9BASF. Two - stage Hydrogenation Methed for Producing 1,4 - Butanediol in Reactors from C4 Dicarboxylic Acids and Their Derivatives.WO 2003104214. 2003. 被引量:1
10BASF. Method for the Production of 1,4 - Butanediol by Combined Gas- phase and Liquid - phase Hydrogenation of C4 Dicarboxylic Acids or Their Derivatives. WO 2003104176.2003. 被引量:1