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运用现代测试分析手段XRD、TEM和DTA等 ,对溶胶—凝胶法制备La1-xSrxCoyFe1-yO3 -δ混合型导体透氧膜粉料的工艺和性能进行了较详细的研究。实验结果表明 :溶胶的pH =6 - 8,脱水温度在 80℃左右 ,干凝胶在95 0 - 10 0 0℃下保温 2小时焙烧 ,可获得透氧性能较高的La1-xSrxCoyFe1-yO3 -δ粉料。
The preparation and performance of La1-xSrxCoyFe1-yO3-δ mixed conductor oxygen-permeable membrane prepared by sol-gel method were studied in detail by using modern testing methods XRD, TEM and DTA. The experimental results showed that when the pH value of the sol was 6-8 and the dehydration temperature was about 80 ℃, the xerogel was calcined at 95 0-10 000 ℃ for 2 hours to obtain the La1-xSrxCoyFe1-yO3- δ powder.