Both reactions use oxygen, light-emitting diodes (LEDs), and readily available catalysts to generate benzoic acid—which can be worth about twice as much as polystyrene by weight, according to ...

Benzoic acid, the simplest benzene-based carboxylic acid, has been known since the 16th century. One of its discoverers was the legendary clairvoyant Nostradamus. Its most common natural source is gum ...