4.6 Article

Immobilized Pd complexes over MCM-41 as supported catalysts for effective reformation of hydrocarbons

期刊

CATALYSIS SCIENCE & TECHNOLOGY
卷 1, 期 7, 页码 1224-1231

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ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cy00170a

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资金

  1. Foundation of Science and Technology, Portugal [PTDC/EQU-ERQ/110825/2009]
  2. Fundação para a Ciência e a Tecnologia [PTDC/EQU-ERQ/110825/2009] Funding Source: FCT

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The ethylthio alkane ligands i.e. di(ethylthio) ethane, I, and di(ethylthio) propane, II, have been used for the synthesis of Pd(II) complexes. These complexes were covalently anchored to the modified MCM-41 matrix as supported hybrid catalysts (MCM-41/I as Pd-I and MCM-41/II as Pd-II). Remarkable catalytic effects were observed when these supported catalysts act in n-hexane and n-heptane reformation reactions in the presence of H-2. Catalyst Pd-I provided the high TONs of 2325 with 91% selectivity for n-hexane and high TONs of 2145 with 88% selectivity for n-heptane under optimized and relatively mild conditions. A carbenium-based mechanism has been included to explain the product formation. TGA analysis indicates that these catalysts were thermally stable up to the reaction temperature and recyclable for further utilization.

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