【摘要】 采用热重-质谱联用法、扫描电镜形貌观察、物相分析、孔径及比表面积分析、热重和静态吸附分析等方法,对4A分子筛从微观结构到宏观性能进行了系统地表征,为全面掌握4A分子筛的性能特点、合理设置其使用条件提供了重要的数据参考。还讨论了相应的分析方法在分子筛性能表征中的应用,也为其他类型的分子筛表征提供了可行的试验方法。更多还原

【Abstract】 Analytical methods such as thermogravimetry-mass spectrum united technique,SEM morphology observation,phase analysis,pore size and specific surface area analysis,thermogravimetric analysis and static adsorption analysis were utilized to characterize 4A molecular sieve systematically,from which the properties from micro to macro were gained.Through the research,not only the comprehensive parameters of 4A molecular sieve were obtained,but also the important reference to reasonably set the service condition of 4A molecular sieve were introduced.In addition,the application of each characterization method was discussed,which could offer feasible ways to study other kinds of molecular sieves.更多还原