Preparation and catalytic CO2 performance of ZnGaMnOx/SAPO-34
ZnGaMnOx With different Zn/Ga/Mn molar ratios were prepared by the sol-gel method,and SAPO-34 nanocrystals with a size of about 250 nm and good dispersion were synthesized by the seed-assis-ted method.The ZnGaMnOx/SAPO-34 bifunctional catalysts were physically milled to form ZnGaMnOx/SAPO-34,and their CO2 hydrogenation performance was investigated.The effects of the oxide preparation method and the molar ratio of the three elements Zn/Ga/Mn on the catalytic performance of ZnGaMnOx/SAPO-34 were investigated.The result showed that when Zn/Ga/Mn = 5∶14∶6,the CO2 conversion of ZnGaMnOx/SAPO-34 was 17.1%,the CO selectivity was 67.7%and the lower olefin selectivity was 66.2%.
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