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Thermal Decomposition of Titanium Alkoxide and Silicate Ester in Organic Solvent: A New Method for Synthesizing Large‐Surface‐Area, Silica‐Modified Titanium(IV) Oxide of High Thermal Stability
Author(s) -
Kominami Hiroshi,
Kohno Masaaki,
Matsunaga Yukino,
Kera Yoshiya
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00811.x
Subject(s) - rutile , calcination , anatase , titanium , alkoxide , thermal decomposition , materials science , thermal stability , orthosilicate , chemical engineering , silicate , oxide , titanium oxide , inorganic chemistry , toluene , mineralogy , tetraethyl orthosilicate , photocatalysis , chemistry , catalysis , metallurgy , organic chemistry , nanotechnology , engineering
Silica‐modified titanium oxide (S‐TiO 2 ) powders that have an anatase structure were synthesized via the thermal decomposition of mixtures of titanium(IV) isopropoxide (TIP) and tetramethyl orthosilicate (TMOS) in toluene at 300°C. These S‐TiO 2 materials had high rutile‐transformation temperatures and maintained large surface areas at elevated temperatures (550°–1000°C). For example, the product that was prepared from a 9:1 TIP:TMOS mixture transformed to rutile at ∼1100°C and possessed a surface area of 160 m 2 /g, even after calcination at 800°C for 1 h.