Benzaldehyde reduction over Cu-MCM-41 catalyst: Influence of the Si/Cu ratio during hydrothermal synthesis on the structure and catalytic properties

Mohammed Sadou, Adel Saadi, Mohammed Hadj Meliani, Rami K. Suleiman, Tawfik A. Saleh*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This work aims to evaluate the catalytic performances of mesoporous MCM-41 materials modified by the insertion of a copper heteroatom in the Gas-phase reduction of benzaldehyde under hydrogen flow. The catalysts were synthesized by the hydrothermal method and characterized by AAS, XRD, FTIR, and N2-physical adsorption/desorption techniques to improve controlling the entire functionalization sequence of materials. It was established that the hexagonal structure of MCM-41 displays good crystallinity due to the presence of the characteristic peak of this structure. The introduction of a metallic element such as copper in the structure of MCM-41 showed a more or less significant modification of the structural and textural properties. The performed catalytic properties in a reaction temperature range of 160–250 °C showed that the Cu-MCM-41 catalysts were stable and led to good benzaldehyde conversion rates ranging between 0 and 31%. Benzyl alcohol and toluene were obtained through consecutive hydrogenation/hydrogenolysis reactions, while benzene was formed via a concomitant hydrogenolysis reaction. The yields of the obtained hydrogenation and hydrogenolysis products (benzyl alcohol, toluene, and benzene) were highly dependent on the copper content and reaction temperature.

Original languageEnglish
Article number110750
JournalInorganic Chemistry Communication
Volume153
DOIs
StatePublished - Jul 2023

Bibliographical note

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

  • Benzaldehyde
  • Copper
  • Hydrogen flow
  • Hydrothermal synthesis
  • MCM-41
  • Mesoporous material

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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