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Method for preparing porous lanthanum zirconate block
The invention discloses a method for preparing a porous lanthanum zirconate block. The method comprises the following steps: at room temperature, dissolving inorganic salt of zirconium, inorganic salt of lanthanum and a phase separation inducer in a solvent and stirring until a transparent and clarified solution is obtained; adding a drying control chemical additive and stirring; adding a gel accelerator and stirring to obtain a homogeneous solution; placing the homogeneous solution into a sealed container and standing for 10-30 minutes at 30 DEG C-80 DEG C to obtain wet gel; aging the wet gel for 12-24 hours at 35-80 DEG C, firstly cleaning the wet gel with a solvent with a low surface tension and then soaking the wet gel with a surface modifier solution, and finally cleaning with the solvent with the low surface tension; drying the cleaned wet gel for 24-72 hours at 30-90 DEG C; and then carrying out heat treatment on the dried wet gel for 2-4 hours at 400-1300 DEG C to obtain the porous lanthanum zirconate block. The porous lanthanum zirconate block, which is prepared by the method, has the characteristics of co-continuous macroporous structure, high porosity, centralized distribution of pore sizes and the like.
Method for preparing porous lanthanum zirconate block
The invention discloses a method for preparing a porous lanthanum zirconate block. The method comprises the following steps: at room temperature, dissolving inorganic salt of zirconium, inorganic salt of lanthanum and a phase separation inducer in a solvent and stirring until a transparent and clarified solution is obtained; adding a drying control chemical additive and stirring; adding a gel accelerator and stirring to obtain a homogeneous solution; placing the homogeneous solution into a sealed container and standing for 10-30 minutes at 30 DEG C-80 DEG C to obtain wet gel; aging the wet gel for 12-24 hours at 35-80 DEG C, firstly cleaning the wet gel with a solvent with a low surface tension and then soaking the wet gel with a surface modifier solution, and finally cleaning with the solvent with the low surface tension; drying the cleaned wet gel for 24-72 hours at 30-90 DEG C; and then carrying out heat treatment on the dried wet gel for 2-4 hours at 400-1300 DEG C to obtain the porous lanthanum zirconate block. The porous lanthanum zirconate block, which is prepared by the method, has the characteristics of co-continuous macroporous structure, high porosity, centralized distribution of pore sizes and the like.
Method for preparing porous lanthanum zirconate block
GUO XINGZHONG (Autor:in) / SONG JIE (Autor:in) / YANG HUI (Autor:in) / CAI XIAOBO (Autor:in)
01.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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