Methane → 4-Sulfobenzenediazonium hydroxide

Participants

Reaction Steps

Sulfanilic acid (43 g) was dissolved in 2 L of water with warming. The solution was mixed with 200 g of a carbon black having a surface area of 230 m2 /g and a DBPA of 70 ml/100 g and allowed to cool. An aqueous solution of 20.5 g NaNO2 was added slowly and the resulting dispersion was stirred for one hour. 4-Sulfobenzenediazonium hydroxide inner salt was formed in situ, which reacted with the carbon black. The dispersion was filtered through a Whatman #41 filter, and the product was dried in an oven at 70° C. The product has attached p--C6H4SO3- groups.

Provenance & Evidence