Ga-MCM-41 nanoparticles: Synthesis and application of versatile heterogeneous catalysts

Xavier Collard, Li Li, Warunee Lueangchaichaweng, Arnaud Bertrand, Carmela Aprile, Paolo P. Pescarmona

Research output: Contribution to journalArticle

Abstract

Ga-MCM-41 materials with nanosized particles (<150 nm) were prepared according to two new synthesis methods. The structural and textural properties of the materials were characterized by XRD, N2-physisorption, TEM, SEM and EDX, while 71Ga MAS-NMR was employed to monitor the coordination of the gallium atoms. The two materials were tested as heterogeneous catalysts in three relevant reactions in the context of green production of valuable chemicals: (1) the reaction of glycerol with acetone to produce solketal; (2) the conversion of the triose sugar dihydroxyacetone to ethyl lactate; (3) the epoxidation of cyclooctene with aqueous hydrogen peroxide. The two nanosized Ga-MCM-41 materials show different catalytic behaviour in the various reactions, with the material prepared with lower Si/Ga displaying a higher versatility. This catalyst reaches higher turnover numbers compared to conventional Ga-MCM-41 reported in the literature. This result is ascribed to the higher specific surface area and to the shorter channels of the nanoparticles, which enhance the accessibility of the active sites.

Original languageEnglish
Pages (from-to)184-192
Number of pages9
JournalCatalysis Today
Volume235
DOIs
Publication statusPublished - 15 Oct 2014

Fingerprint

Multicarrier modulation
Nanoparticles
Catalysts
Trioses
Dihydroxyacetone
Gallium
Physisorption
Epoxidation
Acetone
Glycerol
Hydrogen peroxide
Specific surface area
Sugars
Hydrogen Peroxide
Energy dispersive spectroscopy
Nuclear magnetic resonance
MCM-41
Transmission electron microscopy
Atoms
Scanning electron microscopy

Keywords

  • Epoxidation
  • Ga-MCM-41
  • Glycerol
  • Heterogeneous catalyst
  • Lactate
  • Nanoparticles

Cite this

Collard, Xavier ; Li, Li ; Lueangchaichaweng, Warunee ; Bertrand, Arnaud ; Aprile, Carmela ; Pescarmona, Paolo P. / Ga-MCM-41 nanoparticles: Synthesis and application of versatile heterogeneous catalysts. In: Catalysis Today. 2014 ; Vol. 235. pp. 184-192.
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Ga-MCM-41 nanoparticles: Synthesis and application of versatile heterogeneous catalysts. / Collard, Xavier; Li, Li; Lueangchaichaweng, Warunee; Bertrand, Arnaud; Aprile, Carmela; Pescarmona, Paolo P.

In: Catalysis Today, Vol. 235, 15.10.2014, p. 184-192.

Research output: Contribution to journalArticle

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