Acid catalysis

In acid-catalyzed Fischer esterification, the proton binds to oxygens and functions as a Lewis acid to activate the ester carbonyl (top row) as an electrophile, and converts the hydroxyl into the good leaving group water (bottom left). Both lower the kinetic barrier and speed up the attainment of chemical equilibrium.

Zeolite, ZSM-5 is widely used as a solid acid catalyst.

In acid catalysis and base catalysis a chemical reaction is catalyzed by an acid or a base. The acid is the proton donor and the base is the proton acceptor. Typical reactions catalyzed by proton transfer are esterfications and aldol reactions. In these reactions the conjugate acid of the carbonyl group is a better electrophile than the neutral carbonyl group itself. Catalysis by either acid or base can occur in two different ways: specific catalysis and general catalysis.

单词	Solid acid catalyst
释义	Solid acid catalyst 英语例句库 Soybean isoflavone glucoside can be hydrolyzed into isoflavone aglucone with methanol-water in a fixed bed filled with solid acid catalyst. 以固体酸为催化剂,在固定床中将糖苷型大豆异黄酮水解成大豆异黄酮苷元。英语百科 Acid catalysis In acid catalysis and base catalysis a chemical reaction is catalyzed by an acid or a base. The acid is the proton donor and the base is the proton acceptor. Typical reactions catalyzed by proton transfer are esterfications and aldol reactions. In these reactions the conjugate acid of the carbonyl group is a better electrophile than the neutral carbonyl group itself. Catalysis by either acid or base can occur in two different ways: specific catalysis and general catalysis.
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Solid acid catalyst

Acid catalysis