Glycerol acetylation on mesoporous KIL-2 supported sulphated zirconia catalysts

Margarita Popova, A. Szegedi, Alenka Ristić, Nataša Novak Tušar

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Zirconia nanomaterials were prepared by impregnation of KIL-2 type silica with 4, 8 and 12 wt.% ZrO2 and were modified by sulphate groups in order to vary the type and strength of acidity. Samples were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), and N2 physisorption methods. Acidic properties of adsorbed pyridine were investigated by FT-IR spectroscopy. The catalytic performance of ZrKIL-2 and SO42-/ZrKIL-2 in glycerol esterification with acetic acid was studied and compared to that of pure zirconia varieties. It was found that silica-supported zirconia samples are more active than pure zirconia ones. With increasing ZrO2 content, KIL-2-supported catalysts showed increasing catalytic activity and selectivity in producing valuable fuel additives, di- and triacetyl glycerols. Sulphated analogues showed even higher activity and selectivity compared to non-sulphated ones due to their strong Brönsted acidity.

Original languageEnglish
Pages (from-to)3993-4000
Number of pages8
JournalCatalysis Science and Technology
Volume4
Issue number11
DOIs
Publication statusPublished - Nov 1 2014

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Acetylation
Glycerol
Zirconia
Catalysts
Acidity
Silicon Dioxide
Triacetin
Silica
Fuel additives
Diacetyl
Physisorption
Catalyst selectivity
Esterification
Catalyst supports
Nanostructured materials
Acetic acid
Impregnation
Acetic Acid
Pyridine
X ray powder diffraction

ASJC Scopus subject areas

  • Catalysis

Cite this

Glycerol acetylation on mesoporous KIL-2 supported sulphated zirconia catalysts. / Popova, Margarita; Szegedi, A.; Ristić, Alenka; Tušar, Nataša Novak.

In: Catalysis Science and Technology, Vol. 4, No. 11, 01.11.2014, p. 3993-4000.

Research output: Contribution to journalArticle

Popova, Margarita ; Szegedi, A. ; Ristić, Alenka ; Tušar, Nataša Novak. / Glycerol acetylation on mesoporous KIL-2 supported sulphated zirconia catalysts. In: Catalysis Science and Technology. 2014 ; Vol. 4, No. 11. pp. 3993-4000.
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