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麒麟3283

银虫 (正式写手)

[求助] 溶胶凝胶法中 胶体的干燥及焙烧

用Sol-Gel法做了几个催化剂,溶胶做出后老化一周,进行干燥,在普通烘箱100-120 °C下干燥一周也除不去胶体中的水(胶体体积大幅缩小,很粘稠),管式炉焙烧时会有水汽出。采用真空干燥,60-100 °C 两天后胶体硬如石块(不知效果如何),从瓷皿内很难取出。请教大虾,怎样的胶体干燥与焙烧是合适的,最终有利于催化剂颗粒的分散和孔道结构。
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IConan

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2楼2014-04-11 09:25:28
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1002864290

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引用回帖:
2楼: Originally posted by IConan at 2014-04-11 09:25:28
同问

同求
3楼2014-04-12 09:22:18
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liyanyan_87

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引用回帖:
3楼: Originally posted by 1002864290 at 2014-04-12 09:22:18
同求

用真空干燥箱。120℃ 12小时
好好学习
4楼2014-05-07 15:01:28
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