Glycothermal Synthesis of Thermodynamically unstable Mixed Oxides

这一研究已经被引入了一种糖基热反应，因为这个研究人员已经开发出了各种金属氧化物的纳米晶体合成物，可以应用于金属氧化物的合成物。在1997年，六角LnFeO形成的反应机制D23-D2对稀有土乙酸酯反应的详细情况进行了测试，并发现了后续点： （1）起始材料的反应受到配体的热稳定性的控制。（2） Higher reaction temperature increases the instability of hexagonal LnFeOイD23イエD2 and therefore increases the solubility of the phase resulting in an increase in the particle size of the product。（3）当反应被携带在一小块石榴石晶体的存在中，六角LnFeO D23-D2没有形成，但稀有的地球铁石榴石形成。它包含了一个主要因素，因为Metastable阶段的形成是热力学I。 ... More 糖基化中间体的稳定性，是什么会给最终产品的形成带来更大的动力？在1998年，对稀有土乙酸酯的indium alkoxide的反应，对乙酰丙酮酸Gallium的反应，以及对四乙基硅酸盐的钛alkoxide的反应。First reaction yielded the In_第二反应：有能力的大表面区域氧化铝-gallium氧化物固体解决方案具有可金属γ-氧化铝的晶体结构。最后的反应沉积了一种钛硅固体解决方案，使其具有Anatase晶体结构。在这个反应中，一个很大的表面区域被反应温度低的情况下售出了一个解决方案。在从事工作的过程中，本研究人员还分析了在2-乙基乙醇中发现的陶瓷金属反应，并在反应作用下找到了一种超精细陶瓷颗粒的透明胶体解决方案（2nm直径）。原因之一是为什么这种反应有能力产生独特的特性，因为硅金属的氧化使其成为一种更大的驱动力。Less（低）

This research has been carried out show that the glycothermal reaction, which this researcher has developed to synthesis nanocrystals of various metal oxides, can be applied for the synthesis of the metastable metal oxides. In 1997, the reaction mechanisms for the formation of hexagonal LnFeOィイD23ィエD2 by the reaction of iron acetylacetonate with rare earth acetates was examined in detail and the following points were found : (1) Reactivity of the starting material was controlled by the thermal stability of the ligand. (2) Higher reaction temperature increases the instability of hexagonal LnFeOィイD23ィエD2 and therefore increases the solubility of the phase resulting in an increase in the particle size of the product. (3) When the reaction was carried out in the presence of a small amount of garnet crystals, hexagonal LnFeOィイD23ィエD2 was not formed but rare earth iron garnet was formed. It was concluded that the prime factor for the formation of the metastable phase is the thermodynamical i … More nstability of the glycoxide intermediate, which gives large driving force for the formation of the final product. In 1998, the reaction of indium alkoxide with rare earth acetates, the reaction of aluminum isopropoxide with gallium acetylacetonate, and the reaction of titanium alkoxide with tetraethyl silicate were examined. The first reaction yielded the InィイD22ィエD2OィイD23-ィエD2LnィイD22ィエD2OィイD23ィエD2 solid solutions but metastable unidentified phases were also formed. The second reaction afforded large-surface area alumina-gallium oxide solid solutions having a crystal structure of metastable γ-alumina. The last reaction yielded a titania-silica solid solution having the anatase crystal structure. In this reaction, the sold solution with quite a large surface area was obtained by lowering the reaction temperature. During the course of the work mentioned above, this researcher also examined the reaction of cerium metal in 2-ethoxyethanol and found that the reaction afford a transparent colloidal solution of ultrafine ceria particles (2 nm diameter). One of the reason why this reaction afforded ceria having unique properties was that the oxidation of cerium metal gave quite a large driving force to the reaction. Less