zeolite A

Phosphorylated zeolite-A/chitosan composites were prepared and characterized as an alternative material for proton exchange membrane fuel cell (PEMFC). Their applicability was demonstrated by mechanical properties, swelling property, proton conductivity, methanol permeability, and thermal resistance. Chitosan was prepared from shrimp shell waste by deproteination, demineralization, and deacetylation. Chitosan was modified using zeolite A in the various concentrations.

The isothermal crystallization of zeolite A in calcined kaolin granules is researched. For providing maximum creation of zeolite phase the optimal conditions of thermal threatment and modification of initial aluminosilicate is determined. Досліджено ізотермічну кристалізацію цеоліту А в гранулах з термообробленого каоліну. Визначено оптимальні умови термоактивації та модифікування вихідного алюмосилікату для забезпечення максимального утворення цеолітової фази.