Effect of modifying additives on the selectivity of transformation of methanol into aromatic hydrocarbons or lower olefins in the presence of pentasils

Autor: Vasina, T. V., Isaev, S. A., Preobrazhenskii, A. V., Rostanin, N. N., Konoval'chikov, L. D., Nefedov, B. K., Bragin, O. V.
Zdroj: Russian Chemical Bulletin; December 1987, Vol. 36 Issue: 12 p2470-2474, 5p
Abstrakt: 1.Modification of the 70% HZHM + 30% Al2O3 HS zeolite composite with Co or Zn + Cr oxides (from 5 to 15%) increases the aromatizing activity of the catalysts in conversion of methanol by 1.5–2 times.2.The 10% P2O5/70% HZHM + 30% Al2O3 catalytic system is efficient in selective transformation of methanol into C2-C4, olefins (yield >70%).3.The conditions of their preliminary activation have a significant effect on the catalytic activity of Co- and Zn + Cr-containing zeolite systems; successive air-hydrogen treatment was optimum for these systems.
Databáze: Supplemental Index
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