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AMBERLITE™ XAD™ Adsorbent Resins
AMBERLITE™ XAD™ polymeric adsorbents are very porous spherical
polymers based on highly crosslinked, macroreticular polystyrene, aliphatic,
or phenol-formaldehyde condensate polymers. Their high internal surface
areas can adsorb and then desorb a wide variety of different species depending
on the environment in which they are used.
For example, in polar solvents such as water, polymeric adsorbents exhibit
non-polar or hydrophobic behaviour and so can adsorb organic species that
are sparingly soluble. This hydrophobicity is most pronounced with the styrenic
adsorbents. In non-polar solvents, such as hydrocarbons, etc. most adsorbents
exhibit slightly polar or hydrophilic properties and so will adsorb species
with some degree of polarity. This polarity is most pronounced with the
acrylic adsorbents and the phenolic adsorbents.
Purification strategies are developed to utilize these performance characteristics.
In capture/concentration mode, Amberlite™ XAD™ media provide an excellent
first purification step in the recovery of phenolic compounds or chlorinated
hydrocarbons. In some applications XAD resins perform decolorization. Amberlite™
XAD™ adsorbents can be used in both, batch and (preferably) column
operations.
|
AMBERLITE™ |
Matrix
|
Surface area (m2/g) |
Av. Pore diameter (Å) |
Mean diam. (µ) |
UC D90/D40 |
Applications
|
|
pStyDVB*
|
750
|
100
|
640
|
1.6
|
Removal of aromatic hydrocarbons such as phenols and pesticides from wastes. High surface area and small pores. Ideal for the extraction of smaller molecules such as phenol. Hydrophobic. | |
|
pStyDVB*
|
800
|
150
|
700
|
1.6
|
Removal of aromatic hydrocarbons such as phenols and pesticides from wastes or polar solvents. High surface area and medium sized pore for the adsorption of large color bodies. Excellent regenerability. Hydrophobic. | |
|
pStyDVB*
|
500
|
400
|
530
|
1.6
|
Removal of very large organic molecules from aqueous solutions or polar solvents. Hydrophobic. | |
|
pStyDVB*
|
800
|
150
|
400
|
1.2
|
Removal of aromatic hydrocarbons such as phenols and pesticides from wastes or polar solvents. Monodisperse. Low swelling between solvent and aqueous solutions. High surface area, excellent separation of different organic species in chromatographic processes. Hydrophobic. | |
|
Aliphatic ester |
500
|
450
|
560
|
1.7
|
Adsorption of ketones, esters and aliphatic compounds from polar solvents. Removal of polar compounds from non-aqueous solvents. Purification of bleach plant effluents from kraft pulp mills. Hydrophilic. | |
|
Formo- phenolic |
200
|
600
|
700
|
1.5
|
Removal of high molecular weight water soluble color bodies aqueous solutions such as glycerol or fermentation broth. Contains phenolic hydroxyl and methylol groups. Hydrophilic. | |
|
|
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For sampling, pricing and availability of AMBERLYST™ catalysts please contact your Rohm and Haas sales representative.
Some of our Amberlite and Amberjet ion exchange resins and Amberlyst catalysts are available in different particle size grades. For more information please consult your Rohm and Haas sales representative.
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