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    題名: EFFECT OF MATRIX ON THE METAL POISONING OF REY CATALYSTS
    作者: YANG,SJ;CHEN,YW;LI,CP
    貢獻者: 化學工程與材料工程學系
    關鍵詞: CRACKING CATALYSTS;VANADIUM;ZEOLITES;NICKEL;DEPOSITION
    日期: 1995
    上傳時間: 2010-06-29 17:32:59 (UTC+8)
    出版者: 中央大學
    摘要: The effect of matrix on the resistance of vanadium and nickel poisoning of the REY zeolite has been investigated by X-ray diffraction, nitrogen adsorption, and n-hexane cracking reaction. Alumina (Al2O3), magnesia-alumina (MgO-Al2O3), alumina-aluminum phosphate (AAP), and magnesia-alumina-aluminum phosphate (MgAAP) were used as matrices of REY. The presence of matrix can increase the resistance of REY to steam deactivation. AAP has a better hydrothermal stability than the other matrics. MgO.Al2O3 matrix demonstrates the highest ability to capture vanadium due to the basicity of magnesia. There is an interaction between vanadium and nickel. This interaction inhibits the destruction of REY structure caused by vanadium. AAP has a strong interaction with nickel. The stronger the nickel-matrix interaction, the less poison effect of nickel. In addition, the strong interaction leads to the decrease in nickel's ability to retard the destruction of REY structure by vanadium.
    關聯: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
    顯示於類別:[化學工程與材料工程研究所] 期刊論文

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