| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: invention relates to production of synthetic granular type A zeolites used as adsorbents and catalysts. Disclosed is a method of producing granular type A zeolite without binder, which involves mixing initial components in grinders with impact-shift loading type with power density of 0.1-70 kW/kg for 0.05-4 hours using annealed kaolin, solid sodium hydroxide and 3-7 wt % carboxymethyl cellulose or modified starch as the initial components. The mixture undergoes thermal activation at 450-700C and hydrothermal activation at 70-90C in a single step in an alkaline solution with sodium hydroxide concentration of 3-5 mol/l. ^ EFFECT: invention increases the strength of zeolite granules by more than 1,5 times and porosity by 23-25%. ^ 2 cl, 1 tbl, 3 ex |
