Preparation and Structure Characterization of a Mesoporous Solid Superacid Catalyst SO42-/Zr-HMS

Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (3): 469.

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Preparation and Structure Characterization of a Mesoporous Solid Superacid Catalyst SO₄^2-/Zr-HMS

LIAO Shi-Jun¹, JI Shan¹, JIAN Qi-Fei¹, WANG Le-Fu¹, Vladimir Linkov², Leslie Petrik²

1. Department of Applied Chemistry, South China University of Technology, Guangzhou 510640, China;
2. Department of Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa

Received:2002-04-29 Online:2003-03-24 Published:2003-03-24

Abstract

Abstract: A mesoporous solid superacid catalyst, SO₄^2-/Zr-HMS, was prepared by sulfating the mesoporous Zr-HMS, which was synthesized from TEOS-zrconium-HDA-H₂O-ethanol system, with aqueous solution of 0.5 mol/L H₂SO₄ followed by calcining at 550 ℃ for 3 h in static air. The structure of catalyst was characterized by XRD, and the acidity of the catalyst was investigated by Hammit indicator method, TG and NH₃-TPD. It is shown that the catalyst SO₄^2-/Zr-HMS possesses the structure of HMS and with the acid strength by -13.75(H₀). The catalytic activity of SO₄^2-/Zr-HMS in the esterification of phthalic anhydride with butanol is higher than that of SO₄^2-/ZrO₂.

Key words: Mesoporous zeolite, Superacid, Preparation, Characterization

CLC Number:

O643.1

TrendMD:

LIAO Shi-Jun, JI Shan, JIAN Qi-Fei, WANG Le-Fu, Vladimir Linkov, Leslie Petrik . Preparation and Structure Characterization of a Mesoporous Solid Superacid Catalyst SO₄^2-/Zr-HMS[J]. Chem. J. Chinese Universities, 2003, 24(3): 469.

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Preparation and Structure Characterization of a Mesoporous Solid Superacid Catalyst SO₄^2-/Zr-HMS

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