AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary
The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.
Authors: MIHAI MARINESCU, DRAGOȘ MIHAEL CIUPARU , DORIN BOMBOȘ, CRISTINA MARIA DUȘESCU-VASILE, ROXANA DANIELA POPOVICI, VASILE MATEI.
DOI: 10.24193/subbchem.2023.3.05
Published Online: 2023-09-30
Published Print: 2023-09-30
pp. 71-98
VIEW PDF
FULL PDF
Vegetable oils are widely available in nature and are one of the most important sustainable feedstocks for biofuel production. W/Pd/γ-Al2O3-ZnZSM-5 and Nb/Pd/γ-Al2O3-ZnZSM-5 catalysts where prepared, characterized and tested in the hydrogenolysis reaction of palm oil fatty acid esters. The catalysts were characterized by determining the textural characteristics, the thermal stability, and the nature of the acidic sites. The appearance of particle agglomerations was evaluated by scanning electron microscopy (SEM). The resulting reaction products were n-aliphatic hydrocarbons, iso-aliphatic hydrocarbons, cycloaliphatic hydrocarbons, and arenes. No oxygenated organic compounds were identified in the collected liquid phase. At lower pressures, the deoxygenation process occurs to approximately 33% through the hydrogenation of the carboxylic bond and to approximately 67% through decarboxylation/decarbonylation, while at higher pressure than 60 bar the deoxygenation process proceeds preferentially through decarboxylation/ decarbonylation.
Keywords: fatty acids methyl esters, W/Pd/γ-Al2O3-ZnZSM-5, Nb/Pd/γ-Al2O3-ZnZSM-5, catalyst, hydrogenolysis
