ISSN 09655441, Petroleum Chemistry, 2016, Vol. 56, No. 3, pp. 197–204. © Pleiades Publishing, Ltd., 2016. Original Russian Text © E.V. Parkhomchuk, K.A. Sashkina, V.N. Parmon, 2016, published in Neftekhimiya, 2016, Vol. 56, No. 3, pp. 214–221. 197 The developed micropore system of the majority of zeolites imposes significant diffusion limitations on the rate of zeolitecatalyzed reactions involving mac romolecular organic reagents [1]. For more effective use of the active surface of a zeolite catalyst, an addi tional system of larger pores of a given size, the so called hierarchical micro–meso–macropore system, is created in the material [2]. According to the results of studies carried out in the last 10–15 years, hierar chical zeolites are considerably more active than con ventional microporous catalysts in petrochemical alkylation, isomerization, and esterification reaction [2–4] or in the reactions of complete oxidation of organic compounds [5]. There is a great variety of methods known to date for creating hierarchical pore structure of zeolites, which can be roughly divided to two different routes, the topdown and bottomup synthetic approaches [6, 7]. The former, topdown approach consists in treat ment of an already crystallized zeolite by various means, for example, with steam, acid, or alkali, and in partial amorphization of the zeolite crystal framework [8]. These types of treatment result in a material with irregular porosity and a wide size distribution of meso pores. There are also methods for creating a hierarchi cal structure using the topdown approach that make it possible to control more accurately the textural characteristics of the material. These are, for example, methods of structural modification of layered zeolites, which include separation of zeolites into layers with subsequent random layer packing, “delamination”, or insertion of inorganic particles in interlayers, “pillar ing” [9]. The second, “bottomup” approach suggests modifying the conditions of hydrothermal (HT) crys tallization of zeolite. Thus, by radically changing HT synthesis parameters (temperature, time, and surfac tant concentration in gel), it is possible to prepare zeo lite nanocrystals and make on their basis one or another material with desired textural characteristics [10]. Introduction of supramolecular templates, for example, polystyrene (PS) microspheres, during hydrothermal crystallization of zeolites also leads to the formation of an additional system of transport pores in the material after the removal of organic com ponents [11]. Ironcontaining zeolites exhibit high activity in reactions of complete oxidation of organic com pounds. However, the first attempts to obtain hierar chical Fecontaining zeolites using polystyrene microspheres resulted in composite zeolite materials containing a large proportion of the amorphous phase [12]. Despite the fact that such materials have shown high effectiveness in reactions of complete catalytic oxidation of large organic molecules with hydrogen peroxide, the presence of the amorphous phase makes New Heterogeneous Catalysts Based on Zeolites with Hierarchical Pore System E. V. Parkhomchuk a–c , K. A. Sashkina a–c , and V. N. Parmon a, b a Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia b Novosibirsk State University, Novosibirsk, Russia c Research and Education Center for EnergyEfficient Catalysis, Novosibirsk State University, Novosibirsk, Russia email: ekaterina@catalysis.ru Received November 16, 2015 Abstract—The results of synthesis and packing of crystallized ironcontaining nanosized zeolites of MFI structure in dense and loose structures having different textural properties are reported. Data on the forma tion of additional meso and macropores immediately during zeolite crystallization using polystyrene micro spheres in the form of an aqueous suspension (latex) and as a dry template of closely packed particles are also presented. Advantages and disadvantages of these procedures for preparing hierarchical ironcontaining MFI structure zeolites have been compared. Values of the external surface area and the total pore volume of hier archical Fesilicalites are significantly higher than those for a reference sample. Using the polymer template to synthesize the hierarchical material consisting of zeolite nanocrystals makes it possible can significantly reduce the synthesis time and simplify the preparation procedure. Keywords: ironcontaining zeolites, synthesis, hierarchical pore system, micromesomacropores DOI: 10.1134/S0965544116030105