Layered double hydroxides based on different cations as catalysts for synthesis of poly(1, 5-pentadiol) carbonate diols

Abstract

607-612Layered double hydroxides (LDHs) based on different metal cations have been prepared by co-precipitation method and characterized with X-ray diffraction and Fourier transform infrared spectroscopy. The sample LDHs have been used as catalysts for transesterification between diphenyl carbonate (DPC) and 1, 5-pentadiol (1, 5-PD) to poly(1,5-pentadiol) carbonate diols. The results show that Zn-Al-CO3 LDH and Mg-Al-CO3 LDH are the most effective catalysts for the transesterification between DPC and 1,5-PD. Taking Zn-Al-CO3 LDH as an example, the effect of the layered structure of LDHs on the transesterification has been investigated. The results show that the stability of layered structure is an important factor that influences the catalytic activity of LDHs