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پروپیلن اکسید
Enichem has developed a large scale propylene oxide (2, PO) manufacture with this catalyst.
The reaction is performed in a 30 % aqueous H2O2 solution/methanol mixture, with water as the only observed byproduct (97 % yield for the synthesis of propylene oxide) and replaces the chlorohydrin process, thus avoiding the production of inorganic salts (Scheme 3.3) [23].
Scheme 3.3 Synthesis of propylene oxide 2
Propylene glycol (2, 1,2-PO) is another building block with an annual global demand exceeding the 1 million tons.
The most important industrial production of racemic 1,2-PDO is based on the hydration of propylene oxide (which in turn arises from propylene, see below, Scheme 4.3), whereas a biobased pathway involving glycerol as starting material is also employed, though to a lesser extent.
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