Experimental and Kinetic Study of the Effect of using Zr- and Pt-loaded Metals on Y-zeolite-based Catalyst to Improve the Products of n-heptane Hydroisomerization Reactions

The escalating cost of Pt metal has prompted researchers to incorporate other metals into Pt/catalysts reduce the amount Pt. In this work, several bimetallic Pt-Zr/HY-zeolite catalysts were prepared by incorporating small amounts inexpensive Zr Pt/HY-zeolite form an active and selective catalyst. Results showed that although half required platinum was used, catalytic activity Pt-Zr/HY catalyst higher than monometallic (Pt or Zr)/HY catalysts, as a result improved Lewis acidity resulted from addition metal; additionally, branched alkanes' yield also increased. optimum bimetallic, containing 0.5 wt% + Zr, which achieved highest isomers at 70.2 mol%, along with 82.61 84.98 mol% for conversion selectivity, respectively, under 1 MPa 250°C reaction conditions. addition, hydroisomerization kinetic model achieved, giving good predicted results in agreement experimental calculations, acceptable relative error. It found lower activation energies (about 44.5 kJ/mol) needed olefin hydrogenation iso-paraffins, while i-paraffin hydrocracking 138.1kJ/mol).