Is molecular sieve toxic?
Molecular sieves pose little toxicity as they’re made of zeolite, which are also found in nature. If they have adsorbed any toxic gasses, such as freons, they may pose health problems.
What is molecular sieve made from?
Molecular sieves are crystalline metal aluminosilicates having a threedimensional interconnecting network of silica and alumina tetrahedra. Natural water of hydration is removed from this network by heating to produce uniform cavities which selectively adsorb molecules of a specific size.
How do you dispose of molecular sieves?
In the United States, molecular sieve can be disposed of in a licensed landfill. The material is normally analyzed to meet the regulations for proper chemical waste management. For safety information, Safety Data Sheets can be found online.
How do you activate molecular sieves 4A?
Dehydration means 3A or 4A molecular sieves are needed. They can be activated by passing hot dry gas through them. Usually the boiling point of water is sufficient if the gas is supplied very dry like distilled argon or nitrogen for most purposes and distilled neon or helium for extreme cases.
What is 4A molecular sieve?
The 4A molecular sieve is an alkali metal aluminosilicate with an effective pore opening of approximately 4 angstroms. The sodium form of type A is widely used as a general-purpose drying agent and has good physical and adsorption properties.
What is a z4-01 molecular sieve?
Our Z4-01 molecular sieve is the standard grade of the 4A type zeolite that is used for dehydration of synthesis gas for the production of ammonia in plants currently using this product or in plants not utilizing cryogenic impurity removal. It effectively removes water, ammonia and carbon dioxide (CO 2) from the feed stream.
Why choose zeochem’s molecular sieves?
Zeochem has an extensive portfolio of CaX and CaLSX type molecular sieves, each specifically designed to provide maximum performance in its specific applications. Zeochem’s line of lithium molecular sieves offers proven performance, as exhibited by the millions of pounds used in air separation across the globe.
What is a sieve in chemistry?
Molecular Sieves Molecular sieve adsorbents are crystalline aluminosilicates, known as zeolites. Their unique structure allows the water of crystallization to be removed, leaving a porous crystalline structure. These pores, or cages, have a high affinity to re-adsorb water or other polar molecules.