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Citation: SUN Wen Dong, ZHAO Zhen Bo, WU Yue. Studies of Catalysts for Isobutane Alkylation With Butene Ⅳ.Zr(SO₄)₂ and Zr(SO₄)₂/Al₂O₃(SiO₂)[J]. Chinese Journal of Applied Chemistry, ;2000, 17(5): 465-470. shu

Studies of Catalysts for Isobutane Alkylation With Butene Ⅳ.Zr(SO₄)₂ and Zr(SO₄)₂/Al₂O₃(SiO₂)

1.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received Date: 10 January 2000
Available Online: 27 April 2000
Fund Project: 国家自然科学基金资助项目(29792076) (29792076)

A series of strong solid-acid catalysts Zr(SO₄)₂ calcined at different temperatures and supported Zr(SO₄)₂/Al₂O₃(or SiO₂) were prepared. The effects of supporter and calcination temperature on the crystal form, structure, specific surface, acid content and acid strength of the catalysts were investigated by XRD, IR, BET, specific surface, TG-DTA, NH₃-TPD and the Hammett indicator measurements. The results showed that as a supporter Al₂O₃ could obviously retard the decomposition of Zr(SO₄)₂, crystal phase transform of ZrO₂ and considerably increase the acid content and acid strength of the catalysts. In the alkylation of isobutane with butenes the Zr(SO₄)₂ catalyst samples calcined at 913 and 1023 K showed the best activity and for supported catalyst Zr(SO₄)₂/Al₂O₃ the best activity was achieved when m (Zr(SO₄)₂)/m(Al₂O₃)=0.5~1.0. All of the catalysts revealed good selectivity for C₈⁰.
- zirconium sulfate,
- strong solid acid,
- isobutane alkylation
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Studies of Catalysts for Isobutane Alkylation With Butene Ⅳ.Zr(SO4)2 and Zr(SO4)2/Al2O3(SiO2)

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Studies of Catalysts for Isobutane Alkylation With Butene Ⅳ.Zr(SO₄)₂ and Zr(SO₄)₂/Al₂O₃(SiO₂)