Factors influencing the performance of naphtha hydro-desulfurization catalysts

Jamal A. Anabtawi; Syed A. Ali; M. Abdul Bari Siddiqui; S. M. Javaid Zaidi

doi:10.1016/S0167-2991(96)80023-1

Factors influencing the performance of naphtha hydro-desulfurization catalysts

Jamal A. Anabtawi, Syed A. Ali, M. Abdul Bari Siddiqui, S. M. Javaid Zaidi

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Abstract

The performance of the two CoMo catalysts was evaluated for hydrodesulfurization of two Saudi naphthas in a bench-scale unit under Industrial conditions. Various types of sulfur compounds in the naphtha feed stocks and products were determined by chemical analysis and gas chromatography. The results show that the product sulfur decreased with increasing temperature down to a minimum, followed by an increase at higher temperatures. This increase was attributed to the occurrence of H₂S-alkene recombination reaction leading to the formation of mercaptans. The effect of increasing the space velocity was to slightly increase product sulfur, while the hydrogen gas rate had an insignificant effect. The product sulfur for the two catalysts was below 1 ppm in the temperature range 280–350°C. However, one catalyst was selected based on its superior HDS performance attributed to higher concentrations of molybdenum, cobalt and phosphorus oxides.

Original language	English
Pages (from-to)	225-234
Number of pages	10
Journal	Studies in Surface Science and Catalysis
Volume	100
Issue number	C
DOIs	https://doi.org/10.1016/S0167-2991(96)80023-1
State	Published - 1 Jan 1996

ASJC Scopus subject areas

Catalysis
Condensed Matter Physics
Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/S0167-2991(96)80023-1

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title = "Factors influencing the performance of naphtha hydro-desulfurization catalysts",

abstract = "The performance of the two CoMo catalysts was evaluated for hydrodesulfurization of two Saudi naphthas in a bench-scale unit under Industrial conditions. Various types of sulfur compounds in the naphtha feed stocks and products were determined by chemical analysis and gas chromatography. The results show that the product sulfur decreased with increasing temperature down to a minimum, followed by an increase at higher temperatures. This increase was attributed to the occurrence of H2S-alkene recombination reaction leading to the formation of mercaptans. The effect of increasing the space velocity was to slightly increase product sulfur, while the hydrogen gas rate had an insignificant effect. The product sulfur for the two catalysts was below 1 ppm in the temperature range 280–350°C. However, one catalyst was selected based on its superior HDS performance attributed to higher concentrations of molybdenum, cobalt and phosphorus oxides.",

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AU - Anabtawi, Jamal A.

AU - Ali, Syed A.

AU - Abdul Bari Siddiqui, M.

AU - Javaid Zaidi, S. M.

PY - 1996/1/1

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AB - The performance of the two CoMo catalysts was evaluated for hydrodesulfurization of two Saudi naphthas in a bench-scale unit under Industrial conditions. Various types of sulfur compounds in the naphtha feed stocks and products were determined by chemical analysis and gas chromatography. The results show that the product sulfur decreased with increasing temperature down to a minimum, followed by an increase at higher temperatures. This increase was attributed to the occurrence of H2S-alkene recombination reaction leading to the formation of mercaptans. The effect of increasing the space velocity was to slightly increase product sulfur, while the hydrogen gas rate had an insignificant effect. The product sulfur for the two catalysts was below 1 ppm in the temperature range 280–350°C. However, one catalyst was selected based on its superior HDS performance attributed to higher concentrations of molybdenum, cobalt and phosphorus oxides.

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JO - Studies in Surface Science and Catalysis

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Factors influencing the performance of naphtha hydro-desulfurization catalysts

Abstract

ASJC Scopus subject areas

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