Naphtha reforming capacity of catalysts with different metallic functions

J.M. GRAU; J.M. PARERA

INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH

AMER CHEMICAL SOC

Lugar: Washington; Año: 1989 vol. 28 p. 1596 - 1600

0888-5885

The aromatizing capacity and the deactivation produced by coke and sulfur of metals supported on A120,-C1 catalysts were studied for the reforming of n-paraffins (C7-Cl0) and naphtha cuts (light and heavy) under commercial conditions. The metallic components of the catalysts were Pt(0.3%), Pt( 1.14%), and Pt(0.30% )-Re(0.30%)-S(0.04% ) for balanced metal and Pt(0.22 % )-Re(0.44 % )-S(0.064%) for skewed metal. Both Pt(0.3%) and Pt-Re balanced-metal catalysts are more selective toward aromatics with n-C7 and n-C8, while Pt(1.14%) and Pt-Re skewed-metal catalysts are better with n-C9 and n-Clo. Regarding the naphtha cuts, the balanced-metal catalyst produces a higher increase in octane number for the light cut than the skewed-metal catalyst, while the skewed is better for the heavy cut. The skewed catalyst produces more gas with both cuts. This catalyst is more stable and has a greater activity recovery after being deactivated by coke deposition. The thiophene deactivation is similar in both catalysts.