Porous Perovskite Fibers – Preparation by Wet Phase Inversion Spinning and Catalytic Activity
Porous Perovskite Fibers – Preparation by Wet Phase Inversion Spinning and Catalytic Activity
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DOI：
10.1002/ceat.201400097
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发表时间：
2014-07
影响因子：
2.1
通讯作者：
S. Kaiser;E. Reichelt;S. Gebhardt;M. Jahn;A. Michaelis
中科院分区：
文献类型：
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作者：
S. Kaiser;E. Reichelt;S. Gebhardt;M. Jahn;A. Michaelis
采用湿法相转化纺丝法制备了多孔钙钛矿（LaMnO3）纤维。研究了不同纺丝工艺、浆料和凝固浴组成对纤维形态和孔结构的影响。以一氧化碳氧化反应为模型反应，在微分循环反应器中测试了所制备纤维的催化活性。结果表明，通过选择合适的工艺条件，可以制备多孔催化活性纤维。催化测量证实，催化纤维表现出开放结构，允许充分利用催化活性表面，而没有颗粒内扩散限制。
Porous perovskite (LaMnO3) fibers were prepared by means of wet phase inversion spinning. The influence of different spinning procedures, slurry and coagulation bath composition on fiber shape and pore morphology was studied. The catalytic activity of the prepared fibers was tested for carbon monoxide oxidation as a model reaction in a differential recycle reactor. The results revealed that by suitable choice of process conditions porous catalytically active fibers can be prepared. Catalytic measurements confirmed that the catalytic fibers exhibit an open structure that allows full utilization of the catalytically active surface without intraparticle diffusional limitations.