Selective oxidation of CO in the presence of propylene over Ag/MCM-41 catalyst

G. V. Mamontov, A. S. Gorbunova, E. V. Vyshegorodtseva, V. I. Zaikovskii, O. V. Vodyankina

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Ag/MCM-41 catalyst is prepared by impregnation technique and characterized by low-temperature N2 sorption, XRD, TPR and TEM methods. The ordered structure of mesoporous silicate MCM-41 is used as a nanoreactor to synthesize and stabilize small Ag nanoparticles. Two types of Ag particles are shown to form in Ag/MCM-41 catalyst: ultrasmall (<3 nm) inside pores of support and large (4–8 nm) on the external surface of the MCM-41. Catalytic tests in oxidation mixture containing 1% CO and 1% propylene show that Ag/MCM-41 catalyst can be used for selective oxidation of CO in the presence of propylene from 91 °C (CO conversion > 98%) to 217 °C (conversion of propylene < 5%). The catalyst can be used for purification of hydrocarbons from CO by selective oxidation of second.

Original languageEnglish
Pages (from-to)245-250
Number of pages6
JournalCatalysis Today
Volume333
DOIs
Publication statusPublished - 1 Aug 2019

Keywords

  • Ag/MCM-41 catalyst
  • Purification of propylene
  • Selective CO oxidation
  • Ultrasmall Ag particles
  • SILVER
  • MOLECULAR-SIEVES
  • MCM-41
  • ADSORPTION
  • PRETREATMENT CONDITIONS
  • PREFERENTIAL OXIDATION
  • AG/SIO2 CATALYSTS
  • CARBON-MONOXIDE OXIDATION
  • RECENT PROGRESS
  • ETHYLENE HYDROGENATION

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