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Preparation, Structure and Properties of Spherical SiO2-Al2O3 Composites

ZHAO Zhen-Xing, 中国科学院兰州化学物理研究所, 兰州 730000; 北京化工大学化工资源有效利用国家重点实验室, 北京100029; 中国科学院研究生院, 北京 100049, Lanzhou Institute of Chemical and Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China, XIA Chun-Gu, XUE Qun-Ji, LI Dian-Qing, LIU Peng-Cheng
2007 Wuli huaxue xuebao  

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1 中国科学院兰州化学物理研究所, 兰州 730000; 2 北京化工大学化工资源有效利用国家重点实验室, 北京 100029; 3 中国科学院研究生院, 北京 100049) 摘要: 将 Na 2 SiO 3 ·9H 2 O 溶液通过强酸性阳离子树脂进行离子交换得到酸性硅溶胶, 再将硅溶胶与铝溶胶及六 次甲基四胺混合后采用油柱成型法制备了球形 SiO 2 鄄Al 2 O 3 复合氧化物. 通过 XRD、 BET 及 TPD 等手段对样品进 行测试和表征, 结果表明,600 益焙烧得到的 SiO 2 鄄Al 2 O 3 中 SiO 2 以无定型形式存在, 其比表面、孔容与表面酸性 随 SiO 2 含量的增加而提高, 孔径、 堆密度随 SiO 2 含量的提高而减小, 压碎强度基本保持不变. 关键词: 球形 SiO 2 鄄Al 2 O 3 复合物; 油柱成型法; 无定型; 结构与性能 中图分类号: O649 Abstract: AcidicsiliconsolwaspreparedbyionexchangeusingNa 2 SiO 3 ·9H 2
more » ... icalSiO 2 鄄 Al 2 O 3 compositeswerepreparedbyoil鄄dropmethodaftermixingofsiliconsol,hexamethylenetetramine,and aluminiumsol.ThesampleswerecharacterizedandanalysizedbyXRD,BET,andTPD.TheresultsshowedthatSiO 2 existedinSiO 2 鄄Al 2 O 3 compositesinamorphousphaseandthatspecificsurfacearea,porevolume,andsurfaceacidity increasewiththeincreaseofSiO 2 content,accompaniedwiththedecreaseofaverageporediameterandbulkdensity. Thecrashstrengthkeptapproximateconstant.
doi:10.3866/pku.whxb20070419 fatcat:c67b3yfka5e53l27rmit3kzpie
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ZHAO Zhen-Xing, 中国科学院兰州化学物理研究所, 兰州 730000; 北京化工大学化工资源有效利用国家重点实验室, 北京100029; 中国科学院研究生院, 北京 100049, Lanzhou Institute of Chemical and Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China; State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China; Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China, XIA Chun-Gu, XUE Qun-Ji, LI Dian-Qing, LIU Peng-Cheng. "Preparation, Structure and Properties of Spherical SiO2-Al2O3 Composites." Wuli huaxue xuebao 23.04 (2007) 549-553