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Methanol is an extremely important chemical raw material as potential car fuel and fuel cell , fuel . Therefore, the research and exploration of the synthesis of methanol , has been in the international attention . From synthesis gas for methanol synthesis process have long been industrialized , but there are still the raw syngas one-way conversion rate is low and other issues , therefore , the development of new and efficient catalyst for methanol synthesis has been the pursuit of the goal of scholars . Commonly used in methanol synthesis CuO / ZnO / Al 2 < / sub > O 3 < / sub > catalyst , the first investigated the catalytic performance of different metal group assignment , results show that the Cu / Zn / Al molar ratio of the catalyst for methanol synthesis 4.5/4.5/1 optimal performance . And then proceed from the basic catalyst preparation conditions , the catalyst calcination temperature , reduction of heating rate investigated , combined with TPR , TPD and XRD characterization results , more systematic study of the catalyst preparation conditions on the structure of the catalyst and the feed gas adsorption - desorption properties of impact , when the calcination temperature is not higher than 400 ° C , the catalyst having a higher space-time yield of methanol , the catalyst grain size increases with the calcination temperature , specific surface area decreases , the catalyst is more difficult to restore . catalyst reduces the raw gas hydrogen and CO adsorption capacity , the calcination temperature is too high , are easy to restore the heating rate is too fast to cause catalyst particle coalescence , resulting in the decline in the activity of the catalyst is not conducive to the methanol generated . A plasma technology Preparation of CuO / ZnO / Al 2 < / sub > O 3 < / sub > Catalysts comparison, the plasma can significantly improve the activity of the catalyst , the catalyst prepared by the conventional method , combined with TPR , TPD , XRD and BET characterization results indicate that plasma technology and the preparation of the catalyst specific surface area increases, the smaller crystal grain size of the metallic copper , the active ingredient dispersity increase , increase in the number of active centers , plasma prepared catalysts Dissociation of the raw material hydrogen adsorption capacity , a significant increase in the yield of methanol . Several plasma treatment atmosphere in a hydrogen atmosphere after the first nitrogen obtained methanol synthesis catalyst having the best performance .
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