摘要
The technique to prepare TiH\-2 coated with layers of Al\-2O\-3 particles by heterogeneous nucleation method with HAc\|NaAc buffer solution as precipitation reagent was studied. The results show that the microscopic structure of Al\-2O\-3 coating layers depends on the pH value and Al\+\{3+\} concentration range in the solution. The homogeneous and compact coating layers with Al\-2O\-3\|coated TiH\-2 particles can be obtained at 0.05 mol/L and pH=4.5, after heating at 350 ℃. The hydrogen releasing of Al\-2O\-3/TiH\-2 particle is notably delayed with the increase of the temperature, and the delay effect can be used in the production of Al foams.
The technique to prepare TiH\-2 coated with layers of Al\-2O\-3 particles by heterogeneous nucleation method with HAc\|NaAc buffer solution as precipitation reagent was studied. The results show that the microscopic structure of Al\-2O\-3 coating layers depends on the pH value and Al\+\{3+\} concentration range in the solution. The homogeneous and compact coating layers with Al\-2O\-3\|coated TiH\-2 particles can be obtained at 0.05 mol/L and pH=4.5, after heating at 350 ℃. The hydrogen releasing of Al\-2O\-3/TiH\-2 particle is notably delayed with the increase of the temperature, and the delay effect can be used in the production of Al foams.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2002年第9期1784-1786,共3页
Chemical Journal of Chinese Universities
基金
陕西省自然科学基金 (批准号 :2 0 0 0 C3 2 )
陕西省教育委员会基金 (批准号 :99JK2 2 8)资助
