| http://www.w3.org/ns/prov#value | - rogen and a combination of ruthenium metal and a carbon support in a packed column.The type of packed column is not particularly important as long as the column functions as a fixed bed such that the liquid reactant passes over the catalyst to provide good gas/liquid/solid mass transfer conditions.Preferably hydrogen and the solution from the first step are introduced into the top of the packed co
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