4A Molecular Sieve

タイトルまたは説明

*-) What is 4A Molecular Sieve
4 molecular sieve is a kind of alkali metal silicic acid salt and can absorb water and other molecules with a critical diameter less than 4 such as NH3, H2S, SO2, CO2, C2H5OH, C2H6, and C2H4. It is widely used in the drying, refining and purification of liquids and gases (such as the preparation of argon).

*-) 4A Molecular Sieve Applications:

2.1.Polyester Agent Additives
These molecular sieves are used to assist detergents as they can produce demineralized water through calcium ion exchange, remove and prevent the deposition of dirt. They are widely used to replace phosphorus. The 4 molecular sieve plays a major role to replace sodium tripolyphosphate as detergent auxiliary in order to mitigate the environmental impact of the detergent. It also can be used as a soap forming agent and in toothpaste.

2.2Harmful Waste Treatment
4 molecular sieves can purify sewage of cationic species such as ammonium ions, Pb2+, Cu2+, Zn2+ and Cd2+. Due to the high selectivity for NH4+ they have been successfully applied in the field to combat eutrophication and other effects in waterways due to excessive ammonium ions. 4 molecular sieves have also been used to remove heavy metal ions present in water due to industrial activities.
2.3.Other Purpose
The metallurgical industry - separating agent, separation, extraction of brine potassium, rubidium, cesium.
Petrochemical industry, catalyst, desiccant, adsorbent
Agriculture - soil conditioner;
Medicine - load silver zeolite antibacterial agent.

*-) Molecular Sieve 4A Technical Parameter
A4 Molecular Sieve Chemical Formula: Na2O•Al2O3•2SiO2•9/2H2OA4
Molecular Sieve Silica-alumina ratio: SiO2/ Al2O3≈2