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139
Figure 2:
OPN on Res-Sil® C packing demonstrates unique
selectivity for
cis
-2-butene and 1,3-butadiene.
GC COLUMNS |
PACKED/MICROPACKED COLUMNS
Application-Specific Packed/Micropacked Columns
Figure 3:
Refinery gas calibration standard on refinery gas
packed column set.
Figure 1:
n
-Octane on Res-Sil® C packing demonstrates
unique selectivity for unsaturated light hydrocarbons.
Special Columns for Unsaturated Light Hydrocarbons
• Faster separations of C1 to C4 hydrocarbons.
• Res-Sil® packing replaces Porasil materials.
n
-Octane on Res-Sil® C Packed Column
This packed column has unique selectivity for resolving
unsaturated light hydrocarbons (Figure 1).
OPN on Res-Sil® C Packed Column
This column separates the light hydrocarbons, and baseline
resolves
cis
-2-butene from 1,3-butadiene (Figure 2).
2abc Refinery Gas Column Set
This three-column set is finely tuned to resolve light hydrocar-
bons. When used in the proper valving system, it will elute C5+
hydrocarbons ahead of C1 through C4 hydrocarbons (Figure 3).
*Please add column instrument configuration suffix number to cat.# when ordering.
See chart on
page 141.
**This column set is for a valving system; therefore, packing material is filled to ends
of columns.
***To be used with 2abc refinery gas column set (cat.# 88000-) to backflush and
prevent C6+ hydrocarbons from entering column set.
Description
cat.#*
price
n
-Octane on Res-Sil C, 80/100 (20', 2.0 mm ID,
1
/
8
" Silcosmooth OD)
80436-
OPN on Res-Sil C, 80/100 (12', 2.0 mm ID,
1
/
8
" Silcosmooth OD)
80437-
2abc Refinery Gas Column Set (3 column set)**
88000-
2.1% Carbowax 1540 Porasil C (backflush column)***
88004-875
for more info
See
page 144for more information on Res-Sil® packing materials.
Light Hydrocarbon Analysis
GC_PC00372
Column
n
-octane, SilcoSmooth® tubing,
80/100 mesh on Res-Sil® C,
20 ft,
1
/
8
in. OD, 2 mm ID
(cat.# 80436-800)
Sample
Refinery gas C1-C5
Injection
Inj. Vol.:
20 µL packed not on-column
Inj. Temp.:
150 °C
Oven
Oven Temp.:
60 °C
Carrier Gas
He, constant flow
Flow Rate:
30 mL/min
Detector
FID@ 150 °C
Peaks
1. Methane
2. Ethane
3. Ethylene
4. Acetylene
5. Propane
6. Propylene
7. Isobutane
8.
n
-Butane
9. 1-Butene
10. Pentane
11. Isobutylene
12. 1,3-Butadiene
13. 1-Pentene
14.
trans
-2-Pentene
15.
cis
-2-Pentene
16. 2-methylbutene-2
GC_PC00373
Column
OPN, SilcoSmooth® Tubing,
80/100 mesh on Res-Sil® C
packing, 12 ft,
1
/
8
in. OD, 2 mm
ID (cat.# 80437-800)
Sample
Refinery gas
Conc.:
0.1-6 absolute mole %
Injection
Inj. Vol.:
20 µL packed on-column
Inj. Temp.:
200 °C
Oven
Oven Temp.:
50 °C
Carrier Gas
He, constant flow
Flow Rate:
30 mL/min
Detector
FID@ 200 °C
Acknowledgement
Standard courtesy of AC
Analytical Controls
Peaks
Retention Indices
1. Methane
100
2. Ethane/ethylene
200
3. Acetylene
260
4. Propane
300
5. Propylene
321
6. Propadiene
345
7. Isobutane
386
8. Butane
400
9. 1-Butene
422
10. Isobutylene/
trans
-2-butene 434
11.
cis
-2-Butene
443
12. 1,3-Butadiene
454
13. Isopentane
488
14. Pentane/3-methyl-1-butene 503
15. 1-Pentene
522
16.
trans
-2-Pentene
533
17.
cis
-2-Pentene
540
18. 2-Methyl-2-butene
549
GC_PC00374
Column
Refinery gas column set
(3 columns): 2a 2b 2c ,
Silcosteel® tubing (cat.#
88000-875)
Sample
Refinery gas
Injection
Inj. Vol.:
1,000 µL packed on-column
Inj. Temp.:
150 °C
Oven
Oven Temp.: 60 °C
Carrier Gas
He, constant flow
Flow Rate:
30 mL/min
Detector
FID@ 150 °C
Peaks
1. C5-C6+
2. Methane
3. Ethane
4. Ethylene
5. Propane
6. Acetylene
7. Propylene
8. Cyclopropane
9. Isobutane
10. Propadiene
11.
n
-Butane
12. 1-Butene
13. Isobutene
14.
trans
-2-Butene
15.
cis
-2-Butene
16. 1,3-Butadiene
17. Isopentane
18.
n
-Pentane