Vapor phase catalysts

C using a wide variety of catalysts (28) and even with no catalyst (29). Vapor-phase catalysts capable of converting acetic acid to acetone directiy convert the steam—acetylene mixture to acetone (28,30,31). 

Coal-Hydrogenation Vapor-Phase Catalysts E. E. Donath... 

Halide Promoter. A halide promoter, such as methyl iodide, is essential for the carbonylation of methanol for liquid and vapor phase catalysts. As reported in Table II, the reaction order of... 

II. Brief History of Vapor-Phase-Catalyst Development. 242... 

Tungsten sulfide as vapor-phase catalyst is used in the form of pellets which are pressed from the powder in commercial tableting machines under a pressure as high as 5000 kg./cm.2 (75,000 p.s.i.). Three-millimeter pellets were used in pilot plants and 10-mm. pellets in commercial plants. 

Oonath, E. E., "Coal Hydrogenation Vapor Phase Catalysts," Advances in Catalysis, Volume III, Academic Press, 1956, p. 258. 

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