biostudies-literatureLiao YNatural Science Foundation of Shanxi Province785-791https://www.ebi.ac.uk/biostudies/studies/S-EPMC9076883biostudies-literatureUnknown8(2)The Ca-Al and Ca-Al-X (X = F^-, Cl^- and Br^-) catalysts were prepared <i>via</i> thermal decomposition of Ca-Al layered double hydroxides (LDHs), and tested for methanolysis of propylene carbonate (PC) to produce dimethyl carbonate (DMC). The catalytic performance of these catalysts increased in the order of Ca-Al-Br^- < Ca-Al < Ca-Al-Cl^- < Ca-Al-F^-, which was consistent with the strong basicity of these materials. The recyclability test results showed that the addition of Al and halogens (F^-, Cl^- and Br^-) not only stabilized the CaO but also improved the recyclability of the catalysts. Particularly, the Ca-Al-F^- catalyst exerted the highest stability after 10 recycles. These catalystRSC advancesSolid base catalysts derived from Ca-Al-X (X = F^-, Cl^- and Br^-) layered double hydroxides for methanolysis of propylene carbonate.PMC9076883201601D102006Liao YZhao NLi FPu YWang FXiao FDai XfalseSolid base catalysts derived from Ca-Al-X (X = F^-, Cl^- and Br^-) layered double hydroxides for methanolysis of propylene carbonate.The Ca-Al and Ca-Al-X (X = F^-, Cl^- and Br^-) catalysts were prepared <i>via</i> thermal decomposition of Ca-Al layered double hydroxides (LDHs), and tested for methanolysis of propylene carbonate (PC) to produce dimethyl carbonate (DMC). The catalytic performance of these catalysts increased in the order of Ca-Al-Br^- < Ca-Al < Ca-Al-Cl^- < Ca-Al-F^-, which was consistent with the strong basicity of these materials. The recyclability test results showed that the addition of Al and halogens (F^-, Cl^- and Br^-) not only stabilized the CaO but also improved the recyclability of the catalysts. Particularly, the Ca-Al-F^- catalyst exerted the highest stability after 10 recycles. These catalyst2018-01-01T00:00:00Z2018 Jan2025-04-04T23:16:22.541Z2025-02-19T03:24:50.793ZS-EPMC90768833553898110.1039/c7ra10832j