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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.

    HPC

    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

    Related People

    Related Publications

    Deactivating Species Deposited on Pt-Pd Catalysts in the Hydrocracking of LCO

    by Castaño, Gutierrez, Hita, Arandes, Aguayo, Bilbao
    Energy & Fuels Year: 2012

    Abstract

    The nature and composition of the coke deposited on Pt–Pd catalysts supported on acid carriers during the hydroprocessing (hydrocracking and hydrotreating) of light-cycle oil (LCO) has been studied. Five types of supports have been used: a commercial cracking catalyst, alumina, Hβ zeolite, and two HY zeolites (with different acidities). The hydrocracking runs have been performed at 350 °C and 50 bar for up to 24 h. The characterization of the deactivating species on the catalyst used has been performed using temperature-programmed oxidation (TPO) coupled with mass spectrometry (MS) and Fourier transformed infrared (FTIR) spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, and comprehensive two-dimensional gas chromatography/mass spectrometry (GC × GC/MS) analysis of the soluble coke extracted from the deactivated catalyst. The complex composition of the coke has been simplified in three families, each related to a different composition and location. The composition of the coke (and the amount of each type of coke) strongly depends upon the catalyst properties, particularly the features of the support: acidity and micropore topology.

    Keywords

    HPC W2C ANW