Effect of Matrix on the Metal Poisoning of REY Catalysts

Shien Jen Yang; Yu Wen Chen; Chiuping Li

doi:10.1021/ie00043a014

Effect of Matrix on the Metal Poisoning of REY Catalysts

Shien Jen Yang, Yu Wen Chen, Chiuping Li

Department of Chemical and Materials Engineering

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

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 (A1₂O₃), magnesia-alumina (MgO-Al₂03), 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. MgOAl₂O₃ 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.

Original language	English
Pages (from-to)	1126-1131
Number of pages	6
Journal	Industrial and Engineering Chemistry Research
Volume	34
Issue number	4
DOIs	https://doi.org/10.1021/ie00043a014
State	Published - 1 Apr 1995

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title = "Effect of Matrix on the Metal Poisoning of REY Catalysts",

abstract = "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 (A12O3), magnesia-alumina (MgO-Al203), 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. MgOAl2O3 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{\textquoteright}s ability to retard the destruction of REY structure by vanadium.",

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N2 - 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 (A12O3), magnesia-alumina (MgO-Al203), 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. MgOAl2O3 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.

AB - 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 (A12O3), magnesia-alumina (MgO-Al203), 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. MgOAl2O3 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.

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Effect of Matrix on the Metal Poisoning of REY Catalysts

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