Technologies and services

SCOPE

Use of hydrogen as a raw material

Maturity Level

TRL 3-4

Development Level

Prototype 

Protection Level

Under study

Selective hydrogenation of CO2 to methane, methanol and synfuels   

Entity:

This technology explores the conversion of CO2 to methane, methanol and synthetic fuels using a selective catalytic hydrogenation process. Hydrogen can be obtained from biomass with a combination of catalytic, photocatalytic and biological processes, taking advantage of all the fractions contained in a lignocellulosic material. 

Catalytic hydrogenation of CO2 currently represents the most promising technology for its conversion into high value-added products (e.g. methane, methanol) by catalysis. Most of the existing CO2 to ethanol catalytic processes have a low selectivity on ethanol (65%) with a significant presence of by-products in the effluent (methanol, higher alcohols, organic acids, etc.) and, to obtain better results, unrealistic batch systems must be used. 

Challenges met

Development of new multifunctional catalysts featuring: 

  • high selectivity to methanol/ethanol (95%) 
  • high stability (> 100 h in current) allow the production of by-products to be minimised. 

CO2 hydrogenation using gas-phase fixed-bed reactors on CH4 to produce a fuel gas that meets the criteria of a substitute natural gas (SNG).

Scope of application

  • Agricultural sector 
  • Biomass waste sector 
  • If you had a good time, you had a good time. 

Main publications

  • Contreras, S.; Medina, F.; et. al., 2021: Photocatalytic hydrogen production from watermethanol and -glycerol mixtures using Pd/TiO2(-WO3) catalysts and validation in a solar pilot plant. International Journal of Hydrogen Energy, 46(73): 36152-36166. DOI: https://doi.org/10.1016/j.ijhydene.2021.08.141  
  • Constantí, M.; Contreras, S.; Medina, F.; et. al., 2021: Microwave-assisted condensation of biobased hydroxymethylfurfural and acetone over recyclable hydrotalcite-related materials. Applied Catalysis B: Environmental, 282: 119599. DOI: https://doi.org/10.1016/j.apcatb.2020.119599 

Related projects

  • H2_BIOCAPABLE: H2 production from biomass by combination of catalytic, photocatalytic & biological processes 
  • FUELPHORIA: Accelerating the sustainable production of advanced biofuels and RFNBOs – from feedstock to end-use

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