Strongly acidic cation

Dowex 50W-X2 0.6 0.70 Strongly acidic cation exchanger with S-DVB matrix for separation of peptides, nucleotides, and cations. Molecular weight exclusion <2700. 

In many industrial appHcations, strong acid cation-exchange resins are used in the hydrogen form to process Hquids containing low concentrations of salts. 

Strong" Acid Cation Excha.ngers. AH strong acid-type resins are made from styrene—DVB copolymers, with the exception of a minor quantity of phenoHc resin. Batch sulfonation using commercial strength sulfuric acid [8014-95-1] is common. 

Examples of pressure drop variation for new resin as a function of flow rate and water temperature are shown in Eigure 5 for a standard styrenic strong acid cation exchanger. The lower pressure drop at the higher temperature is a reflection of water viscosity. 

Eig. 5. Pressure drop as affected by resin type, flow rate, and temperature, where A, B, and C, correspond respectively to acryUc strong base anion exchanger (Amberlite IRA-458), styrenic strong base anion exchanger (Amberlite IRA-402), and styrenic strong acid cation exchanger (Amberlite IR-120), all at 4°C. D represents styrenic strong acid cation resin (Amberlite IR-120) at 50°C (14). To convert kg/(cm -m) to lb/(in. -ft), multiply by 4.33 to convert... 

When strong acid cation exchangers are used in the Na" form and strong base anion exchangers are used in the CL form, they are regenerated with a 10% sodium chloride [7647-14-5], NaCl, solution. Other concentrations may be used, perhaps with some adjustment in flow rate. 

Sucrose is inverted, or converted, to an approximate 50—50 mix of fmctose and glucose by hydrochloric acid or a strong acid cation exchanger in the hydrogen form. 

Demineraliza tion of water is the removal of essentially all inorganic salts by ion exchange. In this process, strong acid cation resin in the hydrogen form converts dissolved salts into their corresponding acids, and strong base anion resin in the hydroxide form removes these acids. Demineralization produces water similar in quaHty to distillation at a lower cost for most fresh waters. 

Strong-acid cation exchanger weak base anion exchangers... 

Strong Acid Cation Resin Charged with H ... 

As noted earlier, ion-exchange materials are grouped into four specific classifications depending on the functional group attached strong-acid cation, strong-base anion, weak-acid cation, or weak-base anion.. In addition to these, we also have inert resins that do not have chemical properties. 

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