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Molecular sieves, 13X

分子筛,13X

品牌
Sigma-Aldrich
CAS
63231-69-6
货号
334359
包装型号
规格纯度
pellets, 3.2 mm
参考价格
1048.5 *本价格含增值税费
促销
服务
  • 原厂保证
  • 包邮
  • 增值税票
数量
-+
产品名称:
63231-69-6
Molecular sieves, 13X
分子筛,13X
产品介绍:

产品说明

一般描述

Choosing a Molecular Sieve:
1. The preferential adsorption of one molecule over another depends upon pore diameter and mesh size.
2. The dynamic capacity of the silica gel for adsorbing a particular compound is governed by the internal surface area; the greater the surface area, the greater the dynamic capacity.
3. Rate of adsorption and sharpness of resolution are dependent chiefly on particle size and column packing; a fine particle size gives optimum sharpness of resolution.
4. Liquids are most readily adsorbed from solvents in which they are least soluble; a good solvent makes a good desorbing agent.
5. Highly polar liquids are readily adsorbed. Compounds having hydroxyl groups, or containing oxygen are strongly adsorbed.
6. For similar compounds, the higher the molecular weight the higher the selectivity.
7. For hydrocarbons of similar molecular weight, adsorptivity increases with the number of double bonds.
Regeneration or Activation:
A saturated molecular sieve can be restored to its original capacity by regeneration, the principle of which involves changing the conditions surrounding the adsorbent to correspond to a very low equilibrium capacity. In general, the greater the difference between the equilibrium capacities of adsorption and regeneration, the more rapid and complete the regeneration.
The sieve may be regenerated in one of four ways:
1. Thermal reactivation –The maximum regeneration temperature for Silica is 300℃.
2. Pressure reactivation
3. Passing an appropriate fluid through the gel bed at normal temperature and pressure.
4. Displacement of adsorbates by passing a high concentration of molecules in a fluid through the bed.

包装

1 kg in poly bottle

基本信息

线性分子式Na86[AlO2)86(SiO2)106] · xH2O
MDL编号MFCD00131613
eCl@ss32110204

产品性质

质量水平100
形式pellets
粒径3.2 mm

安全信息

象形图GHS07
警示用语:Warning
危险声明H315 - H319 - H335
预防措施声明P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
危险分类Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
靶器官Respiratory system
储存分类代码11 - Combustible Solids
WGKWGK 3
闪点(F)Not applicable
闪点(C)Not applicable

Sigma-Aldrich

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