Preparation of Shaped Binder‐Free SSZ‐13 Zeolite and Its Application in CO2 Adsorption and Catalysis

SSZ-13, small-pore zeolite with chabazite (CHA) topology, exhibits outstanding performance in gas adsorption-separation and catalysis. However, most of the studies on SSZ-13 zeolite are limited to the powder form. In practical application, the SSZ-13 zeolite should be shaped with a certain amount of inert binder into technical form resulting in reduced performance. Herein, shaped binder-free SSZ-13 zeolite was prepared by treating the extruded SSZ-13/SiO2 sample with amantadine solution under hydrothermal conditions, to crystallize the SiO2 binder into the zeolite phase. The characterization and DFT calculation results point out that the recrystallization of SiO2 binder in shaped SSZ-13 into zeolite crystal could improve the physical and chemical properties. Enhanced CO2 adsorption capacity and catalysis performance in CO2-assisted oxidative dehydrogenation of ethane and propane were also found on the shaped binder-free SSZ-13 zeolite.