The catalytic activity of benzaldehyde 1,2-propylene acetal was investigated from benzaldehyde and 1,2-propylene glycol in the presence of potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O). The effects of the cyclohexanone/1,2-propylene glycol molar ratio, the amount of the catalyst, cyclohexane dosage, the reaction time and the using regenerated catalyst on yield were studied systematically. The results show that potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O) is an excellent catalyst for the above reaction. The preferable experimental conditions are as follows: benzaldehyde/1,2-propylene glycol molar ratio is 1∶1.2, benzaldehyde is 0.1 mol, potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O) is 0.3 g, the volume of cyclohexane is 10 mL, and reaction time is 45 min. Under the above experimental conditions, the maximum yield of benzaldehyde 1,2-propylene acetal is up to 92.8%.

The catalytic activity of potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O) on the reaction between cyclohexanone and 1,2-propylene ketal. The effects of the cyclohexanone/1,2-propylene alcohol molar ratio, the amount of the catalyst agent and water-carrying agent, the reaction time, the using regenerated catalyst on the yield of Cyclohexanone1,2-propylene ketal were systematically investigated. The results show that potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O) is a good water-carrying agent for the reaction between cyclohexanone and 1,2-propylene ketal. The results showed that the suitable condition for the reaction are as follows: benzaldehyde/1,2-propylene molar ratio is 1∶1.4, the amount of potassium dodecatungstocobaltate trihydrate (K ₅CoW ₁₂O ₄₀·3H ₂O) is 0.5 g, the volume of cyclohexane is 9 mL, and reaction time is 70 min. The maximum yield of benzaldehyde 1,2-propylene ketal is up to 94.2%.