Precipitation of Nanosized and Nanostructured Powders: Process Intensification and Scale-Out Using a Segmented Flow Tubular Reactor (SFTR)
Precipitation of Nanosized and Nanostructured Powders: Process Intensification and Scale-Out Using a Segmented Flow Tubular Reactor (SFTR)
复制标题
DOI：
10.1002/ceat.201000324
复制
发表时间：
2011-03-01
影响因子：
2.1
通讯作者：
Bowen, Paul
中科院分区：
文献类型：
--
作者：
Aimable, Anne;Jongen, Nathalie;Bowen, Paul
成功的规模扩大和过程强化使用分段流动管式反应器（SFTR）超细碳酸钙，钛酸钡，和纳米氧化锌从优化的小批量（20 mL）的条件。SFTR在工艺强化方面的能力通过生产类似于5 kg批次的BaTiO 3粉末来证明，具有出色的批次间重现性。SFTR按比例扩大或增加的能力被证明为纳米结构的CaCO 3在500克的批次，通过按比例扩大从一个到六个分段的流动管式反应器平行运行（按比例扩大/增加比为5000相比，实验室批量实验）。SFTR然后被用来证明其潜力的纳米ZnO粉末生产50克批次的这些纳米粉末在一个连续的过程中，250的比例扩大/放大比相比，实验室批量实验没有任何损失的粉末质量。SFTR允许精确控制沉淀条件，从而获得粉末特性的优异再现性，并显示出作为具有高度受控特性的粉末和先进纳米材料的简单生产工艺的巨大前景。
The successful scale-out and process intensification using a segmented flow tubular reactor (SFTR) for ultrafine CaCO3, BaTiO3, and nanosized ZnO from optimized minibatch (20 mL) conditions is presented. The capacity of the SFTR in process intensification was demonstrated by producing similar to 5 kg batches of BaTiO3 powders with excellent batch-to-batch reproducibility. The SFTR scale-out or numbering-up capacity was demonstrated for a nanostructured CaCO3 in 500 g batches by scaling-out from one to six segmented flow tubular reactors run in parallel (scale-out/-up ratio of 5000 compared to lab batch experiments). The SFTR was then used to demonstrate its potential for nanosized ZnO powders producing 50 g lots of these nanopowders in a continuous process, a scale-out/-up ratio of 250 compared to lab batch experiments without any loss of powder quality. The SFTR allows a precise control of precipitation conditions, leading to an excellent reproducibility in powder characteristics, and shows great promise as a simple production process of powders and advanced nanomaterials with highly controlled properties.