Mixed metal oxide by calcination of layered double hydroxide: Parameters affecting specific surface area

Su Bin Lee, Eun Hye Ko, Joo Y. Park, Jae Min Oh

Research output: Contribution to journalReview articlepeer-review

38 Scopus citations

Abstract

Mixed metal oxide (MMO) is one of the widely utilized ceramic materials in various industries. In order to obtain high performance, the specific surface area of MMO should be controlled. Calcination of layered double hydroxide (LDH) is a versatile way to prepare MMO with homogeneous metal distribution and well-developed porosity. Although researchers found that the specific surface area of LDH-originated MMO was relatively high, it had not been systematically investigated how the surface area is controlled under a certain parameter. In this review, we summarized LDH-originated MMO with various starting composition, calcination temperature, and pore developing agent in terms of specific surface area and porosity. Briefly, it was represented that MMOs with Mg-Al components generally had higher specific surface area than Mg-Fe or Zn-Al components. Calcination temperature in the range 300–600C resulted in the high specific surface area, while upper or lower temperature reduced the values. Pore developing agent did not result in dramatic increase in MMO; however, the pore size distribution became narrower in the presence of pore developing agents.

Original languageEnglish
Article number1153
JournalNanomaterials
Volume11
Issue number5
DOIs
StatePublished - May 2021

Keywords

  • Calcination
  • Layered double hydroxide
  • Metal composition
  • Mixed metal oxide
  • Specific surface area

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