Title:
Effect of Reforming Conditions in the Catalyst Deactivation in the Pyrolysis-Reforming of Biomass for Hydrogen Production
Author(s):
Arregi, A., Amutio, M., Alvarez, J., Barbarias, I., Santamaria, L., Cortazar, M., Fernandez, E., Olazar, M.
Document(s):
Paper
Slide presentation
Abstract:
Hydrogen production from catalytic steam reforming of volatile products from biomass pyrolysis has been investigated using a reaction system provided with two steps in series: i) pyrolysis of biomass at 500 ºC in a conical spouted bed reactor, and ii) subsequent step of catalytic steam reforming of the pyrolysis volatiles in a fluidized bed over a commercial Ni reforming catalyst. The effect of temperature (550-700 ºC), space time (10-30 gcatalyst min gvolatiles-1) and steam/biomass ratio (2-5) on catalyst deactivation has been studied in order to establish suitable conditions for attenuating the deactivation by coke deposition. Two types of coke have been identified by temperature programmed oxidation (TPO): the coke deposited on the Ni active sites and the one separated from these sites. Coke deposition has been related to the decomposition of the oxygenates derived from biomass pyrolysis and the re-polymerization of phenolic oxygenates.
Keywords:
biomass, hydrogen, pyrolysis, reforming, deactivation
Topic:
Biomass Conversion Technologies for Fuels, Chemicals and Materials
Subtopic:
Pyrolysis
Event:
26th European Biomass Conference and Exhibition
Session:
3CO.15.5
Pages:
998 - 1004
ISBN:
978-88-89407-18-9
Paper DOI:
10.5071/26thEUBCE2018-3CO.15.5
Price:
FREE
