Defu Yin

1 Introduction Propylene oxide (PO) is a crucial intermediate in the synthesis of chemicals such as polyether polyols and propylene glycol, with widespread applications across the chemical, pharmaceutical, and materials industries [1-5]. In 2022, global demand for PO reached 11.9 million tons and is expected to grow at an annual rate of 5.63% through 2032 [6].

1. Introduction Click to copy section linkSection link copied! Propene oxide (PO) serves as a crucial chemical precursor extensively employed in the synthesis of poly(ether polyols), pesticide emulsifiers, nonionic surfactants, wetting agents, and flame retardants. (1−3) Traditional methods for producing PO include the chlorohydrin method and the co-oxidation method.

As we all know, hydrogen peroxide (H2O2) is one of the most important industrial chemicals in the world, as a widely used and diversified green oxidant [1], H2O2 is more environmentally friendly than other oxidants because its by-products are only water and oxygen [2], widely used in various sterilization and environmental remediation [3].