u03b4w wo by aerogelsaerogel 1121c 1121l 1214h sub 2 o vapor no yes no yes no yes______________________________________co2 na 17 42 0 714 3 270 na 3 80so2 na 24 60 10 94 57 23 11 1 104 85______________________________________ u03b4w net weight change due to gas adsorption only wo initial aerogel sample weight after evacuation the results of the gas adsorption tests for three aerogel specimens and two gases co 2 so 2 are shown on tables 3 8 table 3______________________________________adsorption results of so sub 2 by aerogel 1121ctime u03b4w u03b4w wo min g remarks______________________________________ 3 4 05 18 08 initial sample weight 22 4 g 6 5 80 25 89 initial temperature 25 u00b0 c 10 6 55 29 24 water vapor adsorbed 7 75 g i e 34 44 15 6 90 30 80 temperature increases to about 80 u00b0 c after water25 7 55 33 71 introduction40 7 75 34 60______________________________________ table 4______________________________________adsorption results of co sub 2 by aerogel 1121ctime u03b4w u03b4w wo min g remarks______________________________________ 3 2 20 9 95 initial sample weight 22 1 g 6 2 95 13 35 initial temperature 25 u00b0 c 10 3 65 16 52 water vapor adsorbed 10 95 g i e 49 55 15 3 75 16 87 temperature increases to about 70 u00b0 c after.