Preparation of a mesoporous high surface area titanium oxo phosphate via a non-ionic surfactant route

✍ Scribed by M Thieme; F Schüth

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 461 KB
• Volume: 27
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/s1387-1811(98)00253-4

✦ Synopsis

Since the development of the first mesoporous silica materials by scientists of Mobil Oil [J.S. Beck, US Patent (Mobil Oil Corporation) 5, 057 (1991) 296 ], the synthesis principle has been applied to other metal oxides. Here, we report a new mesoporous titanium oxo phosphate, which is synthesized by a non-ionic template route (N0I 0). The formation of the mesoporous structure is dominated by hydrogen bonding between self-assembled surfactant micelles and inorganic precursors. A low-cost industrial polyethylenoxide named Dodecanol +5 EO (BASF ) was used as a non-ionic surfactant. The N 2 -adsorption isotherm reveals the existence of mesoporosity in these titanium oxo phosphates with a type IV isotherm and a BET-surface area of 350 m2 g-1, with pore sizes calculated to be approximately 4.5 nm. The materials are thermally stable up to 550°C, among the highest temperatures reported for very high surface area mesoporous oxides so far.