Synthesis of mesoporous TiO2 materials with high specific area using inorganic acids as catalysts--颗粒学报PARTICUOLOGY

Huang, D., Luo, G., Yang, L., & Wang, Y. (2005). Synthesis of mesoporous TiO2 materials with high specific area using inorganic acids as catalysts. China Particuology, 3(3), 176-180. https://doi.org/10.1016/S1672-2515(07)60082-7

Synthesis of mesoporous TiO₂ materials with high specific area using inorganic acids as catalysts

Dan Huang, Guangsheng Luo ^*, Liming Yang, Yujun Wang

The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, P. R. China

10.1016/S1672-2515(07)60082-7

Volume 3, Issue 3, June 2005, Pages 176-180

Received 11 January 2005, Accepted 24 March 2005, Available online 27 November 2007.

E-mail: gsluo@tsinghua.edu.cn

Highlights

Abstract

This paper presents a synthesis process for preparing mesoporous titanium dioxide materials in the absence of any templates and using inorganic acids as catalysts. Tetrabutyl titanate was used as the precursor at ambient temperature, and four different inorganic acids, i.e., hydrochloric, nitric, sulfuric and phosphoric, were used as catalysts. The as-prepared mesoporous TiO₂ materials were characterized by SEM, XRD and nitrogen adsorption/desorption measurements. The influences of different inorganic acids on the properties of TiO₂ were discussed and compared in details. Experiments showed that the inorganic acids have significant effects on the surface area, pore volume, pore size, and pore size distribution of the products. The mesoporous TiO₂ materials catalyzed by phosphoric acid exhibited the largest specific surface area and largest pore volume with narrow pore size distribution. Vacuum and infrared drying methods tested in the process were found to have subtle impact on the structure of the TiO₂ materials prepared.

Graphical abstract

Keywords

mesoporous; TiO₂; inorganic acids; infrared drying

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