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Co-TUD-1: A Ketone-Selective Catalyst for Cyclohexane Oxidation

✍ Scribed by Mohamed S. Hamdy; Anand Ramanathan; Thomas Maschmeyer; Ulf Hanefeld; Jacobus C. Jansen

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
232 KB
Volume
12
Category
Article
ISSN
0947-6539

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✦ Synopsis

Abstract

Cobalt‐containing mesoporous TUD‐1 with different Si/Co ratios (100, 50, 20, and 10) was synthesized by the direct hydrothermal treatment method (DHT) using triethanolamine (TEA) as a template. The prepared samples (denoted as Co‐TUD‐1) were characterized by XRD, UV/Vis spectroscopy, elemental analysis, N~2~ sorption measurements, ^29^Si magic‐angle spinning (MAS)‐NMR, Raman spectroscopy, and HRTEM. The catalytic performance of Co‐TUD‐1 samples was tested in the liquid‐phase oxidation of cyclohexane with tert‐butylhydroperoxide (TBHP) as oxidant under solventless conditions. Higher catalytic efficiency was observed in samples with low Co‐loading and thus, most likely isolated Co^II^ active sites, than in samples with high Co‐loading and nanoparticles or bulk Co~3~O~4~ embedded in the TUD‐1 silica.

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