The transesterification of triglycerides contained in waste oilseed fruits with methanol has been studiedin heterogeneous/homogeneous systems using acid and base catalysts. The acid catalysts (strong acidcatalysts: USY, BEA, FAU-X, and weak acid catalysts: MCM-41 and ITQ-6 with Si/Al =∞) were preparedby hydrothermal synthesis procedures. In order to obtain acid–base catalysts, potassium was loadedon different materials by ionic exchange (obtaining K-MCM-41, K-ITQ-6,). XRD, ICP-MS, IR after CO andCO2 adsorption, thermal analyses and N2 adsorption/desorption techniques have been used for catalystscharacterization. The highest triglycerides conversion and biodiesel yield values were achieved by K-ITQ-6 catalysts, after 24 h of reaction at 180 ◦C. Deactivation of this catalyst occurs for potassium leaching, butits regeneration and reuse are feasible and easy to perform. A possible continuous biodiesel productionprocess has been proposed

Biodiesel production process by homogeneous/heterogeneous catalytic system using an acid-base catalyst

GIUFFRE' Angelo Maria
2010

Abstract

The transesterification of triglycerides contained in waste oilseed fruits with methanol has been studiedin heterogeneous/homogeneous systems using acid and base catalysts. The acid catalysts (strong acidcatalysts: USY, BEA, FAU-X, and weak acid catalysts: MCM-41 and ITQ-6 with Si/Al =∞) were preparedby hydrothermal synthesis procedures. In order to obtain acid–base catalysts, potassium was loadedon different materials by ionic exchange (obtaining K-MCM-41, K-ITQ-6,). XRD, ICP-MS, IR after CO andCO2 adsorption, thermal analyses and N2 adsorption/desorption techniques have been used for catalystscharacterization. The highest triglycerides conversion and biodiesel yield values were achieved by K-ITQ-6 catalysts, after 24 h of reaction at 180 ◦C. Deactivation of this catalyst occurs for potassium leaching, butits regeneration and reuse are feasible and easy to perform. A possible continuous biodiesel productionprocess has been proposed
File in questo prodotto:
File Dimensione Formato  
Macario_2010_Applied Catalysis A_Biodiesel production_Editor.pdf

non disponibili

Descrizione: Versione editoriale
Tipologia: Versione Editoriale (PDF)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 1.03 MB
Formato Adobe PDF
1.03 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/20.500.12318/3696
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 92
  • ???jsp.display-item.citation.isi??? 89
social impact