abstract |
FIELD: chemistry. n SUBSTANCE: composition contains 1-20% yttrium oxide, 1-30% tungsten oxide and zirconium oxide - the rest. The specific surface area of the composition is at least equal to 20 m 2 /g after calcination for 4 hours at 900°C. n EFFECT: high efficiency of the catalyst, obtaining catalysts with specific acidity and heat resistance. n 13 cl, 1 tbl, 1 ex |