A simple approach to the preparation of HPWO/Cu(BTC) (BTC = 1,3,5-benzenetricarboxylate) and its catalytic performance in the synthesis of acetals/ketals.

HPWO/Cu(BTC) (BTC = 1,3,5-benzenetricarboxylate) as a new catalyst was prepared by the impregnation method and used to synthesize cyclohexanone ethylene ketal as a probe reaction, which has shown its favorable catalytic activity. FT-IR, XRD, SEM, N adsorption-desorption isotherms and TG/DTA were used to characterize its composition, structure, morphology, stability and toleration for thermal in order to further prepare the catalyst with effective performance. Moreover, we have also explored the optimized conditions of carrying out the probe reaction by orthogonal experiments. The optimized conditions were as follows: fixing cyclohexanone consumption was 0.02 mol, n(cyclohexanone): n(ethylene glycol) = 1:1.3, the mass ratio of the catalyst to total reactant was 0.2 %, cyclohexane dosage was 4 mL, and the reaction time was 75 min. The yield of the acetals and ketones could reach 54.9 ~ 83.5 % under the optimum conditions. In addition, HPWO/Cu(BTC) exhibited good reusability and the approaches above may enable rational design of advanced and environmental-friendly MOF-based catalysts. [ABSTRACT FROM AUTHOR]