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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 144

for 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