National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
National Center for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China.
Solid State Nucl Magn Reson. 2016 Nov;80:1-6. doi: 10.1016/j.ssnmr.2016.10.003. Epub 2016 Oct 6.
The carbonylation of methanol with carbon monoxide to generate methyl acetate over Cu-H-MOR and H-MOR zeolites is studied using solid-state NMR spectroscopy. It is found that the catalytic activity of Cu-H-MOR zeolite is much higher than that of H-MOR zeolite. The presence of Cu species enables the stabilization of dimethyl ether, which efficiently suppresses the hydrocarbon formation during carbonylation process over Cu-H-MOR zeolite. In addition, the carbon monoxide adsorbed on Cu site is not an active species to produce either methyl acetate or acetic acid.
采用固态 NMR 光谱法研究了在 Cu-H-MOR 和 H-MOR 沸石上用一氧化碳将甲醇羰基化为乙酸甲酯的反应。结果表明，Cu-H-MOR 沸石的催化活性远高于 H-MOR 沸石。Cu 物种的存在能够稳定二甲醚，这有效地抑制了 Cu-H-MOR 沸石上羰基化过程中烃类的生成。此外，吸附在 Cu 位上的一氧化碳不是生成乙酸甲酯或乙酸的活性物种。
