Al2O3/SiO2 Materials with Bimodal Pore Size Distribution as Support for Heterogeneous Catalysts

Natalya Litvyakova; Tatiana Bugrova; Grigory Mamontov

doi:10.4028/www.scientific.net/AMR.1085.79

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1085Al2O3/SiO2 Materials with Bimodal Pore Size...

Al₂O₃/SiO₂ Materials with Bimodal Pore Size Distribution as Support for Heterogeneous Catalysts

Abstract:

The Al₂O₃/SiO₂ materials prepared by impregnation of mesoporous silica with water solution of Al(NO₃)₃·9H₂O were suggested to be used as supports for catalyst of high-temperature catalytic reactions. It was shown that the distribution of Al₂O₃ component inside wide pores of silica (10-50 nm) occurs with the formation of Al₂O₃ layer in case of low loading and porous layer or particles, if Al₂O₃ loading increases. Thus, materials with bimodal pore size distribution were obtained. The Cr-containing catalysts were prepared on the basis of these supports and tested in the process of isobutane dehydrogenation at 540 °C. It was observed that the activity of the obtained Cr/Al₂O₃/SiO₂ materials was comparable with the one for Cr/Al₂O₃ catalyst. Thus, the suggested Al₂O₃/SiO₂ materials with unique porous structure are promising to be used as supports for catalysts for high-temperature reactions.

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Advanced Materials Research (Volume 1085)

Pages:

79-83

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1085.79

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Online since:

February 2015

Authors:

Natalya Litvyakova, Tatiana Bugrova, Grigory Mamontov*

Keywords:

Alumina-Modified Silica, Bimodal Pore Size Distribution, C₄-C₅ Hydrocarbon Dehydrogenation, Heterogeneous Catalysts, Support

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