Effects of Phosphorus on modification of HZSM-5 zeolite synthesized with different framework aluminum distribution in catalytic transformation of LPG to light olefins

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ABBASIZADEH SAEED; KARIMZADEH RAMIN

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Journal: FUEL AND COMBUSTION Year:2019 | Volume:11 | Issue:4 Page(s): 101-116

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Title

Effects of Phosphorus on modification of HZSM-5 zeolite synthesized with different framework aluminum distribution in catalytic transformation of LPG to light olefins

Author(s)

ABBASIZADEH SAEED | KARIMZADEH RAMIN | Issue Writer Certificate

Keywords

LPGQ1

Aluminum DistributionQ1

HZSM-5Q1

Single AluminumQ1

PhosphorusQ1

Light OlefinQ1

Abstract

In this work, HZSM-5 zeolites with aluminum nitrate and aluminum hydroxide and Si/Al ratio 20 were synthesized and the effect of framework Aluminum Distribution on modification of HZSM-5 with phosphorous were investigated in catalytic cracking of LPG. The prepared catalysts were characterized by XRay Diffraction, Field Emission Scanning Electron Microscopy, Nitrogen Adsorption-desorption, X-Ray Fluorescence and NH3-Temperature Programmed Desorption analyses. Aluminum Distribution in the framework of HZSM-5 was determined by chemical analysis of X-Ray Fluorescence and reflectance UVVisible analyses. The highest proportion of single Al atoms was found to be 90. 6% for HZAM-5 synthesized with aluminum nitrate and the highest proportion of close Al atoms in the zeolite framework was 47. 8% for HZAM-5 synthesized with aluminum hydroxide. The catalytic cracking tests showed that the catalytic stability and the olefin yield in LPG cracking for HZAM-5 synthesized with aluminum nitrate, were greater than those of HZAM-5 synthesized with aluminum hydroxide. After 240 min, the olefin yield just decreased from 49. 8% to 41. 5% for P/HZSM-5 synthesized with higher single Al atoms. Also, the propylene to ethylene ratio, yield of C5+ heavy products, coke percent and deactivation rate for P/HZSM-5(Nitrate) catalyst were determined to be 0. 986, 2%, 6% and 21. 31%, respectively.

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APA: Copy

ABBASIZADEH, SAEED, & KARIMZADEH, RAMIN. (2019). Effects of Phosphorus on modification of HZSM-5 zeolite synthesized with different framework aluminum distribution in catalytic transformation of LPG to light olefins. FUEL AND COMBUSTION, 11(4 ), 101-116. SID. https://sid.ir/paper/138507/en

Vancouver: Copy

ABBASIZADEH SAEED, KARIMZADEH RAMIN. Effects of Phosphorus on modification of HZSM-5 zeolite synthesized with different framework aluminum distribution in catalytic transformation of LPG to light olefins. FUEL AND COMBUSTION[Internet]. 2019;11(4 ):101-116. Available from: https://sid.ir/paper/138507/en

IEEE: Copy

SAEED ABBASIZADEH, and RAMIN KARIMZADEH, “Effects of Phosphorus on modification of HZSM-5 zeolite synthesized with different framework aluminum distribution in catalytic transformation of LPG to light olefins,” FUEL AND COMBUSTION, vol. 11, no. 4 , pp. 101–116, 2019, [Online]. Available: https://sid.ir/paper/138507/en

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