INFLUENCE OF THE AMOUNT OF TITANIUM OXIDE ON THE TEXTURE AND STRUCTURE OF SILICA SUPPORTS FOR THE MANUFACTURE OF CATALYSTS FOR POLYMERIZATION OF ALKENES
Vol. 25 No. 97 (2001), Chemical Sciences
Vol. 25 No. 97 (2001)

INFLUENCE OF THE AMOUNT OF TITANIUM OXIDE ON THE TEXTURE AND STRUCTURE OF SILICA SUPPORTS FOR THE MANUFACTURE OF CATALYSTS FOR POLYMERIZATION OF ALKENES

Chemical Sciences
https://doi.org/10.18257/raccefyn.25(97).2001.2789
Published 2024-08-02
Rodolfo Alejandro Castillo Córdoba
Ingeniero Químico, Master Scientiae en Ingeniería Química, Especialista en Catálisis Básica Aplicada. Monómeros Colombo Venezolanos.
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Castillo Córdoba, R. A. (2024). INFLUENCE OF THE AMOUNT OF TITANIUM OXIDE ON THE TEXTURE AND STRUCTURE OF SILICA SUPPORTS FOR THE MANUFACTURE OF CATALYSTS FOR POLYMERIZATION OF ALKENES. Revista De La Academia Colombiana De Ciencias Exactas, Físicas Y Naturales, 25(97), 563–568. https://doi.org/10.18257/raccefyn.25(97).2001.2789
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Abstract

Samples obtained by grafting various amounts of titania onto silica using titanium IV isopropoxide in isopropyl alcohol were studied using SBET, pore volume, XRD, ESCA, DRS, and zeta potential measurements. Very good dispersion of TiO2 over silica approaching monolayer dispersion was observed for TiO2 content lower than about 15% w/w. At higher TiO2 content, TiO2 crystallites were formed. A strong oxide-oxide interaction with the formation of the Ti-O-Si bond was observed. The intensity of this interaction increases with the calcination temperature, but at higher TiO2 content, crystallites are formed.

https://doi.org/10.18257/raccefyn.25(97).2001.2789
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