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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

Role of Acidity in the Deactivation and Steady Hydroconversion of Light Cycle Oil on Noble Metal Supported Catalysts

by Gutierrez, Arandes, Castaño, Aguayo, Bilbao
Energy & Fuels Year: 2011

Abstract

The deactivation of noble metal catalysts has been studied in the hydrocracking of the Light Cycle Oil (LCO) obtained as a byproduct in FCC units. The catalyst metallic functions are Pd, Pt, and Pt–Pd, which are supported on acid materials of different porous structure and acidity (HY zeolite, Hβ zeolite, amorphous alumina, and an FCC catalyst). The reaction conditions are 350 °C; 50 bar; H2/LCO molar ratio (nH2), 8.9 molH2 (molLCO)−1; space velocity (WHSV), 4 h–1; time on stream, 300 min. The roles of the metallic function, porous structure of the support, and, particularly, catalyst acidity in the deactivation by coke deposition have been studied. Deactivation leads the catalyst to a pseudostable state, with significant activity remaining when a support with high acidity is used (a HY zeolite with SiO2/Al2O3 = 5) and a better performance of the Pt–Pd metallic function.

Keywords

HCE HPC W2C