Dehydration of 4-hydroxy-2-butanone (HB) to 3-buten-2-one (MVK) was investigated. Anatase-TiO2 exhibited excellent activity for the dehydration of HB with 98.8 mol% MVK yield. The highest activity was obtained at 160 degreesC, and deactivation was rarely observed over anatase-TiO2. HB decomposes into propanone above 240 degreesC, and the MVK selectivity decreases with increasing temperature. High acidity of catalysts causes deactivation because of strong interaction between MVK and acid sites that induces polymerization. Weak acid sites are efficient for the dehydration of HB to MVK. (C) 2004 Elsevier B.V. All rights reserved.
机构:
King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi ArabiaKing Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi Arabia
Badra, Jihad
Elwardany, Ahmed E.
论文数: 0引用数: 0
h-index: 0
机构:
King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi ArabiaKing Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi Arabia
Elwardany, Ahmed E.
Khaled, Fethi
论文数: 0引用数: 0
h-index: 0
机构:
King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi ArabiaKing Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi Arabia
Khaled, Fethi
Vasu, Subith S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Cent Florida, Dept Mech & Aerosp Engn, Orlando, FL 32816 USAKing Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi Arabia
Vasu, Subith S.
Farooq, Aamir
论文数: 0引用数: 0
h-index: 0
机构:
King Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi ArabiaKing Abdullah Univ Sci & Technol, Div Phys Sci & Engn, Clean Combust Res Ctr, Thuwal 23955, Saudi Arabia