Renewable hydrogen production from steam reforming of glycerol (SRG) over ceria-modified γ-alumina supported Ni catalyst

Ammaru Ismaila, Huanhao Chen, Yan Shao, Shaojun Xu, Yilai Jiao, Xueli Chen, Xin Gao, Xiaolei Fan

Research output: Journal PublicationArticlepeer-review

7 Citations (Scopus)

Abstract

Excess crude glycerol derived as a by-product from biodiesel industry prompts the need to valorise glycerol to value-added chemicals. In this context, catalytic steam reforming of glycerol (SRG) was proposed as a promising and sustainable alternative for producing renewable hydrogen (H2). Herein, the development of nickel (Ni) supported on ceria-modified mesoporous γ-alumina (γ-Al2O3) catalysts and their applications in catalytic SRG (at 550–750 °C, atmospheric pressure and weight hourly space velocity, WHSV, of 44,122 ml·g−1·h−1 (STP)) is presented. Properties of the developed catalysts were characterised using many techniques. The findings show that ceria modification improved Ni dispersion on γ-Al2O3 catalyst support with highly active small Ni particles, which led to a remarkable catalytic performance with the total glycerol conversion (ca. 99%), glycerol conversion into gaseous products (ca. 77%) and H2 yield (ca. 62%). The formation rate for H2 production (14.4 × 10−5 mol·s−1·g−1, TOF (H2) = 3412 s−1) was significantly improved with the Ni@12Ce-Al2O3 catalyst, representing nearly a 2-fold increase compared with that of the conventional Ni@Al2O3 catalyst. In addition, the developed catalyst also exhibited comparatively high stability (for 12 h) and coke resistance ability.

Original languageEnglish
Pages (from-to)2328-2336
Number of pages9
JournalChinese Journal of Chemical Engineering
Volume28
Issue number9
DOIs
Publication statusPublished - Sep 2020
Externally publishedYes

Keywords

  • Ceria
  • Hydrogen (H)
  • Nickel (Ni) catalysts
  • Steam reforming of glycerol (SRG)
  • γ-Alumina (γ-AlO)

ASJC Scopus subject areas

  • Environmental Engineering
  • Biochemistry
  • Chemistry (all)
  • Chemical Engineering (all)

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