Supported mesoporous solid base catalysts for condensation of carboxylic acids

Ambareesh D. Murkute, James E. Jackson, Dennis J. Miller

Research output: Contribution to journalArticle

  • 38 Citations

Abstract

New mesoporous base catalysts (CM-HMS and CM-MCM-41) were synthesized by generating uniform particles of cerium and manganese oxides (MnO x/CeO2) in situ within hexagonal mesoporous silica (HMS) and MCM-41 supports. These catalysts were characterized by N2 adsorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray spectrometry (EDX), FTIR, temperature-programmed desorption of CO2 (CO2-TPD), and diffuse reflectance UV-visible (UV-vis) spectroscopy. Spectroscopic studies reveal that some particles of MnOx/CeO2 are incorporated into the walls of the silica network of HMS and MCM-41, while others are highly dispersed onto the surface of the HMS or MCM-41. The catalytic activity of CM-HMS and CM-MCM-41 for the ketonization of carboxylic acids was confirmed; better utilization of Ce and Mn was observed than in unsupported MnOx/CeO2. The citrate-based preparation of MnOx/CeO2 catalyst supported on HMS and MCM-41 has not been previously reported in the literature.

LanguageEnglish (US)
Pages189-199
Number of pages11
JournalJournal of Catalysis
Volume278
Issue number2
DOIs
StatePublished - Mar 7 2011

Profile

Carboxylic Acids
Carboxylic acids
carboxylic acids
Silicon Dioxide
Multicarrier modulation
Condensation
condensation
Silica
silicon dioxide
catalysts
Catalysts
Carbon Monoxide
Temperature programmed desorption
Catalyst supports
cerium oxides
Manganese oxide
manganese oxides
citrates
Cerium
Ultraviolet spectroscopy

Keywords

  • Carboxylic acids
  • Cerium
  • Ketonization
  • Manganese
  • Mesoporous silica

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

Cite this

Supported mesoporous solid base catalysts for condensation of carboxylic acids. / Murkute, Ambareesh D.; Jackson, James E.; Miller, Dennis J.

In: Journal of Catalysis, Vol. 278, No. 2, 07.03.2011, p. 189-199.

Research output: Contribution to journalArticle

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