Kinetics and mechanism of the catalytic hydration of propylene oxide

Kinetic study of the hydration of propylene oxide in the presence of heterogeneous catalyst

“…The selectivity of PG obtained at W/PO mole ratios of 1.9/1 and 11.8/1 is about 78 and 96%, respectively, while keeping the catalyst loading of 0.13 mol of HCO 3 -/L in equivalent at temperature of 358 K. The kinetics of hydration of propylene oxide was also studied in the literature in the presence of bis(ethane--1,2-diol) molybdate. It is reported that the selectivity of PG in the presence of molybdenum glycolates is about 97-99% at W/PO mole ratio of 34/1 and 128/1 [13]. Although this result seems to be better than that of present study, that is an expected result since the PG selectivity increases by increasing W/PO mole ratio.…”

“…Shaikhutdinov et al reported the kinetics of propylene oxide hydration in the presence of bis(ethane-1,2-diol)molybdate. They suggested a mathematical description of PO disappearance and PG formation [13]. Kozlovsky et al studied the kinetics of hydration of ethylene and propylene oxides in concentrated aqueous solutions and proposed the first-order kinetics of ethylene or propylene oxide consumption.…”

Development of an Integrated Process Plant for the Conversion of Shale Gas to Propylene Glycol

“…In this process, it is possible to produce DPG and TPG as byproducts. 2,27 In this study, only a trace amount of TPG was observed and was ignored further purification steps. The composition and temperature profiles along the reactor length are shown in Figure 8.…”

“…The PG synthesis process is carried out by the hydration of PO, which is a noncatalytic process. The hydration of PO proceeds in a three-step series–parallel uncatalyzed reactions , …”