Structure-reactivity correlations in sulphated-zirconia catalysts for the isomerisation of α-pinene

Muriel A. Ecormier; Karen Wilson; Adam F. Lee

doi:10.1016/S0021-9517(02)00150-1

Structure-reactivity correlations in sulphated-zirconia catalysts for the isomerisation of α-pinene

Muriel A. Ecormier
, Karen Wilson
, Adam F. Lee

Research output: Contribution to journal › Article › peer-review

111 Citations (SciVal)

Abstract

A range of mesoporous sulphated zirconias with tuneable structural and catalytic properties have been prepared by direct impregnation. The surface sulphate coverage can be readily varied, achieving a maximum value of ∼0.2 monolayers. High-temperature calcination induces the crystallisation of tetragonal zirconia while suppressing the monoclinic phase and enhances surface acidity. Superacid sites only appear above a critical threshold SO₄ coverage of 0.08 mL (corresponding to 0.44 wt% total S). Sulphated zirconias show good activity towards α-pinene isomerisation of under mild conditions. Conversion correlates with the number Brønsted acid sites, while the selectivity towards mono- versus polycyclic products depends on the corresponding acid site strength; superacidity promotes limonene formation over camphene.

Original language	English
Pages (from-to)	57-65
Number of pages	9
Journal	Journal of Catalysis
Volume	215
Issue number	1
Early online date	19 Mar 2003
DOIs	https://doi.org/10.1016/S0021-9517(02)00150-1
Publication status	Published - 1 Apr 2003

Keywords

solid acid catalysts
clean technology
green chemistry
zirconia
α-pinene

Access to Document

10.1016/S0021-9517(02)00150-1

Cite this

@article{db5d367a78ad482488a3f0928f66a59d,

title = "Structure-reactivity correlations in sulphated-zirconia catalysts for the isomerisation of α-pinene",

abstract = "A range of mesoporous sulphated zirconias with tuneable structural and catalytic properties have been prepared by direct impregnation. The surface sulphate coverage can be readily varied, achieving a maximum value of ∼0.2 monolayers. High-temperature calcination induces the crystallisation of tetragonal zirconia while suppressing the monoclinic phase and enhances surface acidity. Superacid sites only appear above a critical threshold SO4 coverage of 0.08 mL (corresponding to 0.44 wt\% total S). Sulphated zirconias show good activity towards α-pinene isomerisation of under mild conditions. Conversion correlates with the number Br{\o}nsted acid sites, while the selectivity towards mono- versus polycyclic products depends on the corresponding acid site strength; superacidity promotes limonene formation over camphene.",

keywords = "solid acid catalysts, clean technology, green chemistry, zirconia, α-pinene",

author = "Ecormier, \{Muriel A.\} and Karen Wilson and Lee, \{Adam F.\}",

year = "2003",

month = apr,

day = "1",

doi = "10.1016/S0021-9517(02)00150-1",

language = "English",

volume = "215",

pages = "57--65",

journal = "Journal of Catalysis",

issn = "0021-9517",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Structure-reactivity correlations in sulphated-zirconia catalysts for the isomerisation of α-pinene

AU - Ecormier, Muriel A.

AU - Wilson, Karen

AU - Lee, Adam F.

PY - 2003/4/1

Y1 - 2003/4/1

N2 - A range of mesoporous sulphated zirconias with tuneable structural and catalytic properties have been prepared by direct impregnation. The surface sulphate coverage can be readily varied, achieving a maximum value of ∼0.2 monolayers. High-temperature calcination induces the crystallisation of tetragonal zirconia while suppressing the monoclinic phase and enhances surface acidity. Superacid sites only appear above a critical threshold SO4 coverage of 0.08 mL (corresponding to 0.44 wt% total S). Sulphated zirconias show good activity towards α-pinene isomerisation of under mild conditions. Conversion correlates with the number Brønsted acid sites, while the selectivity towards mono- versus polycyclic products depends on the corresponding acid site strength; superacidity promotes limonene formation over camphene.

AB - A range of mesoporous sulphated zirconias with tuneable structural and catalytic properties have been prepared by direct impregnation. The surface sulphate coverage can be readily varied, achieving a maximum value of ∼0.2 monolayers. High-temperature calcination induces the crystallisation of tetragonal zirconia while suppressing the monoclinic phase and enhances surface acidity. Superacid sites only appear above a critical threshold SO4 coverage of 0.08 mL (corresponding to 0.44 wt% total S). Sulphated zirconias show good activity towards α-pinene isomerisation of under mild conditions. Conversion correlates with the number Brønsted acid sites, while the selectivity towards mono- versus polycyclic products depends on the corresponding acid site strength; superacidity promotes limonene formation over camphene.

KW - solid acid catalysts

KW - clean technology

KW - green chemistry

KW - zirconia

KW - α-pinene

UR - https://www.scopus.com/pages/publications/0141678124

U2 - 10.1016/S0021-9517(02)00150-1

DO - 10.1016/S0021-9517(02)00150-1

M3 - Article

AN - SCOPUS:0141678124

SN - 0021-9517

VL - 215

SP - 57

EP - 65

JO - Journal of Catalysis

JF - Journal of Catalysis

IS - 1

ER -

Structure-reactivity correlations in sulphated-zirconia catalysts for the isomerisation of α-pinene

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this