Patent ID: 9598525
Date: 2017-03-21
CPC Classifications: C01B,C08G,C08J

Claim:
1. A method for making a wet gel, comprising: combining a hydroxybenzene compound, an aldehyde compound, and an additive to produce a reaction mixture, wherein the additive comprises a carboxylic acid and an anhydride; and reacting at least the hydroxybenzene compound and the aldehyde compound to produce a wet gel, wherein the reaction mixture comprises about 10 wt % to about 65 wt % of the hydroxybenzene compound, about 5 wt % to about 25 wt % of the aldehyde compound, about 0.1 wt % to about 85 wt % of the carboxylic acid, and about 0.1 wt % to about 40 wt % of the anhydride, wherein the reaction mixture comprises about 10 wt % to about 90 wt % of the additive, and wherein all weight percent values are based on the combined weight of the hydroxybenzene compound, the aldehyde compound, and the additive; and drying the wet gel to produce a dried gel, wherein the dried gel has at least one property selected from the group consisting of: an average pore size of about 10 nm to about 150 nm, a specific surface area of about 5 m a pore volume of about 0.2 cm