无机材料学报2001，Vol.16Issue(3)：510-514,5.
硼掺杂的γ-A12O3催化膜的制备及其热稳定性的研究
Preparation of B-doped γ-A12O3 Catalysis Membrane and the Improvement of Its Thermal Stability
陈天蛋 1施剑林 1汪霖 1陈航榕 1华子乐1
作者信息
摘要
Abstract
The pure and Boron-doped γ-Al2O3 membranes were synthesized by the sol-gel method and the thermal stability of the unsupported alumina membrane was studied by determining the pore structure change of the membranes, including average pore size, pore volume and BET surfacearea. The experimental results show that the average pore size of the pure alumina membrane increases sharply after sintering at temperatures higher than 1000℃. Addition of 16% Boron can considerably stabilize the pore structure of the unsupported alumina membrane. The pore diameter for the B-doped membrane is stabilized within 13nm after sintering at 1200℃ for 5h.The substantial increase in the pore size for the pure alumina membrane at the sintering temperatures of 1000～1200℃ is accompanied by the phase transformation from γ-Al2O3 to γ-Al2O3. The addition of Boron can raise this phase transformation significantly and thus the thermal stability of the membranes is improved.关键词
γ-A12O3膜/硼掺杂/催化膜制备/热稳定性/微孔结构分类
数理科学引用本文复制引用
陈天蛋,施剑林,汪霖,陈航榕,华子乐..硼掺杂的γ-A12O3催化膜的制备及其热稳定性的研究[J].无机材料学报,2001,16(3):510-514,5.
