Hydrophobic aerogel materials

27) An aerogel composition comprising a silica-based framework;

• wherein the aerogel composition has the following properties:
• a) density of 0.60 g/cm3 or less;
• b) thermal conductivity of 50 mW/M*K or less;
• c) liquid water uptake of 40 wt % or less;
• d) heat of combustion of less than 717 cal/g;
• and
• e) onset of thermal decomposition of hydrophobic organic materials of 300° C. or higher.

46) An aerogel composition comprising a silica-based framework;

• wherein the aerogel composition has the following properties:
• a) liquid water uptake of 40 wt % or less;
• and
• b) heat of combustion of less than 717 cal/g.

52) An aerogel composition comprising a silica-based framework;

• wherein the aerogel composition has the following properties:
• a) liquid water uptake of 40 wt % or less;
• and
• b) onset of thermal decomposition of hydrophobic organic materials of 300° C. or higher.