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Sol Gel法制备纳米二氧化钛凝胶的工艺优化
光催化 纳米二氧化钛粉末 胶凝
2010/3/24
以钛酸丁酯为前驱物、无水乙醇为溶剂，在不同反应条件下研究了SolGel法制备纳米二氧化钛光催化剂的胶凝过程。 得到了制备稳定溶胶的最佳工艺条件：前驱物水解是在混合水溶液中进行，其混合液由无水乙醇、水和pH调节剂(HCl或NH3·H2O)组成，并采用滴加式加入；钛醇盐与水的摩尔比取2～3；乙醇与钛醇盐摩尔比 m 取5～8； pH值取1～2；水解温度为20～40 ℃。
Application of a Damped Oscillation Rheometer to Observe Sol-Gel Transition in a Food System
rheometer gelation soy protein logarithmic damping factor
2010/11/22
A damped oscillation rheometer was used to observe the gelation process of soy proteins. A small amount (∼1 cm3) of sample sol in a capped container was subjected to repeated rotational oscillat...
Sol-gel processes make it possible to develop new hybrid electrolyte materials of the type ceramic-polymer, known as Nano-Crystallite-Insertion-Material (NCIM). They can be used in reversible alkali e...
Influence of the pH Values of the Sol–Gel State on the Properties of SnO2 Powders Obtained From a Sol–Gel Route
the pH Values the Sol–Gel State SnO2 Powders a Sol–Gel Route
2010/12/14
The evolution of the specific surface area and crystallite size of SnO2 powders, prepared from a sol-gel process, was studied as a function of the calcination temperature of the stannic hydroxyde coll...