Research Abstracts

Monolithic polymers are suitable polymeric supports for the preparation of molecularly imprinted membranes (MIM) applied to chiral separations. Their preparation in presence of one enantiomer selenoaminoacid compound, leads to its proper enantioresolution for determination and synthesis purposes.

Stabilized by tartaric acid, magnetic Fe3O4 nanoparticles could be successfully synthesized to form stable dispersion in water having quantum size domain. Moreover, they can be further encapsulated by silica-network to form magnetic composites.

It was shown that phase inversion is an interesting process to create complex porous structures in ceramics. This process was used to develop hollow fibre geometries. By their large specific surface area such fibres and capillaries possess a high potential in membrane applications. It could be shown

the number of activation cycles has been properly varied, according to the support characteristics. Defect-free deposits 5- to 15-micron thick, with good anchorage on the ceramic supports have been obtained (see Fig. 1). Permeation tests have been performed in a pilot loop on 10 mm O.D., 14 cm long

The main conclusion obtained from this study is that high cross flow velocity and low transmembrane pressure are recommended to recover the permeate flux of a Al2O3 ceramic membrane used in ultrafiltration of soybean oil and hexane mixture.

The nature of the pore structure is one of the most important factors along with molecular properties and the interaction with the pore (a) (b) 0.12 0.05 0.1 Pore volume (cm3/g-A) Pore volume (cm3/g-A) 0.06 0.04 0.03 0.02 0.01 0.08 0.06 0.04 0.02 Pore diameter (A) Pore diameter (A) Fig. 2. Pore size

Mullite supports were synthesized using kaolin clay containing 83% kaolinite calcinated at 1250° C for 3.5 h. Nanoporous zeolite T membranes were successfully coated on the seeded mullite supports by hydrothermal synthesis. The best morphology and fewer voids were achieved at 393 K for 30 h.

LSCF powder/MeOH suspension was used as the EPD bath. For the fabrication of uniform EPD layers, the stainless steel electrode was arranged in a porous alumina tube. Uniform