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Engineering Commons

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Theses/Dissertations

Chemical engineering

Retrospective Theses and Dissertations

Physical Sciences and Mathematics

1998

Articles 1 - 2 of 2

Full-Text Articles in Engineering

Process Analysis And Yield Enhancement For The Production Of Beta-Hydroxy-Beta-Methyl-Butyrate (Hmb) , George Barac Jan 1998

Process Analysis And Yield Enhancement For The Production Of Beta-Hydroxy-Beta-Methyl-Butyrate (Hmb) , George Barac

Retrospective Theses and Dissertations

The purpose of this work was to develop an optimum chemical process philosophy for the manufacture of [beta]-hydroxy-[beta]-methyl-butyrate (HMB), using existing synthesis and purification schemes as a starting point. Process analysis and improvement were performed as a means to increase overall efficiency and to address environmental concerns;A protein breakdown suppresser, HMB is used as a nutritional supplement or as a feed additive. The current process which employs reaction of diacetone alcohol and sodium hypochlorite, separation of the product by batch extraction, and crystallization, displays very low efficiency and has to deal with waste disposal issues. Currently ...


A Kinetic Study On The Adsorption And Reaction Of Hydrogen Over Silica-Supported Ruthenium And Silver-Ruthenium Catalysts During The Hydrogenation Of Carbon Monoxide , David Paul Vanderwiel Jan 1998

A Kinetic Study On The Adsorption And Reaction Of Hydrogen Over Silica-Supported Ruthenium And Silver-Ruthenium Catalysts During The Hydrogenation Of Carbon Monoxide , David Paul Vanderwiel

Retrospective Theses and Dissertations

An interesting phenomenon in bimetallic catalysis is the synergistic effect between two metals during CO hydrogenation. For example, addition of Ag to Ru catalysts results in a dramatic decrease in the specific activity of the catalyst, even though Ag alone does not appreciably adsorb H2 or CO. A series of Ag-Ru/SiO2 catalysts containing 0, 3, 10, 20 and 30 atomic percent silver was used to examine the kinetics of the adsorption and reaction of H2 on Ru during CO hydrogenation. CO was saturatively adsorbed at room temperature on each catalyst, followed by subsequent reaction with ambient H2 at 460 ...