Heterogeneous catalyst engineering ⇒ from stable and deactivation resistant to viable technical catalyst

Problem statement

Advances in heterogeneous catalyst “structure” are driven to improve their “function” or performance, i.e., activity, selectivity, and stability. Cooperative research is required to understand the structure and function relationships: developing new synthesis protocols for heterogeneous catalysts with unique surface properties, defined porosity, identification and understanding of catalytically active sites, reaction mechanisms, and finally, prediction and analysis of the processes using various computational tools.

Our group focuses on developing new catalyst formulations using innovative synthesis routes for various important heterogeneous catalysts. That includes thermal, electro, and bio-electro catalysis.

The active phase cannot be used directly in its final application or reactor for various reasons, including poor mechanical resistance, heat or mass transport, and fluidization features. We must mix the active phase with other ingredients in a matrix of binder and filler, while we shape it into a technical catalyst. We investigate new synthetic protocols for technical catalysis using spray drying and fluidized beds to cover the whole range of sizes. At the same time, we incorporate additional (unconventional) ingredients such as SiC to improve some features even further.

Goals

  • Technical catalyst I ⇒ spray drying and extrusion
  • Technical catalyst II ⇒ spray fluidized bed reactor
  • Technical catalyst III ⇒ electrospinning
  • Zeolite catalysts ⇒ with defined structure/porosity
  • Multi-metal (high entropy) alloy catalysts
  • MXene catalysts ⇒ single and multi-dimensional
  • Perovskite catalysts
  • Metal-organic framework (MOFs) catalysts
  • Supported metal/metal-oxide catalysts
  • Aerogel catalyst

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Related Publications

Enhancement of Aromatic Hydro-Upgrading on a Pt Catalyst by Promotion with Pd and Shape-Selective Support

by Gutierrez, Arandes, Castaño, Olazar, Bilbao
Fuel Process. Technol. Year: 2012

Abstract

The effect of the composition of the metallic function (Pt and Pt–Pd) and acid function (HUSY and Hβ zeolites) in the catalysts has been studied in the hydrocracking of LCO in the 350–400 °C range. The remaining operating conditions are: 50 bar; H2/LCO molar ratio (nH2), 8.90 molH2 (molLCO)− 1; space velocity (WHSV), 4 h− 1; time on stream (TOS), 0–24 h. The reaction indices studied are the conversions of hydrocracking and hydrodesulphurization and the yields of naphtha, medium distillates, LPG and dry gases. It has been proven that the metallic function, the acidity of the acid function and temperature increase give way to an increase in the activity remaining in the catalyst in the pseudo-stable state (subsequent to deactivation for 5 h time on stream). Likewise, these conditions enhance the production of naphtha and medium distillates with a lower content of aromatics and a higher one of paraffins and naphthenes. Pt–Pd/HY catalyst is very stable and has a high capacity for producing naphtha and medium distillates at 400 °C.

Keywords

HPC HCE W2C