摘要：为了进一步改善催化剂在甲醇水蒸气重整制氢方面的催化作用，实验通过选择不同构成比和不同沉淀方法制备了许多有关联但是不同的Cu/ZrO2。实验中使用了包括N2吸附，N2O化学吸附，TEM，TPD和拉曼在内的各种表征技术来表征催化剂的物理化学性质。由最终实验成果呈现出，制备方法对Cu/ZrO2的组分分散，微观构造和吸附能力有十分重要作用。当温度处于比较低的情况下，具有较高的比表面积和组分分散的Cu/ZrO2会使CH3OH的转化能力得到显著提高。通过使用沉积沉淀法得到ZrO2载量为27。3％的Cu/ZrO2，与通过使用传统的共沉淀方法得到的Cu/ZrO2相比较，它显示出更高的铜与二氧化锆之间的界面面积和更高的比表面积，这不仅加快了甲醇的吸附和水的分解速率，并且促进了表面氧的数目和亚铜离子的形成，因此可以提升Cu/ZrO2在反应中持续稳定性和催化性能。80537

毕业论文关键词：Cu/ZrO2催化剂；甲醇水蒸气；制氢

Preparation of Cu/ZrO2 Catalyst for Steam Reforming of Methanol SteamStudy on Catalytic Performance

Abstract：In order to further improve the catalytic effect of the catalyst on the hydrogen production of methanol steam reforming, many different but different Cu/ZrO2 catalysts were prepared by selecting different composition ratios and different precipitation methods。 In the experiment, various characterization techniques including N2 adsorption, N2O chemical adsorption, TEM, TPD and Raman were used to characterize the physicochemical properties of the catalyst。 The results show that the preparation method has a very important effect on the dispersion, microstructure and adsorption capacity of Cu/ZrO2。 When the temperature is relatively low, Cu/ZrO2 with higher specific surface area and component dispersion will significantly improve the conversion ability of CH3OH。 Cu/ZrO2 with ZrO2 loading of 27。3% was obtained by using precipitation precipitation method。 Compared with Cu/ZrO2 obtained by using conventional coprecipitation method, it shows a higher interface area between copper and zirconia and higher specific surface area, which not only speeds up the adsorption of methanol and the rate of decomposition of water, but also promotes the formation of surface oxygen and the formation of cuprous ions。 So Cu/ZrO2 can be promoted in the reaction of continuous stability and catalytic performance。

KeyWords: Cu / ZrO2 catalyst; methanol vapor; hydrogen production

目录

1 绪论 1

1。1 氢气的来源及性质 1

1。2 甲醇水蒸气重整制氢的研究进展 1

1。2。1 甲醇制备氢气 1

1。2。2 反应机理研究 1

1。2。3 甲醇水蒸气重整制氢反应的热力学研究 1

1。2。4 甲醇水蒸气重整制氢催化剂研究 2

1。3 Cu/ZrO2催化剂制备方法 2

1。3。1 共沉淀法 2

1。3。2 浸渍法 3

1。3。3 沉积沉淀法 3

1。3。4 溶胶-凝胶法 3

1。3。5 微乳液法 3

1。4 选题意义及实验方案 4

2 实验 5

2。1 实验仪器与试剂 5

2。2 催化剂制备 6

2。2。1 共沉淀法