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1. 发明申请

US20100284902A1 Continuous process for the preparation of sodium titanate nanotubes 有权
标题翻译：制备钛酸钠纳米管的连续工艺
公开(公告)号：US20100284902A1
公开(公告)日：2010-11-11
申请号：US12007970
申请日：2008-01-17
申请人： Edisson Morgado Junior , Marco Antonio De Abreu , Gustavo Torres Moure
发明人： Edisson Morgado Junior , Marco Antonio De Abreu , Gustavo Torres Moure
IPC分类号： C01G23/04 , C01D1/02
CPC分类号： C01G23/005 , B82Y30/00 , C01P2002/72 , C01P2004/04 , C01P2004/13 , C01P2004/61 , C01P2004/62 , C01P2004/64 , C01P2006/12
摘要： The invention relates to a continuous process for the preparation of sodium titanate nanotubes and their derivatives obtained by ion exchange and/or thermal treatment, by reacting titanium oxides with sodium hydroxide under suitable hydrothermal conditions to obtain or control the morphology of nanostructural titanates.The method is carried out continuously in one or more reactors connected in series, where the reaction mixture is introduced continuously into the reactor at a feed rate that is the same as the rate of discharge of the product. When more than one reactor is used, the material leaving the first reactor is used to feed the next reactor, and preferably a temperature differential is applied between the reactors in such a way as to obtain a mean temperature of between 60 and 180° C., and the overall reaction time is short, being about 90 minutes or less.The nanostructures obtained can be later subjected to ion exchange and/or thermal treatment in an inert, oxidizing or reducing atmosphere in order to prepare adsorbents, catalysts, photocatalysts, electrocatalysts, or else electrodes for photovoltaic cells, lithium batteries, gas sensors and systems for the separation and storage of hydrogen.
摘要翻译：本发明涉及通过离子交换和/或热处理制备钛酸钠纳米管及其衍生物的连续方法，通过在合适的水热条件下使二氧化钛与氢氧化钠反应以获得或控制纳米结构的钛酸盐的形态。该方法在连续串联的一个或多个反应器中连续进行，其中反应混合物以与产物的排放速率相同的进料速率连续引入反应器。当使用多于一个反应器时，离开第一反应器的材料用于进料下一个反应器，并且优选地在反应器之间以这样的方式施加温差以获得在60和180℃之间的平均温度。，总反应时间短，为约90分钟以下。所获得的纳米结构可以在惰性，氧化或还原气氛中进行离子交换和/或热处理，以制备吸附剂，催化剂，光催化剂，电催化剂，或用于光伏电池的电极，锂电池，气体传感器和用于氢的分离和储存。

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