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Upgrading renewables, secondary, and waste streams through innovative hydroprocessing catalysts and reaction pathways

Problem statement

Hydroprocessing is a well-implemented and versatile refinery conversion strategy, comprising a wide array of reaction routes such as: (i) hydrotreating, aiming for the hydrogenation of unsaturated hydrocarbons and the removal (hydrogenolysis) of heteroatoms such as sulfur or nitrogen; (ii) hydrocracking, for promoting C–C bond scission and the partial saturation of aromatics; or (iii) hydrodeoxygenation, for the specific removal of oxygen moieties. In this project, we investigate the conversion of highly polyaromatic feedstock like heavy fuel oil (HFO), pyrolysis fuel oil (PFO), or bio-oils from different biomass sources (i.e., agricultural waste, algae) for quality improvement and obtaining products with higher added value.

We seek new (thermo-) catalytic strategies and improved heterogeneous catalysts with increased activity and stability. We put advanced analytical characterization techniques (i.e., nuclear magnetic resonance, high-res mass spectrometry) to work and combine their results with modeling and statistical tools.

Goals

  • Develop a quantitative analytical workflow to analyze and interpret these complex reacting environments
  • Explore novel renewable and waste resources to obtain chemicals and fuels
  • Deploy ad-hoc catalysts and process conditions to incorporate these wastes in the refinery (bio- and waste-refinery)
  • Analyze process dynamics and kinetics
HPC

Related People

Related Publications

Kinetic and Deactivation Modelling of Biphenyl Liquid-Phase Hydrogenation over Bimetallic Pt-Pd Catalyst

by Castaño, Van Herk, Kreutzer, Moulijn, Makkee
Appl. Catal. B: Environ. Year: 2009

Abstract

The hydrogenation of biphenyl was modelled kinetically on a Pt–Pd supported catalyst, comprising the influence of the sulphur poisoning. Aromatic deep hydrogenation is one of the challenges for meeting the environmental requirements of fuels. Noble bimetallic catalysts are promising systems for such purpose due to their (i) improved activity compared to standard hydrotreating catalysts and their (ii) enhanced resistance toward sulphur poisoning in contrast to their monometallic counterparts. The experiments used for the modelling have been obtained in the intrinsic kinetic regime, excluding internal and external mass transfer limitations. A robust model for both kinetic and deactivation performance is derived, taking as initial estimations the values derived from the pseudo-first-order kinetics. This model clarifies the mechanisms of adsorption, reaction, and deactivation during polycyclic-aromatic-hydrocarbon (PAH) hydrogenation on intrinsic kinetic conditions.

Keywords

HPC MKM