Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide

Alinda Samsuri, Fairous Salleh, Tengku Shafazila Tengku Saharuddin, Rizafizah Othaman, Mohammad Wahab Mohammad Hisham, Mohd. Ambar Yarmo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The reduction behavior of silver doped molybdenum trioxide (Ag/MoO3) and undoped MoO3 by using carbon monoxide, CO were investigated by using temperature programmed reduction (TPR). The reduced phases were characterized by X-ray diffraction (XRD). In the carbon monoxide atmosphere, the XRD results indicated that the reduction of Ag/MoO3 and undoped MoO3 to MoO2 phase proceed in two steps (MoO3 → Mo4O11 → MoO2) with Mo4O11 present as an intermediate state. A complete reduction to metallic molybdenum for both samples cannot occur since in an excess CO atmosphere, MoO2 is promoted to form carbides rather than reduce to metallic molybdenum. Nevertheless, addition of silver to modified MoO3 shows the better reducibility compared to MoO3 alone by lower the reducing temperature of MoO3. TPR results show that the reduction peak of Ag/MoO3 is slightly shifts to lower temperature as compared with the undoped MoO3. The interaction between silver and molybdenum ions leads to this slightly decrease of the reduction temperature of silver doped MoO3. It can be seen that doping with silver has a remarkable influence in the reduction process of the MoO3 catalyst.

Original languageEnglish
Title of host publicationCurrent Material Research Using X-Rays and Related Techniques II
PublisherTrans Tech Publications Ltd
Pages377-381
Number of pages5
Volume888 MSF
ISBN (Print)9783035710298
DOIs
Publication statusPublished - 2017
EventInternational Conference on X-Rays and Related Techniques in Research and Industry, ICXRI 2016 - Putrajaya, Malaysia
Duration: 17 Aug 201618 Aug 2016

Publication series

NameMaterials Science Forum
Volume888 MSF
ISSN (Print)02555476

Other

OtherInternational Conference on X-Rays and Related Techniques in Research and Industry, ICXRI 2016
CountryMalaysia
CityPutrajaya
Period17/8/1618/8/16

Fingerprint

Molybdenum oxide
molybdenum oxides
Carbon Monoxide
Precious metals
noble metals
Silver
Carbon monoxide
carbon monoxide
silver
Molybdenum
molybdenum
Temperature
atmospheres
X ray diffraction
temperature
molybdenum trioxide
diffraction
carbides
Carbides
x rays

Keywords

  • Carbon monoxide
  • Molybdenum oxide
  • Reduction
  • Silver

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Samsuri, A., Salleh, F., Tengku Saharuddin, T. S., Othaman, R., Mohammad Hisham, M. W., & Yarmo, M. A. (2017). Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide. In Current Material Research Using X-Rays and Related Techniques II (Vol. 888 MSF, pp. 377-381). (Materials Science Forum; Vol. 888 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.888.377

Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide. / Samsuri, Alinda; Salleh, Fairous; Tengku Saharuddin, Tengku Shafazila; Othaman, Rizafizah; Mohammad Hisham, Mohammad Wahab; Yarmo, Mohd. Ambar.

Current Material Research Using X-Rays and Related Techniques II. Vol. 888 MSF Trans Tech Publications Ltd, 2017. p. 377-381 (Materials Science Forum; Vol. 888 MSF).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Samsuri, A, Salleh, F, Tengku Saharuddin, TS, Othaman, R, Mohammad Hisham, MW & Yarmo, MA 2017, Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide. in Current Material Research Using X-Rays and Related Techniques II. vol. 888 MSF, Materials Science Forum, vol. 888 MSF, Trans Tech Publications Ltd, pp. 377-381, International Conference on X-Rays and Related Techniques in Research and Industry, ICXRI 2016, Putrajaya, Malaysia, 17/8/16. https://doi.org/10.4028/www.scientific.net/MSF.888.377
Samsuri A, Salleh F, Tengku Saharuddin TS, Othaman R, Mohammad Hisham MW, Yarmo MA. Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide. In Current Material Research Using X-Rays and Related Techniques II. Vol. 888 MSF. Trans Tech Publications Ltd. 2017. p. 377-381. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.888.377
Samsuri, Alinda ; Salleh, Fairous ; Tengku Saharuddin, Tengku Shafazila ; Othaman, Rizafizah ; Mohammad Hisham, Mohammad Wahab ; Yarmo, Mohd. Ambar. / Effect of noble metal silver on the reduction behaviour of molybdenum oxide using carbon monoxide. Current Material Research Using X-Rays and Related Techniques II. Vol. 888 MSF Trans Tech Publications Ltd, 2017. pp. 377-381 (Materials Science Forum).
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