Pt/Al-SBA-15 catalysts for hydrocracking of C21-C34 n-paraffin mixture into gasoline and diesel fractions

Myung Gi Seo, Dae Won Lee, Kwan Young Lee, Dong Ju Moon

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

In this study, a Pt-loaded mesoporous aluminosilicate (Pt/Al-SBA-15) was optimized as a catalyst for the hydrocracking of Fischer-Tropsch waxes, for which n-paraffin wax in the C21-34 range was used as a model reactant. Pt/Al-SBA-15 was more active than a Pt-loaded microporous zeolite (Pt/β-zeolite) in producing gasoline-range products from n-paraffin wax. Hydrocracking over Pt/Al-SBA-15 occurs via a bifunctional mechanism, the activity of which was correlated closely with the density (concentration) of strong acid sites and total exposed Pt surface area. The reaction was more noticeably promoted at the Brønsted acid sites, rather than at the Lewis acid sites, of Al-SBA-15. The highest gasoline yield (72.8%) was achieved with the catalyst comprised of 0.5 wt.% Pt and Al-SBA-15 with Si/Al molar ratio of 14.5.

Original languageEnglish
Pages (from-to)63-71
Number of pages9
JournalFuel
Volume143
DOIs
Publication statusPublished - 2015 Mar 1

Fingerprint

Paraffin waxes
Hydrocracking
Paraffin
Paraffins
Gasoline
Catalysts
Acids
Aluminosilicates
Zeolites
Lewis Acids
Waxes
SBA-15

ASJC Scopus subject areas

  • Fuel Technology
  • Energy Engineering and Power Technology
  • Chemical Engineering(all)
  • Organic Chemistry

Cite this

Pt/Al-SBA-15 catalysts for hydrocracking of C21-C34 n-paraffin mixture into gasoline and diesel fractions. / Seo, Myung Gi; Lee, Dae Won; Lee, Kwan Young; Moon, Dong Ju.

In: Fuel, Vol. 143, 01.03.2015, p. 63-71.

Research output: Contribution to journalArticle

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abstract = "In this study, a Pt-loaded mesoporous aluminosilicate (Pt/Al-SBA-15) was optimized as a catalyst for the hydrocracking of Fischer-Tropsch waxes, for which n-paraffin wax in the C21-34 range was used as a model reactant. Pt/Al-SBA-15 was more active than a Pt-loaded microporous zeolite (Pt/β-zeolite) in producing gasoline-range products from n-paraffin wax. Hydrocracking over Pt/Al-SBA-15 occurs via a bifunctional mechanism, the activity of which was correlated closely with the density (concentration) of strong acid sites and total exposed Pt surface area. The reaction was more noticeably promoted at the Br{\o}nsted acid sites, rather than at the Lewis acid sites, of Al-SBA-15. The highest gasoline yield (72.8{\%}) was achieved with the catalyst comprised of 0.5 wt.{\%} Pt and Al-SBA-15 with Si/Al molar ratio of 14.5.",
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AU - Seo, Myung Gi

AU - Lee, Dae Won

AU - Lee, Kwan Young

AU - Moon, Dong Ju

PY - 2015/3/1

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N2 - In this study, a Pt-loaded mesoporous aluminosilicate (Pt/Al-SBA-15) was optimized as a catalyst for the hydrocracking of Fischer-Tropsch waxes, for which n-paraffin wax in the C21-34 range was used as a model reactant. Pt/Al-SBA-15 was more active than a Pt-loaded microporous zeolite (Pt/β-zeolite) in producing gasoline-range products from n-paraffin wax. Hydrocracking over Pt/Al-SBA-15 occurs via a bifunctional mechanism, the activity of which was correlated closely with the density (concentration) of strong acid sites and total exposed Pt surface area. The reaction was more noticeably promoted at the Brønsted acid sites, rather than at the Lewis acid sites, of Al-SBA-15. The highest gasoline yield (72.8%) was achieved with the catalyst comprised of 0.5 wt.% Pt and Al-SBA-15 with Si/Al molar ratio of 14.5.

AB - In this study, a Pt-loaded mesoporous aluminosilicate (Pt/Al-SBA-15) was optimized as a catalyst for the hydrocracking of Fischer-Tropsch waxes, for which n-paraffin wax in the C21-34 range was used as a model reactant. Pt/Al-SBA-15 was more active than a Pt-loaded microporous zeolite (Pt/β-zeolite) in producing gasoline-range products from n-paraffin wax. Hydrocracking over Pt/Al-SBA-15 occurs via a bifunctional mechanism, the activity of which was correlated closely with the density (concentration) of strong acid sites and total exposed Pt surface area. The reaction was more noticeably promoted at the Brønsted acid sites, rather than at the Lewis acid sites, of Al-SBA-15. The highest gasoline yield (72.8%) was achieved with the catalyst comprised of 0.5 wt.% Pt and Al-SBA-15 with Si/Al molar ratio of 14.5.

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