Table 1: CO2 uptake during the gas hydrate formation process and corresponding hydrate number.

Sample Rw Uptake Molar ratio of water to gas
Total uptakeAdsorptive amount

C1021.121.1--0---
C20.9627.921.11.385.457.837.807.857.65
C32.0135.621.18.726.0514.777.647.237.79
C42.3938.821.112.505.2317.437.487.967.29
A1037.134.0000---
A21.5834.634.0000---
A32.2835.034.0------
A43.1056.534.0--22.507.65--

, , and correspond to the uptake that resulted from the gas hydrate formation in the first step, second step, and sum of the two steps, respectively. , , and are the gas hydrate numbers corresponding to the formed gas hydrate in the first step, second step, and sum of the two steps, respectively.