Multicomponent ion exchange isotherms in NaX zeolite: evaluation of Cr/Ca/Mg, Cr/Ca/K and Cr/Mg/K systems

2008 ◽  
Vol 83 (7) ◽  
pp. 983-990 ◽  
Author(s):  
Maria Angélica S.D. Barros ◽  
Pedro A. Arroyo ◽  
Eduardo F. Sousa-Aguiar ◽  
Célia R.G. Tavares
Keyword(s):  
Ion Exchange ◽  
Nax Zeolite

Fast removal of the acid properties in the NaX zeolite by ion-exchange under microwave heating

2004 ◽  
Vol 5 (3) ◽  
pp. 157-160 ◽  
Author(s):  
M.D. Romero ◽  
G. Ovejero ◽  
M.A. Uguina ◽  
A. Rodrı&#x;guez ◽  
J.M. Gómez
Keyword(s):  
Ion Exchange ◽  
Microwave Heating ◽  
Acid Properties ◽  
Nax Zeolite ◽  
Fast Removal

Equilibrium of ammonium ion exchange by NaX zeolite

1992 ◽  
Vol 88 (24) ◽  
pp. 3611-3612 ◽  
Author(s):  
Nurdan Eken Saraçoğlu ◽  
Serap Aldīkaçtī ◽  
Ayla Hasaltun ◽  
Fulya Yiğitel
Keyword(s):  
Ion Exchange ◽  
Ammonium Ion ◽  
Nax Zeolite

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

SYNTHESIS AND MAGNETIC PROPERTIES OF PLATELET SHAPE SPINEL AND M-TYPE HEXAGONAL FERRITES PREPARED FROM β'' ALUMINA-LIKE FERRITES BY ION EXCHANGE

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-937-C8-938
Author(s):  
O. Kalogirou ◽  
A. C. Stergiou ◽  
D. Samaras ◽  
S. Nicolopoulos ◽  
A. Bekka ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Ion Exchange ◽  
Hexagonal Ferrites ◽  
Platelet Shape

One-step preparative isolation of aristolochic acids by strong ion-exchange centrifugal partition chromatography

Planta Medica ◽  
2016 ◽  
Vol 81 (S 01) ◽  
pp. S1-S381
Author(s):  
AA Abdelgadir ◽  
L Boudesocque-Delaye ◽  
I Thery-Koné ◽  
A Gueiffier ◽  
EM Ahmed ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Partition Chromatography ◽  
Centrifugal Partition Chromatography ◽  
Preparative Isolation ◽  
Aristolochic Acids ◽  
One Step
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