Error message

  • Deprecated function: Unparenthesized `a ? b : c ? d : e` is deprecated. Use either `(a ? b : c) ? d : e` or `a ? b : (c ? d : e)` in include_once() (line 1439 of /home/science2016/public_html/includes/bootstrap.inc).
  • Deprecated function: Array and string offset access syntax with curly braces is deprecated in include_once() (line 3557 of /home/science2016/public_html/includes/bootstrap.inc).

Quantum-Chemical Calculation of Modified Silicon-Contained Zeolite Clusters Electronic Structure by Zinc and Calcium Ions

Vasyl Pokhmurskii, Sergiy Korniy, Volodymyr Kopylets and Bogdan Kosarevych
Affiliation: 
Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine 5, Naukova str., 79060 Lviv, Ukraine; kornii@ipm.lviv.ua
DOI: 
https://doi.org/10.23939/chcht08.01.005
AttachmentSize
PDF icon full_text.pdf169.62 KB

Keywords:

Abstract: 
Geometrical and electronic structure of clinoptilolite clusters modified by zinc and calcium cations were calculated by semiempirical quantum-chemical method PM6. The value of formation heat, potentials of ionization, EHOMO and ELUMO energies, cations and oxygen atoms charges, and also binding energy of cations with the cluster were obtained. The redistribution of electronic density on the oxygen atoms of clusters during formation of bonds with zinc and calcium cations was analyzed. The ability of modified clinoptilolite clusters to sorb the hydrogen ions has been estimated. It has been established that clinoptilolite clusters modified by calcium cations can inhibit corrosive processes on the metals surface.
References: 

[1] Auerbach S., Carrado K. and Dutta P.: Handbook of Zeolite Science and Technology. Marcel Dekker Inc., New York 2003.

[2] Rabo J.: Khimiya Zeolitov i Kataliz na Zeolitakh. Mir, Moskwa 1980.

[3] Chelishchev N., Volodin V. and Kryukov V.: Ionoobmennyje Swojstva Prirodnych Vysokokremnistych Zeolitov. Nauka, Мoskwa 1988.

[4] Langella A., Pansini M., Cappelletti P. et al.: Micropor. Mesopor. Mater, 2000, 37, 337.

[5] Vasylechko V., Cryshchouk G., Kuz'ma Y. et al.: Micropor. Mesopor. Mater, 2003, 60, 183.

[6] Vasylechko V., Grischuk, G. and Suhnatskyy M.: Visnyk Lviv.Univ., Ser.Khim., 2011, 52, 148.

[7] Chico B., Simancas J., Vega, J.M. et al.: Progr. in Org. Coat., 2008, 61, 283.

[8] Deflorian F., Fredrizzi L. and Bonora P.: Advances in Corrosion Protection by Organic Coatings III: Proceed. of the Electrochem. Society, 1997, 41-97, 45.

[9] Ahmed N., Emira H. and Selim M.: Pigment and Resin Techn., 2011, 40, 91.

[10] Sen K. and Mingos D. (Eds.): Chemical Hardess. Structure and Bonding. Springer, Berlin 1993.

[11] Astala R., Scott M. and Monson P.: J. Phys. Chem. B., 2004, 108, 9208.

[12] Firsov D., Tolmachev A. and Kryuchenkova N.: Vestnik. Моskowsk. Univ., Ser. 2. Khim., 2010, 1, 38.

[13] Kubasov A., Kitaev L., Malyshev S. and Novakovskaya Y.: Vestnik. Моskowsk. Univ., Ser. 2. Khim., 2010, 5, 339.

[14] Korkuna O., Leboda R., Skubiszewska-Zieba J., Vrublevska T. et al.: Micropor. and Mesopor. Mat., 2006, 87, 243.

[15] Breck D.: Zeolitnyje Molekularnyje Syta. Mir, Moskwa 1976.

[16] http://www.iza-structure.org/databases/.

[17] Stewart J.: J. Mol. Model., 2007, 13, 1173.

[18] Stewart J.: J. Comput. (Aided Mol. Des), 1990, 1, 1.