FAQ
Which Product Variations of Alumina are Available?
General
Standardized alumina has become
synonymous with Dynamic Adsorbents, Inc.'s Alumina for chromatography
has contributed to the continued growing use of this material, in a
diverse number of applications. Aluminas are unique products; e.g.,
Super I, Std Act I, etc: High activity alumina can be used for polar
samples in nonpolar solvents, and for the purification of solvents.
Lower activities of alumina can readily be obtained by the addition of
polar media, especially water. Thus, each problem can be resolved via
the adjustment of the sorption system, as required for each problem.
DAI produces a number of specialty aluminas that deal with PCB removal,
pyrogen removal, purifying separating and product formulations in the
radioactive field, solvent purification, pilot and process, gas and
liquid dehydration, removal of lead and heavy metals from water,
scavenger alumina for impurities, decolorization, and removal of arsenic
from water, among other things.
Dynamic Adsorbents, Inc. aluminas are
manufactured and quality assured providing world class laboratory and
pilot process chromatographic materials. We control the manufacturing
process from raw material to finished product, unique in our industry.
We carefully control the physical
characteristics of pore size, surface area, particle size and surface
chemistry to ensure reproducible optimized chromatographic behavior for:
k' - uniform capacity • - reproducible
selectivity
RS- improved resolution
N - excellent performance
Careful attention is paid to quality
control procedures reproducible performance regardless of the technique
used, especially when transferring from one technique to another.
General alumina products include the following:
Super Activity I
Super Activity I Aluminas are unique as
DAI's products; they provide twice the capacity compared to Standard
Activity l; Surface modifications available are, "A" (Acid), "B"
(Basic), and "N" (Neutral). Super Activity I Aluminas constitute the
starting material for the Dynamic Adsorbents line of Aluminas. A special
feature of Super Activity I is absolutely constant deactivation behavior
which is valid for the deactivation process as well as when in contact
with the chromatographic solvent.
Alumina Standard Activity I
Alumina Standard Activity I (Act l) is
available with multiple surface modifications, A, B, and N, that
facilitate the separation of a wide range of compounds. In addition to
pH, the activity of the surface of Alumina can mediate the separation.
Adjusting the activity can be altered by simply changing the water
content of the alumina. (Alternatively; other polar media can replace
the water.).
Use high activity Alumina (Std Act I,
Super Act l) for the separation of polar samples in nonpolar solvent
systems ....and for the purification of solvents. (see chart to the
right) Use lower activity Alumina for less polar samples. (See
Deactivation Protocols in catalog)
DCC (Dry Column Chromatography) Alumina
DCC - Dry column chromatography is a
versatile Prep LC method that bridges the gap between analytical TLC and
preparative column chromatography. (Request DCC Application Guide)
Flash” Chromatography Alumina
Flash Chromatography is a rapid Prep LC
technique that facilitates the separation of 0.1-100g of material via
simple economical laboratory protocols. (Request “Flash” Application
Guide) 40 micron Flash grade is available in both bottles and drums.
Alumina Activity II, III
Alumina II - III sorbents are
economical adsorbents of medium activity. Use this material for general
purpose scouting and in cases where the use of carbon black is precluded
due to its organic nature. Also, use Alumina II - III as a replacement
for organic/polymeric ion exchangers, especially when it is necessary to
overcome temperature and radiation cleavage problems.
Specialty Aluminas
DAI produces a number of specialty
aluminas that deal with PCB removal, pyrogen removal, purifying
separating and product formulations in the radioactive field, solvent
purification, pilot and process, gas and liquid dehydration, removal of
lead and heavy metals from water, scavenger alumina for impurities,
decolorization, and removal of arsenic from water, among other things.
Alumina C (for PCB Removal)
Alumina C is a chemically and
physically modified Alumina for the analysis and removal of PCB’s. This
material has wide use and application in/for:
- Analysis
- Environmental Clean-Up
- Solvent Purification
- Electric Utilities: Transformer Oil
- Soil run off, Water Studies
Alumina for Dioxin Analysis
AL 5788 has been developed for doing
dioxin analysis. It is a 50-200 micron particle.
Alumlna for Solvent Purification
Alumina is an ideal media for many solvent clean-up applications
(Please see "Solvent Purification" paper by M.L. Moskovitz)
Alumina for Pilot and Process
Based on DAI's expertise, Aluminas can
be produced according to customer’s specifications. They are used for
batch processes as well as for production size chromatography. (Please
request information and technical assistance.)
DrysphereTM Activated Alumina Balls
Activated Alumina is an aluminium oxide
that is highly porous and exhibits tremendous surface area. Activated
Alumina is resistant to thermal stock and abrasion and will not shrink,
swell, soften nor disintegrate when immersed in water.
Surface area are in the range 345-415 .
Because it has a higher capacity for water than Silica Gel at elevated
temperatures it is mainly used as a desiccant for warm gases including
air.
Applications:
- Purification of gases and liquids (removal of metallic traces, TBC and
HF compounds).
- Drying of organic liquids such as LPG, propylene, butene, steam
cracked liquids, cyclohexane, gasoline, chloro- and fluorohydrocarbons,
aromatic solvents.
- Drying of air and gases such as steam cracked gases, catalytic
reforming recycle gas, synthesis gas, natural gas, CO2.
- Drying of organic liquids as LPG, aromatics, steam cracked liquids,
gasoline, chloro- and fluorocarbons.
- Drying of air and gases as steam cracked gases, catalytic reforming
recycle gases, synthesis gases, methyl chloride, natural gas, LNG, etc.
- Drying of hydrogen, oxygen, nitrogen, CO2, etc.
- Purification of gases and liquids (removal of metallic traces, BF3, TBC, HCl, HF and fluorinated hydrocarbons).
- Catalyst for Claus conversion in sub dew point processes.
- Air drying (PSA, TSA)
- Instrument air, supersonic wind tunnel, compressed air
- Gas drying Air separation plants, inert and rare gases, Hydrogen,
oxygen, nitrogen, CO2.
- Natural gas in production and compression plants, LPG, LNG.
- Aromatics, naphtha cuts and cracked gas.
AL 2000 - For Removal of Lead from
Water
AL 2000 is a large particle (+200
micron) specially modified, chemically treated Alumina that has been
designed for the removal of metal ions, especially dissolved lead and
other cations from water.
AL 2100 -Scavenger Alumina for Process
Clean-up
Scavenger Activated Alumina is used for
process scale removal of impurities. Its high macroporosity improves
diffusion rates and the high surface area provides enhanced capacity.
AL 2300 - For Bio-Mass Clean-up
AL 2300 is designed for removing
bio-mass in nutraceutical or natural product purification.
AL 5000 for Removal of LEAD and other
Heavy Metals from Water
AL 5000 is a +50 micron spheriodal
Alumina that can readily remove Lead and other heavy metals from Water.
Metal Cation selectivity is Fe III> Cr III> Al III> Pb> Ag II> Zn II> Co
II> Cd II.
AL 5005 for Decolorization
AL 5005 is a 50 micron spheroidal,
macroporous high surface area, high performance Alumina, for the removal
of color, dyes, and clean-up of water.
Alumina P for Pyrogen Removal
This material was developed
specifically for the removal of Pyrogens in solution. Pyrogens are
typically complex carbohydrates which preferentially sorb to Alumina P.
Ideal for anti-biotic production and other types of bio-technology
products.
Alumina R
Alumina R is an Alumina which is used
for purifying, separating, and product formulations in the radio-active
field; used for the production of various generators where one isotope
is retained while the other is eluted. Mainly its improved exchange
properties and the constant elution behavior will contribute to its
reliability.
AL 5500 for Arsenic Removal from Water
AL 5500 is a specific macropore
designed for the removal of arsenic from water or air vapor. Ideal for
run-off water contaminated with arsenic.
AL 5900 Activated Wide-Pore Aluminas
Wide-Pore aluminas are available in
various pore sizes up to amacropore of 1000Å. Ideal for Biotechnology,
environmental, and petroleum uses.
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