Study on Novel Pd-impregnated Catalyst for Synthesis of 2-Arylpropanoic Acids by Hydrocarboxylation

Abstract

In the hydrocarboxylation of the Pd-based catalyst, the heterogeneity of homogeneous processes was a reliable means to improve the recyclability of the catalyst and to inhibit the loss of noble metals. Herein, a novel heterogeneous Pd@DT017 catalyst prepared from Pd(II) salt impregnated in the acidic resin of DT017 had been studied, which revealed high performance. Correcting characterization showed that Pd(II) was successfully grafted to -SO3 - on the surface of DT017, and the Pd element was highly dispersed in DT017 with the macroporous structure. The conversion was 99.9%, and the yield of isomeric acid was 91.6% on Pd@DT017. The stability test found that Pd@DT017 had higher cycle stability.