Synthesis and characterization of novel ZrO2-SiO2 mixed oxides

Materials Research

Milena Araújo Ferreira E Santos¹  Ivon Pinheiro Lôbo¹  Rosenira Serpa Da Cruz¹ 

[1] ,Universidade Estadual de Santa Cruz Departamento de Ciências Exatas e Tecnológicas Ilhéus BA ,Brasil

关键词: mixed oxides;    heterogeneous catalyst;    methylation;    sulfation;   

DOI  :  10.1590/S1516-14392014005000046

来源: SciELO

【 摘 要 】

In this study the mixed oxides ZrO2-SiO2, were synthesized by the sol-gel method with a molar ratio of 95:5 (Si/metal) and characterized by X-ray diffraction, absorption-desorption of N2, Fourier transform infrared spectroscopy, thermal gravimetric analysis, temperature-programmed desorption of ammonia, and acidity test by titration. The synthesized materials, which are amorphous to X-rays, are composed of a mixture of micro- and mesopores. They show a higher acid strength than the separate oxides, indicating that the ZrO2 is highly dispersed in the silica matrix.

【 授权许可】

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