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今年三月底,日本东京大学教授田丸谦二博士应邀来沪作“固体催化反应机构”的学术报告。介绍近代多相催化研究发展概况,以及近代物理和化学方法在催化研究中的应用。着重介绍化学吸附、同位素、红外吸收光谱和俄歇能谱的应用,并以二个实验情况加以介绍:(1)钨表面上的氨分解反应机构的研究。氨在钨表面上于150℃就可分解得H_2。在250℃时吸附的氨分解而脱出H_2,但是N_2不能被介脱。当温度提高到600℃时,钨表面就没有氨分子吸附。实验结果认为氮气在催化剂上的化学吸附就成为反应的控制步骤。同时采用同
By the end of March this year, Dr. Tian Tianqian, a professor at the University of Tokyo in Japan, was invited to come to Shanghai for his academic report on “Solid Catalytic Reaction Institutions.” This paper introduces the development of modern heterogeneous catalysis and the application of modern physical and chemical methods in catalysis. The application of chemisorption, isotope, infrared absorption spectroscopy and Auger spectroscopy are emphatically introduced. Two experimental conditions are introduced: (1) Ammonia decomposition reaction mechanism on tungsten surface. Ammonia decomposes to H_2 at 150 ° C on the tungsten surface. The ammonia adsorbed at 250 ° C decomposes and exits H 2, but N 2 can not be desorbed. When the temperature is raised to 600 ° C, there is no adsorption of ammonia molecules on the tungsten surface. The experimental results show that the chemisorption of nitrogen on the catalyst becomes the control step of the reaction. At the same time using the same