CO催化氧化实验教学设计
Experimental teaching design of CO catalytic oxidation
摘要
科教融合是培养拔尖创新人才、实现人才强国的重要途径.以机动车尾气污染物CO净化处理为研究主题,结合CO催化氧化技术及研究成果,进行了 Pt/CeO2-ZrO2和Pt/Al2O3催化氧化CO的综合实验设计.实验结果表明:Pt/CeO2-ZrO2遵循M-vK反应机理,即催化剂可自身释放活性晶格氧物种以快速氧化吸附的CO;相反,Pt/Al2O3自身不能释放晶格氧,CO氧化遵循L-H机理.因而,Pt/CeO2-ZrO2表现出较Pt/Al2O3更优异的CO氧化活性.该实验将研究热点与教学实践环节相结合,集负载型催化剂制备和活性评价为一体,并利用原位漫反射红外光谱探究了不同催化剂上的催化机理,利于学生从分子层次理解催化过程和催化剂的关键作用,有助于培养学生的综合实验技能和科研创新能力.
Integration of science and education is an important way to cultivate top-notch innovative talents and achieve the goal of building a strong talent country.Taking CO purification from vehicle ex-haust as the research theme,combined with the theory and previous results of CO catalytic oxidation technology,the comprehensive experiments of CO catalytic oxidation over Pt/CeO2-ZrO2 and Pt/Al2O3 catalyst was designed.The experimental results indicate that Pt/CeO2-ZrO2 follows the M-vK reaction mechanism since the catalyst can release active lattice oxygen species to rapidly oxidize ad-sorbed CO;On the contrary,Pt/Al2O3 follows the L-H mechanism due to it can't release lattice ox-ygen.As a result,Pt/CeO2-ZrO2 exhibits superior activity than Pt/Al2O3.This experiment combines technical research hotspots with teaching practice,which integrates the preparation and activity evalua-tion of supported catalysts.Moreover,the in-situ diffuse reflectance infrared spectroscopy has also been used to explore the catalytic mechanisms on different catalysts,which is beneficial for students to understand the catalytic process at the molecular level,the critical roles of catalysts and cultivate their comprehensive experimental skills and scientific research abilities.
年，卷(期)：
2026, 29(4)
分类号：
G482
机标分类号：
G642.0
G40-057
O643
在线出版日期：
2026年9月24日
基金项目：
SCU9131:四川大学新世纪教育教学改革工程项目，
