Synthesis and modification of deuterated methanol catalyst used in CO-CO2 system
As an important chemical raw material and deuterated intermediate,deuterated methanol(CD3OD)has been widely used in nuclear magnetic resonance reagents,deuterated drug intermediates and photoelectric material modification,but its catalytic synthesis efficiency in CO-CO2 system is still not sufficiently high.In this study,rare earth elements were doped into CuO/ZnO/Al2O3(CZA)catalyst by impregnation method.The catalytic performance of CZA catalysts in CO-CO2 system with D2 was tested and the catalysts were characterized.The results showed that the rare earth elements were uniformly dispersed in the CZA catalyst.The incorporation of La and Ce could effectively increase the specific surface area and pore volume of the catalyst and the amount of CuO on the surface of the catalyst as well.But the activity of the catalyst was reduced with the incorporation of Pr.CZA-3%La catalyst had the largest specific surface area of 46.69m2/g and the largest pore volume of 0.26cm3/g,therefore,giving the best catalytic activity with a deuterated methanol space-time yield of 7.96%,higher than that of CZA catalyst.The CZA catalyst doped with rare earth elements was of great significance to improve the deuterated methanol synthesis efficiency in CO-CO2 system.
catalystsynthesisactivitydeuterated methanolrare earth element modification
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