| http://www.w3.org/ns/prov#value | - As to the solvent used in the catalytic hydrogenation, water, acetic acid, alcohols such as methanol, ethanol, isopropanol; hydrocarbons such as hexane and cyclohexane; ethers such as diethylene glycol dimethyl ether, dioxane, tetrahydrofuran and diethyl ether; esters such as ethyl acetate and methyl acetate; aprotic polar solvents such as dimethylformamide; and mixed solvent thereof can be exempl
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