Improving textural properties of γ-alumina by using second generation biomass in conventional hydrothermal method

Cristiane S. Cardoso, Yordy E. Licea, Xing Huang, Marc Willinger, Benoit Louis, Marcelo M. Pereira

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The present study reports a simple and inexpensive method for improving the textural properties and stability of γ-alumina by adding crushed sugar cane bagasse to the synthesis gel (highly crystalline bayerite was used as an aluminum source). The influence of bagasse was evaluated by varying the biomass/bayerite ratio from 0.05 to 1 wt%. The presence of bagasse increased both surface area and pore volume up to 2.5-fold and 1.5-fold respectively. In addition, mesopores with a mean diameter of 5 nm were observed, which were further increased to 6 nm using hydrolyzed biomass prior to the synthesis. HRTEM measurements highlighted that the presence of biomass raised the formation of pores by enclosure of (111) and (002) lattice planes.

Original languageEnglish
Pages (from-to)134-141
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume207
DOIs
StatePublished - 1 May 2015
Externally publishedYes

Keywords

  • Alumina
  • Biomass
  • Hydrothermal synthesis
  • Mesopores

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