Continuous-Flow Hydroisomerization of C5–C7 Alkanes Using Mechanochemically Synthesized Supported Pt and Pd-SBA-15 Materials

Abstract

SBA-15 materials exhibit important properties including large surface area, highly ordered mesopores, and high stability in a variety of catalytic reactions. In this study, Al and Zr-loaded SBA-15 materials (Si/Zr = 30, Si/Al = 30), 50 molar ratio with Pd (1, 2, and 4% (w/w)) and Pt (0.5 and 1% (w/w)) were tested in the isomerization of C5-C7 linear alkanes. These solids were characterized using thermal gravimetric analysis-differential thermal analysis (TGA-DTA), nitrogen physisorption, and energy dispersive X-ray (EDX). Interestingly, the low porosity SBA-15 materials loaded with 2% (w/w) Pd were most active catalysts for n-heptane isomerization. The mechanochemical addition of tungsten also resulted in the increase of catalytic activity for the reaction. The results herein demonstrate the possibilities of SBA-15 catalysts as a commercial catalyst alternative in the catalytic isomerization of hydrocarbons.

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

“…Hidalgo et al studied the C 5 –C 7 alkane isomerization over Zr- and Al-loaded SBA-15 catalysts (SiO 2 /ZrO 2 = 30, and SiO 2 /Al 2 O 3 = 30) and 50 molar ratio of Pd (1, 2, and 4 wt %) and Pt (0.5 and 1 wt %). The results showed that Zr–SBA-15 catalysts were less active than Al–SBA-15.…”

Effect of Metal Precursors on the Performance of Pt/SAPO-11 Catalysts for n-Dodecane Hydroisomerization

“…Metal/acid bifunctional catalysts for alkane isomerization reactions have been studied extensively, such as Pt, Ni, and other metals loaded on molecular sieves. − The metals provide hydrogenation and dehydrogenation active centers, while the molecular sieves supply acidic centers. The key to make this combination become an excellent catalyst to achieve the above goal is to balance the acidic and the metallic properties of the catalysts. − …”