Silica powder obtained by sol-gel method as a support of organometallic vanadium catalyst for ethylene polymerization

Ł. Korach; K. Czaja; N.Yu. Kovaleva

Published : 2022-09-01

Vol. 49 No. 9 (2004)

Silica powder obtained by sol-gel method as a support of organometallic vanadium catalyst for ethylene polymerization

Ł. Korach K. Czaja N.Yu. Kovaleva

Abstract

Sol-gel technique was employed to obtain the silica-type powder, which after modification procedure was applied as a support of organometallic catalytic system for ethylene polymerization. The powder product was synthesized using hydrolysis and condensation of TEOS, catalyzed by ammonia. Obtained material and a reference support (commercial' silica Davisil) were characterized to determine their particle size distributions, BET surface area, pore volume and diameter. Gas-phase adsorption of vanadium catalyst on analyzed support materials as well as adsorption from the solution in hexane were carried out. Both carrier materials were thermally pretreated prior catalytic systems syntheses and the influence of modification method applied on resulting organometallic catalyst character was estimated in low-pressure slurry polymerization of ethylene. Obtained results prove that sol--gel material, due to its advantageous morphology with wide and shallow pores, allows to obtain catalytic systems of higher activity in low-pressure ethylene polymerization, in comparison with commercial silica Davisil.

Keywords

nośnik krzemionkowy ; metoda zol-żel ; polimeryzacja etylenu ; wanadowy katalizator nośnikowy ; porowata struktura nośnika ; katalizator wanadowy silica support ; sol-gel technique ; ethylene polymerization ; supported vanadium catalyst ; support porous structure

Details

References

Statistics

Authors

Download files

PDF

Zasady cytowania

Korach, Ł., Czaja, K., & Kovaleva, N. (2022). Silica powder obtained by sol-gel method as a support of organometallic vanadium catalyst for ethylene polymerization. Polimery, 49(9), 641–645. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1795

References

GalIi P., Cecchin G., Chadwick J. c., DeI Duca D., Vecellio G.: in "Metalorganic Catalysts for Synthesis and Polymerization" (Ed. Kaminsky W.), Springer- Verlag, Berlin 1999.

2. Czaja K, Białek M.: Macromol. Rapid. Commun. 1996, 16,253.

3. Nowakowska M., Bosowska K: Makromol. Chem. 1992,193,889.

4. Bosowska K, Nowakowska M .: J. Appl. Polym. Sci. 1998,69,1005.

S. Czaja K, Białek M.: Polimery 2002, 47,685.

6. "Metalorganic Catalysts for Synthesis and Polymerization" (Ed. Kaminsky W.), Springer-Verlag, Berlin 1999.

7. "Organometallic Catalysts and Olefin Polymerization. Catalysts for a New Millenium" (Eds. BIom R, FolIestad A., Rytter E., Tolset M., Yestans M.), Springer 2000.

8. Brinker C. J., Scherer G. W.: "Sol-gel science", Academic Press Inc., San Diego 1990.

9. Toki M., Takeuchi T., Miyasita S., Kanbe S.: J. Mat. Sci. 1992,27,2857.

10. Czaja K, Novokshonova L. A., Kovaleva N. Yu.: Macromol. Chem. Phys. 1999,200,983.

11. Iler R K: "The Chemistry of Silica", Wiley, New York 1979.

12. Czaja K: Polymer 2000,41,3937.

13. Gulceva N. M, Ushakova T. M., Krasheninnikov V. G., Meshkova L N., Dyachkovskii F. S.: Polimery 1989,34,247.

Google Scholar

Citing articles via

Statistics

Total abstract views : 0

PDF Downloads : 0

Ł. Korach korach@uni.opole.pl

Affiliation
University of Opole, Institute of Chemistry, ul. Oleska 48, 45-052 Opole

K. Czaja

Affiliation
University of Opole, Institute of Chemistry, ul. Oleska 48, 45-052 Opole

N.Yu. Kovaleva

Affiliation
Institute of Chemical Physics, RAS, Kosygin St. 4, 11991, Moscow, Russia