Effects of Ti4+ doping on residual Na contents and catalytic properties of MgAl-LDH-derived MMOs in cycloaddition of CO2 to styrene oxide

Residual Na originated from precipitants is the most overlooked component in LDH-derived mixed metal hydroxides (MMOs). This work attempts to investigate and regulate the residual Na content in MMOs by doping of LDH so as to improve acidic/basic catalytic performance of MMOs. It was found that Ti4+ doping could effectively increase the residual Na content from 1.3% to 2.3% and the total number of basic sites (up to twice), especially those with medium and high strength, and thus enhanced the catalytic performance of MMOs in cycloaddition of CO2 to styrene oxide activated by both acidic and basic sites.

Automated summary

The study investigated the regulation of residual Na content in MMOs through LDH doping, focusing on the enhancement of catalytic performance in cycloaddition reactions.