Catalytic decomposition of dibenzothiophene sulfones over layered double hydroxide catalysts

Min Ji Kim, Hyeonjoo Kim, Kwang Eun Jeong, Soon Yong Jeong, Young Kwon Park, Jong Ki Jeon

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The object of the present study is to apply layered double hydroxide catalysts to remove sulfur dioxide from sulfone compounds, by-products of Oxidative Desulfurization (ODS). The effects of Mg/Al ratio, aging temperature, and calcination on the characteristics of the layered double hydroxide catalysts were investigated through the BET surface area, XRD, SEM, and temperature-programmed desorption of CO2. The layered double hydroxide catalyst with an Mg/Al ratio of 2 or 3 and with an aged temperature of 150°C was found to be optimal for the decomposition of dibenzothiophene sulfone. It has since been ascribed to a well-developed LDH structure and has the greatest amount of base site. The optimized layered double hydroxide catalysts were found to have high activity and stability during the catalytic removal of sulfur dioxide from sulfones that were in ODS diesel.

Original languageEnglish
Pages (from-to)539-545
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Volume16
Issue number4
DOIs
StatePublished - Jul 2010

Keywords

  • Mg-Al-LDH
  • Oxidative desulfurization
  • Solid base catalyst
  • Sulfone

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