FIELD: chemistry.
SUBSTANCE: claimed is BaKX zeolite adsorbent without binding agent. Adsorbent includes first zeolite X, which has molar ratio of silicon dioxide to aluminium oxide from 2.0 to 3.0, and second zeolite X, obtained from binding agent. Ratio of zeolite X, obtained from binding agent, to first zeolite X constitutes from 10:90 to 20:80 by weight. Adsorbent contains barium and potassium on cation-exchange parts of BaKX zeolite adsorbent. Potassium content constitutes from 0.9 to 1.5 wt %. Barium content constitutes from 30 to 34 wt %. Claimed is method of obtaining adsorbent, including formation of agglomerates from zeolite X, kaolin clay and carboxymethylcellulose, activation of agglomerates to convert kaolin clay into meta-kaolin clay, decomposition of carboxymethylcellulose, ionic exchange for barium and potassium, adsorbent drying. Separation of para-xylene with application of obtained adsorbent is claimed.
EFFECT: increased adsorbent efficiency in processes of separating hydrocarbons with preservation of its strength.
10 cl, 3 dwg, 1 tbl
Authors
Dates
2015-03-20—Published
2012-03-23—Filed