Cerium-molybdenum-tellurium oxide

The complex solid state relations of the cerium-molybdenum- tellurium oxide system were studied to determine the boundaries of single phase regions and phase distributions of a typical multicomponent ammoxidation catalyst. Between 400 and 600 C in air the (Ce,Mo,Te)0 system contains the following phases ... 

BART ET AL. Cerium-Molybdenum-Tellurium Oxide System... 

The structure of a highly active cerium-molybdenum-tellurium acrylonitrile catalyst(l ) has previously been described in terms of binary (Ce,Mo)0 and ternary (Ce,Mo,Te)0 phases( ). It was concluded that none of the constituent oxides (CeO, ... 

While SNAM developed mixtures based on the use of bismuth and vanadium compounds, Montedison, whose exclusive operating license was acquired in 1975 by UOP, preferred a supported catalyst based on oxides of cerium, molybdenum and tellurium on silica. OSW employs a mixture of metallic bismuth and molybdenum deposited on a support... 

Around the same time, but slightly later, Edison (later Montedison) was also developing a similar process, but based on different catalysts (tellurium-cerium oxides) [7]. Although at that time the performance of these catalysts were equal or slightly superior to bismuth molybdenum oxides, the process was never commercialized. 

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