Depolymerising hemicellulose into platform sugar molecules is a key step in developing the concept of an integrated biorefinery. This reaction is traditionally catalysed by either enzymes or homogeneous mineral acids. We compared various solid catalysts for hemicellulose hydrolysis, running reactions in water, under neutral pH and relatively mild temperature and pressure (120 °C and 10 bar) conditions. Sulphonated resins are highly active, but they leach out sulphonic groups. Sulphonated silicas are less active, but more stable. They have weakly and strongly bound sites and the strongly bound ones do not leach. Zeolites are moderately active and stable. Among them, H-ferrierite especially, despite its small pores, exhibited high activity as well as good recyclability.

Demma Carà, P., Pagliaro, M., Elmekawy, A., Brown, D.R., Verschuren, P., Shiju, N.R., et al. (2013). Hemicellulose hydrolysis catalysed by solid acids. CATALYSIS SCIENCE & TECHNOLOGY, 3 [10.1039/C3CY20838A].

Hemicellulose hydrolysis catalysed by solid acids

DEMMA CARA', Piera;
2013

Abstract

Depolymerising hemicellulose into platform sugar molecules is a key step in developing the concept of an integrated biorefinery. This reaction is traditionally catalysed by either enzymes or homogeneous mineral acids. We compared various solid catalysts for hemicellulose hydrolysis, running reactions in water, under neutral pH and relatively mild temperature and pressure (120 °C and 10 bar) conditions. Sulphonated resins are highly active, but they leach out sulphonic groups. Sulphonated silicas are less active, but more stable. They have weakly and strongly bound sites and the strongly bound ones do not leach. Zeolites are moderately active and stable. Among them, H-ferrierite especially, despite its small pores, exhibited high activity as well as good recyclability.
Demma Carà, P., Pagliaro, M., Elmekawy, A., Brown, D.R., Verschuren, P., Shiju, N.R., et al. (2013). Hemicellulose hydrolysis catalysed by solid acids. CATALYSIS SCIENCE & TECHNOLOGY, 3 [10.1039/C3CY20838A].
File in questo prodotto:
File Dimensione Formato  
c3cy20838a.pdf

Solo gestori archvio

Dimensione 1.21 MB
Formato Adobe PDF
1.21 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/77062
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 71
  • ???jsp.display-item.citation.isi??? 70
social impact