Abstract: The present disclosure relates to chromium-on-alumina dehydrogenation catalyst materials, to methods for making such catalysts, and to methods for dehydrogenating hydrocarbons using such catalysts. In one aspect, the disclosure provides a method for preparing a dehydrogenation catalyst material, the method comprising impregnating a chromium-on-alumina material with ascorbic acid, one or more of sodium, lithium and potassium (e.g., sodium), and chromium; and calcining the impregnated material to provide the dehydrogenation catalyst material comprising chromium in the range of 2.5 wt. % to about 35 wt. % and having no more than 100 ppm chromium(VI).

Abstract: Embodiments are directed towards providing analytics and marketplace data to members of a user community. In some embodiments, the analytics and marketplace data are generated based on machine data provided by the members. The analytics and marketplace data may enable automatically identifying, configuring, monitoring, controlling, managing, and/or maintaining a machine or a collection/system of machine components. The analytics may include, but are not limited to analytics related to machine component reliability, machine maintenance conditions, machine prohibited conditions, machine usages, machine alert conditions, and the like. The marketplace data may include information relating to the maintenance of the machine, replacement components or alternative components for the machine, and the like for various machines. Marketplace data may include an aggregation of electronic (e)-commerce data.