A novel synthesis process of ETS-4 titanosilicate using commercial anatase in the absence of fluoride ions

• Published in: International journal of minerals, metallurgy and materials metallurgy and materials, 2012-08, Vol.19 (8), p.675-678
• Main Authors: Liu, Li-ying, Tan, Wen-jun, Xiao, Penny, Zhai, Yu-chun
• Format: Article
• Language: English
• Subjects: Adsorption; Anatase; Ceramics; Characterization and Evaluation of Materials; Chemical synthesis; Chemistry and Materials Science; Composites; Corrosion and Coatings; Diffraction; Fluorides; Glass; Ions; Materials Science; Metallic Materials; Methane; Natural Materials; Physicochemical properties; Purity; Seeds; Surfaces and Interfaces; Synthesis; Thermogravimetric analysis; Thin Films; Tribology; X-ray diffraction; X-射线衍射仪; 合成过程; 商业; 扫描电子显微镜; 氟离子; 种子形成; 钛硅酸盐; 锐钛矿型
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-012-0612-4

A novel synthesis process for ETS-4 titanosilicate using commercial anatase as the titanium source in the absence of fluoride ions was studied. Fluoride ions and traced ETS-4 seeds have important roles in forming ETS-4 structures. However, the method using ETS-4 seeds instead of fluoride ions to improve product purity and productivity is environment-friendly. ETS-4, ETS-4（NS）, and ETS-4（NaF） were respectively synthesized using traced ETS-4 seeds, without seeds, and with fluoride ions. The as-synthesized samples were identified by X-ray diffraction, scanning electron microscopy, and thermogravimetric analysis. Adsorption isotherms and adsorption heats of nitrogen and methane on the prepared ETS-4 were also measured. The results showed that ETS-4 samples could be prepared using anatase in the absence of fluoride ions, with good purity, comparable physicochemical properties, and excellent adsorption properties.