Thermal behaviour of titanium in host matrix clay

Materials Research

Cristina Volzone¹  Ana María Cesio¹ 

[1] ,CONICET Centro de Tecnología de Recursos Minerales y Cerámica Buenos Aires,Argentina

关键词: titanium;    clay;    thermal treatment;    montmorillonite;   

DOI  :  10.1590/S1516-14392009000200013

来源: SciELO

【 摘 要 】

Titanium in hosted by a clay matrix has important applications in a variety of catalysts. However, there is insufficient information about of textural and structural characteristics of the titanium in matrix clay at room temperature and after thermal treatment. In this study, titanium in host matrix clay was obtained by treating montmorillonite clay minerals with different OH-Ti solutions. The titanium-solutions containing partially hydrolyzed titanium were obtained using a TiCl4 solution with and without the addition of glycerol. The amount of Ti added to the solid was 20 mmol Ti per gram of clay. Thermal treatments were carried out at 500 and 1,000 °C in an air atmosphere. The solids were characterized by X ray diffraction, thermal analyses, infrared spectroscopy, N2 adsorption-desorption isotherms. The products presented different structural and textural characteristics and, after calcination at 1,000 °C, anatase and rutile in different proportions were present in the samples.

【 授权许可】

CC BY   
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