Abstract
The hydrocracking of distillers dried grains with solubles (DDGS) corn oil over bimetallic carbide catalysts was explored for green diesel production. A catalyst composed of nickel–tungsten (Ni–W) carbide supported on Al-SBA-15 was designed based on the ability of nickel to adsorb and activate hydrogen and the potential of tungsten for hydrogenation reactions. Four different Ni–W ratios (1:9, 1:1, 2:1, and 9:1) were prepared by the impregnation method to study the effect of metal ratio on the catalyst structure, activity, and selectivity. Catalyst activity was evaluated in a fixed bed reactor at 400 °C and 650 psi (4.48 MPa) with a hydrogen flow rate of 30 mL min–1 and DDGS corn oil flow rate of 0.08 mL min–1. The catalysts showed significant differences in activity and selectivity, with the catalyst having a Ni–W ratio of 9:1 achieving 100% conversion of corn oil and 100% selectivity to diesel for 2 days. Results indicate that by minimizing metal alloy formation and enhancement of the metal dispersion le...
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