Mullite precursor synthesis in aqueous conditions: dependence of mullite crystallization and grain size and morphology on solution pH and precursor salt

Jae-Ean Lee; Jae-Won Kim; Je-Hyun Lee

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Mullite precursor synthesis in aqueous conditions: dependence of mullite crystallization and grain size and morphology on solution pH and precursor salt

机译：水性条件下的莫来石前体合成：莫来石结晶，晶粒尺寸和形态对溶液pH和前体盐的依赖性

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The synthesis behavior of mullite in an aqueous system was investigated. Two kinds of aluminosilicate precursor sols were prepared by the dissolution of two kinds of salt (aluminum chloride hexahydrate, AlCl_3 centre dot 6H_2O, and aluminum sulfate with 14-18 molecules of water, Al_2[SO_4]_3 centre dot 14-18H_2O) into the mixture of colloidal silica sol. The effects of the solution pH, which was controlled by addition of ammonium hydroxide (NH_4OH), and the type of aluminum salt on the mullite crystallization and the grain size and morphology in the sintered materials are discussed in this paper. It has been discovered that in an aqueous system, the mollification temperature strongly depends on the solubility and decomposition temperature of the aluminum salt used and that the pH of the initial sol impacts the grain size and morphology of mullite, in addition to the homogeneity of mixture. Mullite is synthesized at 850 deg C without resorting to the addition of an organic additive or nonaqueous solvent.

机译：研究了莫来石在水性体系中的合成行为。通过将两种盐（六水合氯化铝，AlCl_3中心点6H_2O和具有14-18分子水的硫酸铝，Al_2 [SO_4] _3中心点14-18H_2O）溶解，制备了两种铝硅酸盐前体溶胶。胶态硅溶胶的混合物。本文讨论了溶液pH值的影响，该pH值受添加氢氧化铵（NH_4OH）控制，铝盐的类型对莫来石结晶以及烧结材料的晶粒尺寸和形貌的影响。已经发现，在水性体系中，熔融温度强烈取决于所用铝盐的溶解度和分解温度，并且初始溶胶的pH除了影响混合物的均匀性外，还会影响莫来石的晶粒尺寸和形态。。莫来石是在850℃下合成的，而无需添加有机添加剂或非水溶剂。

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《Journal of Materials Research》 |2004年第4期|p.1133-1138|共6页
作者
Jae-Ean Lee; Jae-Won Kim; Je-Hyun Lee;
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作者单位

Department of Materials Science and Engineering, Changwon National University, Changwon, Kyungnam 641-773, Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
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1. Effects of precursor pH and composition on the grain morphology and size of mullite ceramics in aqueous system [J] . Jae-Ean Lee, Jae-Won Kim, Yeon-Gil Jung, Materials Letters . 2003,第21期

机译：前驱体pH和组成对水性体系莫来石陶瓷晶粒形貌和尺寸的影响
2. Synthesis behavior and grain morphology in mullite ceramics with precursor pH and sintering temperature [J] . Jae-Won Kim, Jae-Ean Lee, Yeon-Gil Jung, Journal of Materials Research . 2003,第1期

机译：pH值和烧结温度下的莫来石陶瓷的合成行为和晶粒形貌
3. Effect of organic acids precursors on the morphology and size of ZrO2 nanoparticles for photocatalytic degradation of Orange G dye from aqueous solutions [J] . Ibrahim Islam M., Moustafa Moustafa E., Abdelhamid Mohamed R. Journal of Molecular Liquids . 2016,第Null期

机译：有机酸前体对ZrO2纳米粒子形态和尺寸的影响，用于光催化降解水溶液中的橙色G染料
4. Synthesis of Mullite Precursors in Molten Salts Influence of the Aluminum Source of Salt [C] . L. Saadi, R. Moussa, A. Samdi, Conference and exhibition of the European ceramic society;ECerS-V . 1997

机译：熔盐中莫来石前体的合成对铝盐源的影响
5. Growth of textured mullite fibers using polycrystalline precursors. [D] . Yoon, Wonki. 2007

机译：使用多晶前体生长织构莫来石纤维。
6. Synthesis characterization and evaluations of TiO2 nanostructures prepared from different titania precursors for photocatalytic degradation of 4-chlorophenol in aqueous solution [O] . Amir Payan, Moslem Fattahi, Behrooz Roozbehani 2018

机译：不同二氧化钛前驱体制备的TiO2纳米结构的合成表征和评价用于水溶液中4-氯苯酚的光催化降解
7. Effects of Salt and Precursor pH on Synthesizing Behavior and Grain Morphology of Mullite in Aqueous System [O] . 2003

机译：盐和前体pH对含水系统中莫来石合成行为和晶粒形态的影响

Mullite precursor synthesis in aqueous conditions: dependence of mullite crystallization and grain size and morphology on solution pH and precursor salt

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