Catalyst

Time on stream (min)

Selectivity of by-product (%)

CO

CO₂

CH₄

C₂H₄

C₃H₆

i-C₄H₈^a

Cat A

20

0.2

0.6

9.0

6.0

6.2

0.3

360

0

0.2

6.2

4.4

4.8

0

Cat B

20

0.4

0.5

2.0

4.6

2.5

0.3

360

0.2

0.2

1.1

3.2

2.1

0

Cat C

20

0.2

0.7

2.3

5.0

3.1

0.6

360

0.2

0.3

1.5

3.4

2.9

0.2

Cat D

20

0.2

0.8

2.5

5.2

3.3

1.4

360

0.2

0.3

1.5

3.5

3.0

0.3