Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO3/ZrO2 Mixed Oxide

高等学校化学研究 ›› 2006, Vol. 22 ›› Issue (3): 364-367.

Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide

SHI Wei, LIU Hai-yan, REN Dong-mei, MA Zhuo, SUN Wen-dong

Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China

收稿日期:2005-07-01 出版日期:2006-06-24 发布日期:2011-08-06
基金资助:
Supported by the Natural Science Foundation of Jilin Province(No. 20020665).

Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide

SHI Wei, LIU Hai-yan, REN Dong-mei, MA Zhuo, SUN Wen-dong

Faculty of Chemistry, Northeast Normal University, Changchun 130024, P. R. China

Received:2005-07-01 Online:2006-06-24 Published:2011-08-06
Supported by:
Supported by the Natural Science Foundation of Jilin Province(No. 20020665).

摘要/Abstract

摘要： A nanoporous MoO₃/ZrO₂ mixed oxide was hydrothermally synthesized by hydrolyzing zirconium isopropoxide in the presence of a cationic surfactant, cetyltrimethylammonium bromide(CTAB). The crystal structure and the acidity of the obtained nanoporous MoO₃/ZrO₂ mixed oxide were determined by means of XRD, N₂ adsorption-desorption and NH₃-TPD, respectively. The isobutane/butene alkylation over the MoO₃/ZrO₂ catalyst was carried out in a fixed bed reactor. The results reveal that ZrO₂ in MoO₃/ZrO₂ exists mainly in the tetragonal phase, and the catalyst samples possess large specific surface areas as well as moderate acidity for isobutane/butene alkylation. Compared with samples prepared by impregnation and sol-gel processes, MoO₃/ZrO₂ mixed oxide samples prepared in this work have a better catalytic activity.

关键词: MoO₃/ZrO₂, Hydrothermal synthesis, Solid acid catalyst, Alkylation

Abstract: A nanoporous MoO₃/ZrO₂ mixed oxide was hydrothermally synthesized by hydrolyzing zirconium isopropoxide in the presence of a cationic surfactant, cetyltrimethylammonium bromide(CTAB). The crystal structure and the acidity of the obtained nanoporous MoO₃/ZrO₂ mixed oxide were determined by means of XRD, N₂ adsorption-desorption and NH₃-TPD, respectively. The isobutane/butene alkylation over the MoO₃/ZrO₂ catalyst was carried out in a fixed bed reactor. The results reveal that ZrO₂ in MoO₃/ZrO₂ exists mainly in the tetragonal phase, and the catalyst samples possess large specific surface areas as well as moderate acidity for isobutane/butene alkylation. Compared with samples prepared by impregnation and sol-gel processes, MoO₃/ZrO₂ mixed oxide samples prepared in this work have a better catalytic activity.

Key words: MoO₃/ZrO₂, Hydrothermal synthesis, Solid acid catalyst, Alkylation

SHI Wei, LIU Hai-yan, REN Dong-mei, MA Zhuo, SUN Wen-dong. Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide[J]. 高等学校化学研究, 2006, 22(3): 364-367.

SHI Wei, LIU Hai-yan, REN Dong-mei, MA Zhuo, SUN Wen-dong. Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide[J]. Chemical Research in Chinese Universities, 2006, 22(3): 364-367.

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Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide

Hydrothermal Synthesis, Characterization and Catalytic Properties of Nanoporous MoO₃/ZrO₂ Mixed Oxide

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