1-butene and 2-butenes production using the positional isomerization of butenes catalyzed by sulfonic acid cation exchangers

2010 ◽  
Vol 44 (4) ◽  
pp. 531-535 ◽  
Author(s):  
O. S. Pavlov ◽  
S. A. Karsakov ◽  
S. Yu. Pavlov
1984 ◽  
Vol 18 (4) ◽  
pp. 216-220 ◽  
Author(s):  
S. D. Fazio ◽  
J. B. Crowther ◽  
R. A. Hartwick

2017 ◽  
Vol 314 ◽  
pp. 192-201 ◽  
Author(s):  
Pornsawai Praipipat ◽  
Medhat Mohamed El-Moselhy ◽  
Kulyakorn Khuanmar ◽  
Panomchai Weerayutsil ◽  
Trung Thanh Nguyen ◽  
...  

Author(s):  
I.N. Makarenko ◽  
I.N. Trus ◽  
A.I. Petrychenko ◽  
A.Yu. Kiichenko

It was studied processes of ion-exchange water purification from ammonium ions from model solutions on cation exchangers and on zeolite. It was established dependencies ammonium sorption on the form of ion exchanger, the ratio of ammonium and calcium in water and the level of ion concentrations in solution. It was shown that the strongly acid cation exchanger KU-2-8 in Na+-form has a low selectivity for ammonium ions, in comparison with the H+-form. It was established that the sorption efficiency of ammonium ions on cation exchangers KU-2-8 and Dowex Mac-3 decreases in the presence of calcium ions. It was determined that regeneration of cation exchanger KU-2-8 was more effective when hydrochloric acid solutions were used. It was shown that ammonium sorption on zeolite from tap water goes in the same way as from model solutions. It was determined the boundary capacity of the zeolite for ammonium ions and it was amounted 40 mg/g. The regeneration of zeolite with a sodium chloride solution was investigated and it was established that the degree of regeneration reached 100 %. Bibl. 16, Fig. 6, Tab. 1.


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