The performance of Pt/ZrxTixAl1-2xO2 as Kerosene cracking catalysts

doi:10.1016/S1872-2067(12)60732-2

Abstract

Abstract:

Zr_xTi_xAl_1-2xO₂ composite oxides for use as supports were prepared by coprecipitation and assessed with regard to their catalytic performance during the kerosene cracking reaction. The catalysts were characterized by N₂ adsorption-desorption, scanning electron microscopy-energy dispersive spectrometry, X-ray diffraction, and temperature-programmed desorption (NH₃-TPD). The results showed that a support composed of ZrO₂:TiO₂:Al₂O₃ in the ratio of 1:1:3 exhibited the highest surface area and pore volume, and had the strongest surface acidity and highest acidic density. Energy dispersive spectroscopy results showed that catalysts from which carbon deposits were removed by heating under oxygen changed very little, and additional experimental data confirmed that these catalysts are readily regenerated while retaining their functionality. The gaseous reaction products produced over ZrO₂:TiO₂:Al₂O₃ (1:1:3)-supported Pt catalyst generated during catalytic cracking was 2.1 times and 1.4 times higher than that obtained with thermal cracking at 650 ℃ and 700 ℃, respectively. An examination of the catalytic performance of Pt catalyst supported on composite oxides calcined at 1000 ℃ for 5 h indicated that these materials lost much of their catalytic activity.

Key words: Zr_xTi_xAl_1-2xO₂ composite oxides, Pipe coating, Catalytic cracking, Endothermic fuel, Acidity

Yi Jiao, Jianli Wang, Quan Zhu, Xiangyuan Li, Yaoqiang Chen. The performance of Pt/Zr_xTi_xAl_1-2xO₂ as Kerosene cracking catalysts[J]. Chinese Journal of Catalysis, 2014, 35(2): 175-184.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(12)60732-2

https://www.cjcatal.com/EN/Y2014/V35/I2/175

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The performance of Pt/Zr_xTi_xAl_1-2xO₂ as Kerosene cracking catalysts

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