Synthesis, characterization and activity pattern of carbon nanofibers based copper/zirconia catalysts for carbon dioxide hydrogenation to methanol: Influence of calcination temperature

  • Israf Ud Din
  • , Maizatul S. Shaharun
  • , Duvvuri Subbarao
  • , A. Naeem

Research output: Contribution to journalArticlepeer-review

84 Scopus citations

Abstract

A series of novel carbon nanofibers (CNFs) supported bimetallic copper/zirconia catalysts are synthesized by deposition precipitation method and calcined at different temperatures. Calcined catalysts are characterized by various techniques like X-ray diffraction, N2 adsorption-desorption, N2O chemisorption, high resolution transmission electron microscopy, temperature programmed reduction, X-ray photoelectron spectroscopy and temperature programmed desorption (CO2 & NH3). The structure-activity correlation is discussed in details. The results demonstrate 450 °C as optimum calcination temperature for methanol synthesis rate with CO2/H2 feed volume ratio of 1:3. CO2 conversion is found to be directly proportional to copper metallic surface area (SCu), while a linear relationship is observed between methanol synthesis rate and fraction of dispersed Cu.

Original languageEnglish
Pages (from-to)619-628
Number of pages10
JournalJournal of Power Sources
Volume274
DOIs
StatePublished - 15 Jan 2015
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 13 - Climate Action
    SDG 13 Climate Action

Keywords

  • Carbon dioxide conversion
  • Carbon nanofibers
  • Copper based catalysts
  • Methanol synthesis
  • Slurry reactor

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