Kinetic analysis of the catalytic hydrogenation of alkyl levulinates to γ-valerolactone

详细信息    查看全文

• 作者：Leila Negahdar ; Mohammad G. Al-Shaal ; Fabian J. Holzhä ; user ; Regina Palkovits ; ^{Palkovits@itmc.rwth-aachen.de}
• 关键词：Alkyl levulinates ; γ-valerolactone ; Levulinic acid ; Levulinic acid esters ; Hydrogenation ; Kinetics ; Heterogeneous catalysts ; Ru/C
• 刊名：Chemical Engineering Science
• 出版年：2017
• 出版时间：2 February 2017
• 年：2017
• 卷：158
• 期：Complete
• 页码：545-551
• 全文大小：1090 K
• 卷排序：158

文摘

Kinetics of the hydrogenation of alkyl levulinates to γ-valerolactone over Ru/C were investigated. γ-Valerolactone with 85% selectivity was produced from methyl levulinate after 5 h. Substrates with shorter alkyl residue show higher selectivity toward γ-valerolactone. Kinetic modeling indicates lactonization as the rate determining step. Activation energies of hydrogenation and lactonization increaseas methyl levulinate<ethyl levulinate<butyl levulinate.