A Highly Active and Selective Nanocomposite Catalyst for C₇₊ Paraffin Isomerization

Abstract

Ein Pt/WO3/Al‐ZrOx‐Nanokomposit wandelt verschiedene Kohlenwasserstoffe bereits bei 150 °C effizient um (siehe Bild, X=Umsatz), ohne dass starkes Cracken oder Verkokung auftreten. Der neuartige Katalysator könnte zur Produktion von Treibstoffen mit hoher Oktanzahl bei niedrigem Arengehalt genutzt werden, da er n‐Alkane mit ausgezeichneter Selektivität in mehrfach verzeigte Isomere überführt.

An Overview of Recent Development in Composite Catalysts from Porous Materials for Various Reactions and Processes

“…It is unlikely that H 3 PW 12 O 40 (HPW) would be formed in the zeolite channels by the introduction of tungsten into phosphorus-modified HZSM-5, but some interaction between tungsten and phosphorus species should be expected by doping tungsten species to P/HZSM-5. Furthermore, it has been documented that supported tungsten oxides are good catalysts for isomerization of hydrocarbons, e.g., 1-butene, n -decane and C 7 + paraffins [ 101 – 105 ]. Considering these properties of tungsten and the anticipated interaction between phosphorus and tungsten, we concluded that doping tungsten into P/HZSM-5 would further promote its catalytic performance for 1-butene cracking.…”

Preparation of Highly Active and Dispersed Platinum Nanoparticles on Mesoporous Al‐MCM‐48 and Their Activity in the Hydroisomerisation of n‐Octane

“…Among the noble metals, Pt has been shown to considerably increase the selectivity in favour of isomerisation, and is therefore the most suitable metal for the hydroconversion of n-alkanes. [2] Various catalysts have been reported to be active in the hydroisomerisation of C 7 and longer C 7 chain n-alkanes, including materials based on MoO 3 , [13] Pt-WO 3 -ZrO 2 , [4,[14][15][16][17] Al-MCM-41, [18,19] zeolite-supported Pt, [20][21][22][23] and Pt-silicoaluminophosphates (SAPO) materials [8,9,24] as alternatives to the traditional Pt and Re/Al 2 O 3 catalysts. In particular, compared to microporous zeolites, Al-MCM-41 materials have a moderate acidity, and the incorporation of metallic sites into these materials (e.g.…”