selective catalyst systems on the basis of clinoptilolite for hydrocarbon cracking, [in] Abstracts of EuropaCat 2015 XII European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” Каzаn, Russia, 2015. P. 557-558.
[4] Konuspayev S.R., Kadirbekov K.A., Salanov A.N., Nurbayeva R.K., Sarsekova A.T., Nurlybayev I.T., The synthesis of nanocatalysts of oil treatment from natural zeolites, [in] 14th ICC Pre-conference School Nanocatalysis Fundamental & Aplications, Dalian, China, 2008. P. 190.
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Published

2021-05-03