Propylene oxide (PO) is an important organic building block in industry and is used to manufacture polyether polyols, unsaturated resins, nonionic surfactants and carbonates.1,2,3
Propylene oxide (PO) is an important organic building block in industry and is used to manufacture polyether polyols, unsaturated resins, nonionic surfactants and carbonates.1,2,3 In 2020, the global PO market was more than 10 MMt—China's consumption was estimated at 3.5 MMt. However, more than 50% of PO in China is still prepared by the classic chlorohydrin method, which produces serious environmental pollution (with wastewater and waste residues of 40 t/t–80 t/t PO and 2 t /t PO, respectively) and equipment corrosion problems due to the use of hazard chlorine (Cl2) and solid base as raw materials.4,5,6
Although co-oxidation processes (including PO/SM, PO/TBA and PO/CHP processes) eliminat
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