The thermal decomposition of ammonium copper chromate was studied by TG, DTG and DTA in the temperature range 30‡ to 1100‡. It was found to occur in four stages. The solid decomposition products in these stages were characterized by chemical, X-ray and IR analysis. Based on the results, a probable mechanism for the overall decomposition of ammonium copper chromate in the above temperature range is discussed.

Thermal analysis of ammonium copper chromate

Hydrogenation and dehydrogenation in the catalyst industry includes the hydrogenation of carbon oxides, 0x0 synthesis, ammonia synthesis, oil and fat hydrogenation, acetylenes, olefins, and aromatic hydrocarbons, petroleum, coal, and related materials, hydrogenation of miscellaneous organic compounds, and dehydrogenation of organic compounds. A considerable part of the periodic table has been explored as potential catalysts for the above processes at different conditions of temperature, pressure, and space velocities. The purpose of this paper is to take a look at nickel catalysts from the standpoint of their physical and chemical properties and also their solid state reactions, as applied to potential happenings in various hydrogenation processes.

W. M. Keely

Papers

Solid State Reaction Study of Chromium Trioxide and Chromium(ic) Oxide with the Hydrated Nitrates of Nickel and Cobalt.