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| Product Name: |
Sulfonated Coal
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Sulfonated Coal |
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Sulfonated Coal
1. Description:
This product is a kind of coal outcome which sulfonated with oleum or concentrated sulfuric acid. After sulfonation, the aromatic nucleus of coal will be with sulfonic acid groups (-SOH), at the same time, via oxidation of concentrated sulfuric acid, the aromatic nucleus will be turned into carboxyl group (-COOH) and hydroxyl group (-OH).
It is a kind of ion exchanger with multifunctional groups, which has cation exchange capacity. It has two ionic forms, H+ type and Na+ type, and can exchange Ca2+, Mg2+ and others in hard water.
2. Typical Physical and Chemical Properties:
①Appearance：Black irregular particles
②Exchange capacity (gram equivalent /m3)?50 - 360
③Particle size range (%) ? (0.4-2.0mm)?0
④Water retention (%)?0 - 40
⑤Coefficient of expansion?）：1.10 - 1.15
⑥Operating pH-range? - 14
⑦Ionic form as shipped：Na+
3.Working process:
a) Sulfonated coal is a kind of porous material with water absorbing capacity. It will expand after absorbing the water, and the coefficient of expansion is 1.10-1.15.
b) Sulfonated coal is a kind of cation exchanger with multifunctional groups. Its structural formula can be indicated as:
↗SO3H
R →COOH ( In order to make it easy to understand, we make RH to be its
?OH simplified form.)
The hydrogen ions ( H ) in this functional group can be replaced by metallic ions. Under another circumstance, it also can work in reverse order. For example:
RH + Na+←→RNa + H+
Thereinto, RH is hydrogen type (H+ type) sulfonated coal, while RNa is sodium type (Na+ type) sulfonated coal. When we use sulfonated coal to soften the water, its ion exchange process is as below:
2RNa + Ca+ ?R2Ca + 2Na+ ( or 2RNa + Mg+ ?R2Mg + 2Na+ )
H+ type: 2RH + Ca+ ?R2Ca + 2H+
After removing the Ca+ or Mg+, we will turn the hard water into soft water.
After H+ of RH or Na+ of RNa replaced by Ca+ or Mg+, the sulfonated coal will lose the ability of exchange. So we need to re |
| Company: |
Anhui Sanxing Resin Technology Co.,Ltd
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| Contact: |
Ms. dandan hong |
| Address: |
Sanxing Road,Guzhen Economic Development Zone, Anhui,China |
| Postcode: |
233700 |
| Tel: |
86-552-6566888 |
| Fax: |
86-552-6566188 |
| E-mail: |
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