Table 4 Representative analyses of quenched reduced C-O-H-N fluids (rel.%) obtained in runs at 6.3 GPa and 1100–1400 °C.

From: Carbon and Nitrogen Speciation in N-poor C-O-H-N Fluids at 6.3 GPa and 1100–1400 °C

Run#

1761_2_3**

1751_2_3

1780_2_2

1727_2_2

889_7_1

Capsule

Pt

Au

Pt

Pt

Pt

Temperature (°C)

1100

1200

1300

1400

1400

Duration (hr)

0.017

7

7

7

7

Starting composition: Docosane*

 

Water

10.4

9.5

4.2

11

0.7

Alkanes

CH4

10.0

49.7

26.9

22.3

51.0

C2H6

73.8

31.1

36.5

33.9

38.5

C3H8

5.2

8.1

23.9

4.9

8.7

C4H10

0.2

1.1

5.7

3.5

0.6

C5H12

0.01

0.05

0.2

1.5

0.001

C6-C15

≤0.002

≤0.6

≤0.01

C15-C19 ***

≤0.004

≤0.4

≤0.2

≤0.01

Olefins

≤0.001

 

Arenes

≤0.001

≤0.6

Alcohols and ethers

≤0.006

≤0.05

≤0.1

≤0.06

≤0.2

Aldehydes

≤0.3

≤0.001

Ketones

≤0.6

≤0.002

Carboxylic acid

≤0.002

≤0.2

Furans

≤0.001

Nitrogen species

 N2

0.01

0.02

0.1

0.3

0.02

 CH3N

>1

>1

>1

0.7

0.05

  1. *All samples contained graphite; **Data given for comparison. ***The quoted concentrations are maximum for a species of the respective group. All GC-MS data are given in Supplementary Table 1.