CO2 reforming of glycerol over La-Ni/Al2O3 catalyst: A longevity evaluative study

Kah Weng Siew, Hua Chyn Lee, Maksudur R. Khan, Jolius Gimbun, Chin Kui Cheng

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

This paper reports on the longevity of glycerol-dry (CO2) reforming over the lanthanum (La) promoted Ni/Al2O3 catalysts. The XRD results showed that the Ni particle was well-dispersed in the presence of La promoter. In addition, via the NH3-TPD analysis, it was found that the La promoter has reduced the acidity of Ni catalyst which may have explained the mitigation of carbon laydown. It was determined that the 3.0 wt% La-promoted Ni/Al2O3 catalyst possessed the largest BET specific surface area of 97 m2·g-1. Consequently, it yielded the best catalytic longevity performance with conversion attained more than 90%, even after 72 h of reaction duration. Significantly, it can be confirmed that the presence of CO2 during the glycerol dry reforming was essential in reducing carbon deposition, most likely via gasification pathway. This has ensured a stability of catalytic activity for a long reaction period (72 h).

Original languageBritish English
Pages (from-to)366-373
Number of pages8
JournalJournal of Energy Chemistry
Volume24
Issue number3
DOIs
StatePublished - 1 May 2015

Keywords

  • CO reforming
  • glycerol
  • lanthanum
  • longevity
  • syngas

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