...
【24h】

Preparation effects on zirconia aerogel morphology

机译:制备对氧化锆气凝胶形态的影响

获取原文
获取原文并翻译 | 示例
           

摘要

Small-angle X-ray scattering (SAXS) and transmission electron microscopy (TEM) of zirconia aerogels' morphology show a strong effect of the mode of supercritical drying on zirconia structure and a remarkable similarity of aerogels obtained using either acetic or nitric acid as process moderators. A fine polymeric structure in sub-nanometer scales and 20-nm polymeric aggregates were observed in aerogels obtained from the supercritical CO2 route. More massive polymeric structure in nanometer scales resulted from the standard high temperature process. Upon calcination at 773 K, all samples proved to be quite similar in morphology but a bit different in crystal structure. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 11]
机译:氧化锆气凝胶的小角度X射线散射(SAXS)和透射电子显微镜(TEM)显示超临界干燥方式对氧化锆结构的强烈影响以及以乙酸或硝酸为工艺制得的气凝胶的显着相似性版主。在从超临界CO2途径获得的气凝胶中,观察到了亚纳米级的精细聚合物结构和20 nm的聚合物聚集体。标准的高温工艺产生了纳米级的更大质量的聚合物结构。在773 K煅烧后,所有样品均被证明形态非常相似,但晶体结构略有不同。 (C)1998 Elsevier Science B.V.保留所有权利。 [参考:11]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号