Gas phase dehydration of lactic acid to acrylic acid over alkaline-earth phosphates catalysts
作者: E. BlancoP. DelichereJ.M.M. MilletS. Loridant
作者单位: 1Institut de Recherches sur la Catalyse et l’Environnement de Lyon, IRCELYON, CNRS-Université Claude Bernard Lyon 1, 2 Avenue Einstein, F-69626 Villeurbanne Cedex, France
刊名: Catalysis Today, 2014, Vol.226 , pp.185-191
来源数据库: Elsevier Journal
DOI: 10.1016/j.cattod.2013.09.059
关键词: Lactic acidAcrylic acidGas phase dehydrationAlkaline earth phosphatesAcid–base balance
原始语种摘要: Abstract(#br)A series of alkaline-earth phosphates were prepared by co-precipitation method using sodium free or sodium containing precursors and evaluated for gas phase dehydration of lactic acid. The catalysts were characterized by BET measurements, X-ray diffraction, chemical analysis, XPS spectroscopy and both NH 3 and CO 2 -TPD. After checking the stability of catalysts under feed, it was shown that selectivity to acrylic acid strongly depended on reaction temperature but not on contact time. At temperature of 380°C, values ranging from 19 to 49% were measured for the different prepared catalysts. The highest value was reached with Ba 3 (PO 4 ) 2 (55% for C3 products) but selectivities rather close were obtained with different other phosphates suggesting kinetic...
全文获取路径: Elsevier  (合作)
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影响因子:2.98 (2012)

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关键词翻译
关键词翻译
  • acrylic 丙烯酸的
  • selectivity 选择性
  • phase 相位
  • alkaline 碱的
  • lactic 乳汁的
  • earth 地球
  • dehydration 脱水
  • reaction 反酌
  • balance 平衡
  • adsorbed 被吸附的