Prospects for the Development of Ethylene Oxide Production Catalysts and Processes (Review)
, E-ISSN: 1531-8532
||ethylene oxide, production catalysts
Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
Federal Agency for Scientific Organizations
The main stages of the development of industrial Ag–Al2O3 catalysts for the gas-phase epoxidation of ethylene are considered. The greatest attention is paid to the methods of preparation aimed at increasing the productivity of the last-generation catalyst systems. The results of the studies of alternative heterogeneous systems based on silicates modified by Ti, Nb, and W for liquid-phase epoxidation of ethylene with H2O2 are also summarized. The reasons and methods for solving the problem of their low activity/productivity and stability are analyzed, the directions of increasing the H2O2 utilization efficiency are evaluated.