Catalysis Today, Vol.352, 175-182, 2020
Synthesis of Ga-containing CON-type material and its catalytic performance in methanol-to-ole fins reaction
Ga-containing CON-type materials were synthesized and its catalytic performance in methanol-to-olefins (MTO) reaction were evaluated. The state of Ga atoms in the CON framework was investigated by Ga-71 MAS NMR and UV-vis measurements. The effect of incorporation of Ga on the acidic properties of CON-type materials was investigated by NH3-TPD and FT-IR measurements with pyridine and CO as molecular probes. When Ga-containing CON-type zeolite was employed in MTO reaction, the yield to propylene were 60 C-atom %, as high as AlCON, but with the lower ethylene selectivity, leading to the higher propylene-to-ethylene (P/E) ratio.