76
GC COLUMNS |
APPLICATION-SPECIFIC COLUMNS
Petroleum & Petrochemical
Light Hydrocarbon Analysis
Rt®-Alumina BOND/Na
2
SO
4
Columns
(fused silica PLOT)
(Na
2
SO
4
deactivation)
Rt®-Alumina BOND Columns
1. Highly selective for C1-C5 hydrocarbons; separates all unsaturated hydrocarbon
isomers above ambient temperatures.
2. Reactivity of aluminum oxide stationary phase is minimized so that column
response for polar unsaturates, such as dienes, is optimized. Column sensitivity
or response ensures a linear and quantitative chromatographic analysis for these
compounds.
3. Strong bonding prevents particle generation. The column can be used in valve
switching operations, without release of particles that can harm the injection and
detection systems.
4. The Rt®-Alumina BOND column is stable up to 200 °C. If water is adsorbed on
the column, it can be regenerated by conditioning at 200 °C. Full efficiency and
selectivity will be restored.
5. High capacity and loadability give exceptionally symmetric peaks; ideal for volatile
hydrocarbon separations at percent levels, as well as impurity analyses at ppm
concentrations.
Rt®-Alumina BOND columns show
unique retention characteristics for
hydrocarbons.
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Refinery gas hydrocarbons on an Rt®-Alumina BOND/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 2 min.) to 200°C @ 10°C/min. (hold 1 min.)
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-Alumina KCl, CP-Al
2
O
3
/KCl
Rt®-Alumina BOND/KCl Columns
(fused silica PLOT)
(KCl deactivation)
• Acetylene elutes before C4 hydrocarbons (impurities in butane/isobutane).
• Methyl acetylene (impurity in 1,3-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
Metal MXT® Columns
Rugged, flexible, Siltek® treated stainless steel
tubing; inertness comparable to fused silica
tubing. See
page 108
for our MXT®-Alumina
BOND/Na
2
SO
4
columns.
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
