1) Two-step synthesis
两步晶化法
1.
Composite micro/mesoporous MCM-48/ZSM-5 materials were successfully prepared by using a two-step synthesis route.
利用两步晶化法制备了高水热稳定性的MCM-48/ZSM-5介微孔复合分子筛。
2) Two-step crystallization
两步晶化
1.
Mesoporous materials with the primary structure units of zeolite in the pore wall have been synthesized by a two-step crystallization process at 140 ℃ and characterized by XRD, N 2 physical adsorption/desorption, TEM, IR and NH 3-TPD methods.
采用两步晶化法合成了孔壁含沸石初级结构单元的六方介孔材料 ,用XRD ,N2 吸附 -脱附 ,TEM ,IR和NH3 TPD对样品进行了表征 ,考察了晶化时间、碱度、温度和NH+ 4离子交换对样品的影响 。
2.
The composite molecular sieves Beta/MCM-41 with different ratios of SiO2/Al2O3 were hydrothermally synthesized by two-step crystallization with tetraethylammonium hydroxide and cetyltrimethylammoniumbromide as templates.
分别以四乙基氢氧化铵和十六烷基三甲基溴化铵作为微孔相和介孔相的模板,采用两步晶化法制备了4种具有不同硅铝比,含微孔和介孔双模孔结构的Beta/MCM-41复合分子筛。
3) two-step oxidation
两步氧化法
1.
Nano ZnO preparation by two-step oxidation method and its gas-sensing properties;
两步氧化法制备纳米ZnO及其气敏性能研究
4) two-step ammoniation method
两步氨化法
1.
Technology for production of sulfur-based compound fertilizer by two-step ammoniation method;
两步氨化法生产硫基复合肥技术
5) twice activated method
两步活化法
6) two step carbonization
两步碳化法
1.
This paper summarized the synthetic methods of various shapes of nano calcium carbonate particles, such as chain like vaterite, spindle, cubic CaCO 3 in details, and reviewed the main manufacture technologies including multilevel spray carbonization, one step carbonization, two step carbonization and novel rotating packed bed reactor carbonization.
对一步碳化法、两步碳化法、多段喷雾碳化法、旋转填充床碳化反应器碳化技术制备链形、纺锤形、球形、立方形等不同形状的纳米碳酸钙材料的方法进行了比较和总
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