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Catalytic activity of clay-based titanium silicalite-1 composite in cyclohexanone ammoximation

Industrial and Engineering Chemistry Research, ISSN: 0888-5885, Vol: 48, Issue: 18, Page: 8441-8450
2009
  • 30
    Citations
  • 0
    Usage
  • 17
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    30
    • Citation Indexes
      30
  • Captures
    17

Article Description

Following the recent report on the synthesis of a clay-based titanium silicalite-1 (TS-1) composite, this work provided important information on the catalytic activity of the catalyst developed for cyclohexanone ammoximation. Experimental works showed that the optimum molar ratio of cyclohexanone:H O:NH was 1:1.6:2.5. It was found that the cyclohexanone ammoximation over the clay-based catalytic composite gave the highest oxime yield when HO and NH was continuously added and was evenly distributed in 5 doses, respectively, to the reaction mixture. The external and internal diffusions can be eliminated by using a water: t-butanol mixture as a solvent, with sufficiently fast agitation speed and having TS-1 crystal with size smaller than 500 nm. On the basis of the adsorption studies and the spectroscopic evidence, the mechanism of the cyclohexanone ammoximation over the catalyst developed are suggested to follow Langmuir-Hinshelwood and Eley-Rideal kinetics. The data acquired in this study is particularly essential for industrial reactor design. © 2009 American Chemical Society.

Bibliographic Details

Alex C. K. Yip; Xijun Hu

American Chemical Society (ACS)

Chemistry; Chemical Engineering; Engineering

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