Catalytic dehydration of lactic acid to acrylic acid over dibarium pyrophosphate

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• 作者：Congming Tang ; Jiansheng Peng ; Guoce Fan ; Xinli Li ; Xiaoli Pu ; Wei Bai
• 关键词：Dehydration ; Lactic acid ; Acrylic acid ; Dibarium pyrophosphate ; Biomass
• 刊名：Catalysis Communications
• 出版年：5 January, 2014
• 年：2014
• 卷：43
• 期：Complete
• 页码：231-234
• 全文大小：338 K

文摘

Barium phosphate catalysts were prepared by a precipitation method. The catalysts were calcined at 500 掳C for 6 h in air atmosphere and characterized by SEM for morphological features, by XRD for crystal phases, by N₂ sorption for specific surface area, by TPD-NH₃ for acidity and by TG for thermal stability. The dibarium pyrophosphate catalyst was found to have the best catalytic performance, ascribing to weak acidity on the surface. Under the optimal reaction conditions, 99.7% of the lactic acid conversion and 76.0% of the selectivity to acrylic acid were achieved over the dibarium pyrophosphate catalyst.