5埃分子筛色谱填料 是指以五A型分子筛作为核心吸附材料的色谱固定相（填料）。它由人工合成的硅铝酸盐晶体构成，其晶体结构具有规则且均一的孔径。
“5埃” 指的是其有效孔径约为 5 埃（0.5纳米）。这个尺寸是其关键特征，决定了它能选择性吸附或通过哪些分子。
“色谱填料” 意味着它被专门加工（如成型为小球或颗粒，并经过活化处理）和装填到色谱柱中，用于混合物的分离分析。
关键特性与工作原理
择形吸附：这是其*核心的原理。只有分子动力学直径小于5Å的物质才能进入其孔道内部被吸附，而大于此直径的分子则被阻挡在外。这实现了基于分子尺寸和形状的精确分离。
强极性表面：分子筛骨架带有负电荷，孔道内有可交换的阳离子（如Ca²⁺， 五A型是由Ca²⁺交换Na-A型分子筛而来）。这使其对极性分子、不饱和分子（如烯烃）以及具有孤对电子的分子（如H₂O、CO、NH₃）具有非常强的亲和力。
高比表面积与规整孔道：提供巨大的吸附表面和一致的扩散路径，有利于获得高分离效率和尖锐的色谱峰。

主要应用领域
由于其独特的性质，五A分子筛色谱填料主要用于气相色谱，在以下分析中表现卓越：
永久性气体和低级烃类的分离：这是其*经典和*重要的应用。
例如：在一根5埃分子筛柱上，可以很好地分离 O₂、N₂、CH₄、CO 的混合物。其中，CO因具有偶极矩，与分子筛作用较强，出峰较晚。

浩瀚色谱（山东）应用技术开发有限公司,研制生产的《5埃分子筛填充色谱柱应用岛津GC2014》，分离氢，氧，氮，一氧化碳，甲烷柱效高，分离好，分离良好，在安捷伦，岛津，赛默飞，瓦里安，布鲁克，PE上安装使用，效果良好。
 

名称：MS五A填充柱

规格：3m*3mm，60-80Mesh

zui高使用温度：320°C

应用：氢，氧，氮，一氧化碳，甲烷的分离

 

适用于：

安捷伦490在线/便携，4890,5890,6890,7820,7890,8860,8890

岛津GC-14C，GC-2010，GC-2014，GC-2030

赛默飞1310,1300,1610,1600

瓦里安3800系列

布鲁克PE580,590,680,690

磐诺A90，福立GC9790，华爱，天瑞，天美，GC7900，川仪，北分瑞利，东西电子，鲁南瑞虹，捷岛/科晓
 

5 angstrom molecular sieve chromatographic packing refers to a chromatographic stationary phase (packing) with penta type molecular sieve as the core adsorbent material. It is composed of artificially synthesized aluminosilicate crystals, and its crystal structure has regular and uniform pore sizes.
5 angstroms "refers to an effective pore size of approximately 5 angstroms (0.5 nanometers). This size is its key feature, determining which molecules it can selectively adsorb or pass through.
'Chromatographic packing' means that it is specially processed (such as shaped into small balls or particles and activated) and loaded into a chromatographic column for the separation and analysis of mixtures.
Key characteristics and working principle
Shape selective adsorption: This is its most fundamental principle. Only substances with a molecular dynamics diameter less than 5 Å can enter their pores and be adsorbed, while molecules with a diameter greater than this are blocked outside. This achieves precise separation based on molecular size and shape.
Strong polarity surface: The molecular sieve skeleton carries a negative charge, and there are exchangeable cations in the pores (such as Ca ² ⁺, the penta A type is obtained by exchanging Ca ² ⁺ with Na-A type molecular sieve). This gives it a very strong affinity for polar molecules, unsaturated molecules (such as olefins), and molecules with lone pair electrons (such as H ₂ O, CO, NH3).
High specific surface area and regular pores: providing a huge adsorption surface and consistent diffusion path, which is beneficial for obtaining high separation efficiency and sharp chromatographic peaks.
Main application areas
Due to its unique properties, penta A molecular sieve chromatography packing is mainly used in gas chromatography and performs excellently in the following analyses:
The separation of permanent gases and lower hydrocarbons: this is its most classic and important application.
For example, a mixture of O ₂, N ₂, CH ₄, and CO can be well separated on a 5 angstrom molecular sieve column. Among them, CO has a strong interaction with molecular sieves due to its dipole moment, resulting in a later peak appearance.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed and produced the "5-Å Molecular Sieve Filled Chromatography Column Application Shimadzu GC2014", which has high column efficiency for separating hydrogen, oxygen, nitrogen, carbon monoxide, and methane, with good separation performance. It has been installed and used on Agilent, Shimadzu, Thermo Fisher, Varian, Bruker, and PE with good results.
Name: MS 5A filling column
Specification: 3m * 3mm, 60-80Mesh
Maximum operating temperature: 320 ° C
Application: Separation of hydrogen, oxygen, nitrogen, carbon monoxide, and methane
Suitable for:
Agilent 490 online/portable, 48905890689088608890
Shimadzu GC-14C, GC-2010, GC-2014, GC-2030
Thermo Fisher Scientific 1310130016101600
Varian 3800 Series
Brooke PE580590680690
Panno A90, Fuli GC9790, Huaai, Tianrui, Tianmei, GC7900， Chuanyi, Beifen Ruili, Dongxi Electronics, Lunan Ruihong, Jiedao/Kexiao