Filtration Behavior of Nanoparticulate Ceria Slurries
Filtration Behavior of Nanoparticulate Ceria Slurries
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纳米颗粒二氧化铈浆料的过滤行为
DOI：
10.1111/j.1151-2916.2002.tb00519.x
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Y. Hirata
中科院分区：
文献类型：
--
作者：
A. Dietrich;A. Neubrand;Y. Hirata
研究了聚丙烯酸（PAA）浓度和分子量对粒径为20 nm的CeO 2浆料过滤性能的影响。低粘度悬浮液可以通过吸附覆盖纳米颗粒的PAA单层来产生。对于所研究的所有悬浮液，滤饼渗透率低于Kozeny-Carman方程预测的渗透率，并且由于颗粒表面上存在3-5 nm厚的可压缩PAA层而随着过滤压力的增加而降低。由于堵塞，纳米颗粒滤饼的渗透性随着聚合物添加量的增加而降低。
The influence of poly(acrylic acid) (PAA) concentration and molecular weight on the filtration behavior of CeO 2 slurries with 20 nm particle size was studied. Low-viscosity suspensions could be produced by adsorbing a monolayer of PAA that covered the nanoparticles. For all suspensions investigated, the cake permeability was lower than predicted by the Kozeny-Carman equation and decreased with increased filtration pressure because of the presence of a compressible PAA layer 3-5 nm thick on the surface of the particles. The permeability of the nanoparticulate cakes decreased with increased polymer addition because of clogging.