Sulfur-tolerant Pd–Pt/Al2O3–B2O3 catalyst for aromatic hydrogenation
1999; Elsevier BV; Volume: 185; Issue: 2 Linguagem: Inglês
10.1016/s0926-860x(99)00193-3
ISSN1873-3875
AutoresHiroyuki Yasuda, Takashi Kameoka, Toshio Sato, Norihito Kijima, Yuji Yoshimura,
Tópico(s)Catalysis for Biomass Conversion
ResumoHydrogenation of tetralin was done over a bimetallic Pd–Pt catalyst supported on amorphous Al2O3–B2O3 at a hydrogen pressure of 3.9 MPa at 553 K in the presence of dibenzothiophene (sulfur content of 500 ppm by weight). The resulting activity and selectivity were compared with those for Pd–Pt supported on amorphous SiO2–Al2O3, γ-Al2O3, SiO2, and USY zeolites. Pd–Pt/Al2O3–B2O3 had high sulfur tolerance; it showed higher activity than Pd–Pt/SiO2–Al2O3, Pd–Pt/γ-Al2O3, Pd–Pt/SiO2, or Pd–Pt/USY (SiO2/Al2O3 = 680), but slightly lower activity than Pd–Pt/USY (SiO2/Al2O3 = 40). Furthermore, Pd–Pt/Al2O3–B2O3 showed excellent hydrogenation selectivity. This catalytic system, therefore, is promising for practically reducing the aromatics in diesel fuels.
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