76
GCCOLUMNS |
APPLICATION-SPECIFICCOLUMNS
Petroleum & Petrochemical
LightHydrocarbonAnalysis
Rt®-AluminaBOND/Na
2
SO
4
Columns
(fusedsilicaPLOT)
(Na
2
SO
4
deactivation)
Rt®-AluminaBONDColumns
1. Highly selective forC1-C5hydrocarbons; separates all unsaturatedhydrocarbon
isomers above ambient temperatures.
2. Reactivityof aluminumoxide stationaryphase isminimized so that column
response for polar unsaturates, such as dienes, is optimized.Column sensitivity
or response ensures a linear andquantitative chromatographic analysis for these
compounds.
3. Strongbondingprevents particle generation.The column canbeused in valve
switchingoperations,without release of particles that canharm the injection and
detection systems.
4. TheRt®-AluminaBOND column is stableup to200 °C. If water is adsorbedon
the column, it canbe regeneratedby conditioning at 200 °C. Full efficiency and
selectivitywill be restored.
5. High capacity and loadability give exceptionally symmetric peaks; ideal for volatile
hydrocarbon separations at percent levels, aswell as impurity analyses at ppm
concentrations.
Rt®-AluminaBOND columns show
unique retention characteristics for
hydrocarbons.
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RefinerygashydrocarbonsonanRt®-AluminaBOND/Na
2
SO
4
column.
Column:
Rt
®
-Alumina BOND/Na
2
SO
4
, 30m, 0.53mm ID, 10.0µm (cat.# 19755)
Sample:
refinery gas hydrocarbons through C6
Inj.:
10µL split, 40mL/min. split vent flow rate
2mm split Precision
®
liner w/wool (cat.# 20823)
Inj. temp.:
200°C
Carrier gas:
helium, constant pressure (5.0psi, 34.5kPa)
Linear velocity: 37.3cm/sec.@ 60°C
Oven temp.:
60°C (hold 2min.) to 200°C@ 10°C/min. (hold 1min.)
Det.:
FID@ 200°C
Instrument:
Agilent 5890
Peak List
1. methane
2. ethane
3. ethylene
4. propane
5. propylene
6. isobutane
7.
n
-butane
8. propadiene
9. acetylene
10.
trans
-2-butene
11. 1-butene
12. isobutylene
13.
cis
-2-butene
14. isopentane
15.
n
-pentane
16. 1,3-butadiene
17.
trans
-2-pentene
18. 2-methyl-2-butene
19. 1-pentene
20.
cis
-2-pentene
21.
n
-hexane
GC_PC01139
similar
phases
GC-AluminaKCl, CP-Al
2
O
3
/KCl
Rt®-AluminaBOND/KClColumns
(fusedsilicaPLOT)
(KCl deactivation)
• Acetylene elutes beforeC4hydrocarbons (impurities inbutane/isobutane).
• Methyl acetylene (impurity in1,3-butadiene) elutes before 1,3-butadiene.
ID
df
temp. limits
30-Meter
50-Meter
0.25mm 4µm to 200°C
19776
0.32mm 5µm to 200°C
19761
19762
0.53mm 10µm to 200°C
19759
19760
ID
df
temp. limits
30-Meter
50-Meter
0.25mm 4µm to 200°C
19775
0.32mm 5µm to 200°C
19757
19758
0.53mm 10µm to 200°C
19755
19756
also
available
MetalMXT®Columns
Rugged, flexible, Siltek® treated stainless steel
tubing; inertness comparable to fused silica
tubing. See
page108
forourMXT®-Alumina
BOND/Na
2
SO
4
columns.
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
