Features of the structure active centers of industrial catalysts for the oxidative chlorination of ethylene

  • Authors

    • Sergiy Kurta
    • Ihor Mykytyn
    • Victoria Ribun
    • Olga Khatsevich
    2018-04-20
    https://doi.org/10.14419/ijet.v7i2.23.12751
  • Catalyst, Oxidative Chlorinating, Reaction, Ethylene, Mechanism, Cucl2, Fluorescence Spectroscopy, Γ-Al2O3, X-Ray, Microscopy.

  • The active phase of CuCl2, HСuСl2, H2СuСl4 and two grades of industrial ethylene oxidation chlorination catalysts (EOC) such as deposited catalyst X1 (Harshow), with copper chlorides supported on an alumina surface, and a permeated MEDC-B catalyst immobilized in the internal pores of the firm of the company Sud-Chemie. Catalyst were analyzed by the method of thermoemission electronic raster (VEGA3NTSCAN) microscopy and X-ray fluorescence energy dispersion spectroscopy (EDX-7000). It is shown that the active catalyst centers of CuCl2 have different crystalline structure from the amorphous active phase of H2CuCl2, H2CuCl4 on the surface of the catalysts. On the surface of X1 Harshow copper chlorides are uniformly distributed throughout the volume of the carrier catalyst γ-Al2O3 in the form of amorphous portions [CuCl4]-2, [CuCl2]-1. At the same time, on the surface of the catalyst MEDC-B, the active centers have a separate cluster immobilized crystalline structure of the active phase, which differs from the composition of the carrier γ-Al2O3.

     

     

  • References

    1. [1] Moscow–Kalush. Technological Standards at Plant of Vinyl Chloride Production; 2006.

      [2] Flid M.R, Treger YA: Vinyl Chloride: Chemistry and Technology. First edition. Moscow, Russia: “Kalvisâ€; 2008. P.214–372.

      [3] Kurta S.A. Improvement of technological processes of vinyl chloride production: Dissertation submitted to fulfill the requirement for the degree of Doctor of Science with specialization of 05.17.04 – technology of products of organic synthesis. National University “Lviv Polytechnicsâ€, Lviv; 2015.

      [4] Flid M.R, Kurlyandskaya II, Dmitriev YuK, Babotina MV. Oxidation reaction in the ethylene oxidative chlorination process. In Principles and Methods for Accelerated Catalyst Design and Testing. Netherlands: Kluwer Academic Publishers; 2002.

      [5] Flid M.R. Resources-economy, balance by chlorine technology to obtain of the vinyl chloride from primary goods ethane-ethylene: Doctoral Dissertation in Technical Sciences: Research institute “Synthesisâ€; Moscow; 2002.

      [6] Kurta S.A., Mykytyn I.M, Tatarchuk T.R. Structure and the catalysis mechanism of oxidative chlorination in nanostructural layers of a surface of alumina. Nanoscale esearch Letters. 2014; 9:1.

      [7] Garilli M, Carmello D, Cremaschi B, Leofanti G, Padovan M, Zecchina A, et al. Copper species in CuCl2/γ-Al2O3 catalyst for ethylene oxychiorination Studies in Surface Science and Catalysis. 2000; 130. p. 1817-1822.

      [8] Leofanti G, Padovan M, Garilli M, Carmello D, Marra GL, Zecchina A, et al. Alumina-Supported Copper Chloride. Effect of Aging and Thermal Treatments Journal of Catalysis. 2000; 189:1. p. 105-116.

      [9] Leofanti G, Padovan M, Garilli M, Carmello D, Zecchina A, Spoto G, et al. Alumina-Supported Copper Chloride: 1. Characterization of Freshly Prepared Catalyst. Journal of Catalysis. 2000; 189:1. p. 91-104.

      [10] Kurta SA, Tatarchuk TR, Mykytyn IM. Crystal-oxide-chemical mechanism of catalysis of oxidative chlorination of ethylene. The Ukrainian Chemical Journal. ISSN 0041-6045, View. IZNKh NAS of Ukraine Kiev.2013; 79:6. p. 101-106.

      [11] Kurta SA, Mykytyn IM, Khaber MV. Influence of regeneration conditions on the activity of the catalyst for oxidative chlorination of ethylene. Russian Journal of Applied Chemistry. Russia. 2005; 76:7. p.1110-1113

      [12] Gianolio D, Lamberti C, Muddada NB, Olsbye U. Doped-CuCl2/Al2O3 catalysts for ethylene oxychlorination: Influence of additives on the nature of active phase and reducibility. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 2012; 284:1. p. 53-57.

      [13] Rout KR, Baidoo MF, Fenes E, Zhu J, Chen D, Fuglerud T. Understanding of potassium promoter effects on oxychlorination of ethylene by operando spatial-time resolved UV–vis–NIR spectrometry. Journal of Catalysis. 2017; 352. p. 218-228.

      [14] Rouco AJ. Low-Temperature Ethylene Oxyhydrochlorination: Effects of Supports and Promoters on the Mobilities of Active Species in CuCl2 Catalysts. Journal of Catalysis. 1995; 157:2. p. 380-387.

      [15] Kurta SA, Mykytyn IM, Kurta OS. The structure of the active centers on the catalyst surface CuCl2/γ-Al2O3. Phys Chem Solids State. 2008; 9:577. p. 582.

      [16] Kurta SA. Catalysis of ethylene oxyclorination into 1, 2-diclorethane in the presence of CuCl2/CuCl active centres on the surface of γ-Al2O3. CHEMISTRY & CHEMICAL TECHNOLOGY/ISSN: 1996–4196. Lviv Polytechnic 2012, 1:1–8.

      [17] Kurta, SA. Investigating active centers ofindustrial catalysts for the oxidative chlorination of ethylene on a γ-Al2O3 surface. Catalysis in Industry. Ed. "Kalvis" Moscow, Russia. 2011; 2. p. 15-21.

      [18] Lamberti C, Prestipino C and co-author. The CuCl2/Al2O3 catalyst investigated in interaction with reagent. Int.J.Mol.Sci.2001; 2. p. 230-245.

      [19] Thakurdesai PA, Kole PL & Pareek RP (2004), Evaluation of the quality and contents of diabetes mellitus patient education on Internet. Patient Education and Counseling 53, 309–313.

  • Downloads

  • How to Cite

    Kurta, S., Mykytyn, I., Ribun, V., & Khatsevich, O. (2018). Features of the structure active centers of industrial catalysts for the oxidative chlorination of ethylene. International Journal of Engineering & Technology, 7(2.23), 307-316. https://doi.org/10.14419/ijet.v7i2.23.12751