Synthesis of mesoporous chromium phosphates via solid-state reaction at low temperature

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Qi Liu
  • Hao He
  • Zi-Sheng Chao
  • Jian Xie
  • Eli Ruchenstein

Detail(s)

Original languageEnglish
Pages (from-to)139-147
Journal / PublicationNew Journal of Chemistry
Volume36
Issue number1
Online published15 Nov 2011
Publication statusPublished - Jan 2012
Externally publishedYes

Abstract

Using solid-state reaction at low temperature (SSRLT), mesoporous chromium phosphates were successfully synthesized in the presence of a surfactant template, cetyltrimethyl ammonium bromide (CTAB), at a temperature of 353 K without using a water solvent. The synthesized chromium phosphates were characterized by XRD, EDS, HR-TEM, N2-physisorption, TGA-DSC, FT-IR, and UV-vis spectroscopies. It was found that mesoporous chromium phosphate can be formed only at atomic ratios of P/Cr ≥ 1.8. The mesophase at P/Cr = 2.0 showed the highest ordering of pore arrays, with a specific surface area as high as 250.78 m2 g-1 and an average pore size of 3.48 nm. The catalytic performance of the synthesized chromium phosphates was examined using the dehydration of isopropanol to propene as the model reaction. The results indicated that the mesoporous chromium phosphates synthesized via the SSRLT route exhibited significantly higher isopropanol conversions and propene yields than that synthesized via the solution sol-gel route and the non-mesoporous chromium phosphate. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

Citation Format(s)

Synthesis of mesoporous chromium phosphates via solid-state reaction at low temperature. / Liu, Qi; He, Hao; Chao, Zi-Sheng et al.
In: New Journal of Chemistry, Vol. 36, No. 1, 01.2012, p. 139-147.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review