期刊
APPLIED CATALYSIS A-GENERAL
卷 359, 期 1-2, 页码 129-135出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcata.2009.02.037
关键词
1-Alkene metathesis; Mo heterogeneous catalysts; Molybdenum dioxide bis(acetylacetonate); Molybdenum dioxide bis(glycolate); Mesoporous molecular sieves
资金
- Academy of Sciences of the Czech Republic [IAA400400805, KAN100400701]
- Czech Republic and France [Barrande 2-07-23]
New heterogeneous catalysts for alkene metathesis were prepared by immobilization of molybdenum dioxide bis(acetylacetonate) and molybdenum dioxide bis(glycolate) on mesoporous molecular sieve SBA-15. Thermal spreading (TS) method and wet impregnation (WI) followed by calcinations were employed as synthesis approaches. These new catalysts represent inexpensive, easy-to-prepare and highly active and selective heterogeneous catalysts for metathesis of higher linear 1-alkenes applicable under mild reaction conditions without the necessity of solvent or co-catalyst in the reaction mixture. In metathesis of 1-octene, these catalysts showed up to four times higher activity compared with MoO3 supported on conventional silica as well as on SBA-15. This is probably due to the better dispersion of the molybdenum oxide phase on the mesoporous support surface. In metathesis of 1-dodecene and 1-tetradecene these catalysts based on SBA-15 exhibited a significantly higher activity than corresponding catalysts on MCM-41, probably due to the larger pores. (C) 2009 Elsevier B.V. All rights reserved.
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