Improvement of thermal stability of Ti-Zr mesoporous oxides using CTAB surfactant templates mixed with auxiliary organic additives

摘要

Several auxiliary organic additives such as dodecylamine, Triton-X 100, triethanolamine and hexamethylenetetramine (HMTA) were all found to be able to improve thermal stability of the 1:1 molar ratio Zr/Ti mesoporous oxides prepared from inorganic salt precursors using cetyltrimethylammonium bromide (CTAB) under hydrothermal conditions. Particularly, a high surface area, i. e., 386 m~2/g was available on the Ti-Zr mesoporous oxides prepared from CTAB and HMTA after calcinations at 450°C, meanwhile the mesoporous structures still retained on the calcined sample.