{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1228"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1228","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΚΑΤΑΛΥΤΙΚΑ ΚΑΙ ΗΛΕΚΤΡΟΚΑΤΑΛΥΤΙΚΑ ΦΑΙΝΟΜΕΝΑ ΣΕ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΣΤΟΙΧΕΙΑ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ","abstract":"THE ANODIC OXIDATION OF CH3OH WAS INVESTIGATED IN SOLID ELECTROLYTE FULL CELLS (1 BAR, 820-970K).CH3OH CAN BE SELECTIVELY OXIDATED TO H2CO WITH SELECTIVITY ONTHE ORDER OF 90% AND ELECTRICAL ENERGY CONGENERATION. IT WAS ALSO FOUND THAT THE CATALYTIC ACTIVITY AND SELECTIVITY OF AG AND PT FOR THE DEHYDROGENERATION-DECOMPOSITION AND OXIDATION OF CH3OH RESPECTIVELY, CAN BE MARKEDLY AFFECTED FROM THE ELECTROCHEMICALLY PUMPED O2 TO OR FROM THE CATALYTIC SURFACE. THESE CHANGESCAN BE ESSENTIALLY ATTRIBUTED TO THE CHANGES IN THE CATALYST WORK FUNCTION. THE MATHEMATICAL MODEL OF SOLID STATE MONOLITHIC ELECTROCHEMICAL REACTORS WAS DEVELOPED. IT WAS FOUND THAT THE EFFECTIVENESS FACTOR OF A CATALYTIC PARTICLE IN ATRICKLE BED REACTOR, CAN BE EXCHANGED BY A FACTOR OF 2 WHEN THE WETTING EFFICIENCY CHANGES FAST WITH TIME AS IT IS THE CASE IN THE PULSE- FLOW REGIME, COMPARED WITH THE EFFECTIVENESS OF THE PARTICLE OPERATING IN THE TRICKLE-FLOW REGIME.","abstract_html":"THE ANODIC OXIDATION OF CH3OH WAS INVESTIGATED IN SOLID ELECTROLYTE FULL CELLS (1 BAR, 820-970K).CH3OH CAN BE SELECTIVELY OXIDATED TO H2CO WITH SELECTIVITY ONTHE ORDER OF 90% AND ELECTRICAL ENERGY CONGENERATION. IT WAS ALSO FOUND THAT THE CATALYTIC ACTIVITY AND SELECTIVITY OF AG AND PT FOR THE DEHYDROGENERATION-DECOMPOSITION AND OXIDATION OF CH3OH RESPECTIVELY, CAN BE MARKEDLY AFFECTED FROM THE ELECTROCHEMICALLY PUMPED O2 TO OR FROM THE CATALYTIC SURFACE. THESE CHANGESCAN BE ESSENTIALLY ATTRIBUTED TO THE CHANGES IN THE CATALYST WORK FUNCTION. THE MATHEMATICAL MODEL OF SOLID STATE MONOLITHIC ELECTROCHEMICAL REACTORS WAS DEVELOPED. IT WAS FOUND THAT THE EFFECTIVENESS FACTOR OF A CATALYTIC PARTICLE IN ATRICKLE BED REACTOR, CAN BE EXCHANGED BY A FACTOR OF 2 WHEN THE WETTING EFFICIENCY CHANGES FAST WITH TIME AS IT IS THE CASE IN THE PULSE- FLOW REGIME, COMPARED WITH THE EFFECTIVENESS OF THE PARTICLE OPERATING IN THE TRICKLE-FLOW REGIME.","abstract_has_math":false,"creators":["Neophytides, Stylianos","Νεοφυτίδης, Στυλιανός"],"institution":"University of Patras","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1988,"date_issued":"1988","date_published":"1988","updated_at":"2026-07-24T02:24:49Z","subjects":["DECOMPOSITION DEHYDROGENATION METHANOL","FORMALDEHYDE PRODUCTION","Fuel cells","Methanol oxidation","MODIFICATION CATALYTIC ACTIVITY","PULSE FLOW","SOLID ELECTROLYTE","TRICKLE-BED REACTOR","ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ ΣΩΜΑΤΙΔΙΩΝ","ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΜΕΘΑΝΟΛΗΣ","ΚΕΛΛΙΚΑΥΣΙΜΟΥ","Οξείδωση μεθανόλης","ΠΑΛΛΟΥΣΑ ΡΟΗ","ΠΑΡΑΓΩΓΗ ΦΟΡΜΑΔΕΥΔΗΣ","ΣΤΕΡΕΟΣ ΗΛΕΚΤΡΟΛΥΤΗΣ","ΤΡΟΠΟΠΟΙΗΣΗ ΚΑΤΑΛΥΤΙΚΗΣ ΕΝΕΡΓΟΤΗΤΑΣ","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1228"],"render_values":[{"text":"10.12681/eadd/1228","href":"https://doi.org/10.12681/eadd/1228","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1228","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Neophytides, Stylianos","Νεοφυτίδης, Στυλιανός"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1988"]},{"key":"dc:publisher","label":"Institution","values":["University of Patras","Πανεπιστήμιο Πατρών"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["DECOMPOSITION DEHYDROGENATION METHANOL","FORMALDEHYDE PRODUCTION","Fuel cells","Methanol oxidation","MODIFICATION CATALYTIC ACTIVITY","PULSE FLOW","SOLID ELECTROLYTE","TRICKLE-BED REACTOR","ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ ΣΩΜΑΤΙΔΙΩΝ","ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΜΕΘΑΝΟΛΗΣ","ΚΕΛΛΙΚΑΥΣΙΜΟΥ","Οξείδωση μεθανόλης","ΠΑΛΛΟΥΣΑ ΡΟΗ","ΠΑΡΑΓΩΓΗ ΦΟΡΜΑΔΕΥΔΗΣ","ΣΤΕΡΕΟΣ ΗΛΕΚΤΡΟΛΥΤΗΣ","ΤΡΟΠΟΠΟΙΗΣΗ ΚΑΤΑΛΥΤΙΚΗΣ ΕΝΕΡΓΟΤΗΤΑΣ","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1228","http://hdl.handle.net/10442/hedi/1228"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["THE ANODIC OXIDATION OF CH3OH WAS INVESTIGATED IN SOLID ELECTROLYTE FULL CELLS (1 BAR, 820-970K).CH3OH CAN BE SELECTIVELY OXIDATED TO H2CO WITH SELECTIVITY ONTHE ORDER OF 90% AND ELECTRICAL ENERGY CONGENERATION. IT WAS ALSO FOUND THAT THE CATALYTIC ACTIVITY AND SELECTIVITY OF AG AND PT FOR THE DEHYDROGENERATION-DECOMPOSITION AND OXIDATION OF CH3OH RESPECTIVELY, CAN BE MARKEDLY AFFECTED FROM THE ELECTROCHEMICALLY PUMPED O2 TO OR FROM THE CATALYTIC SURFACE. THESE CHANGESCAN BE ESSENTIALLY ATTRIBUTED TO THE CHANGES IN THE CATALYST WORK FUNCTION. THE MATHEMATICAL MODEL OF SOLID STATE MONOLITHIC ELECTROCHEMICAL REACTORS WAS DEVELOPED. IT WAS FOUND THAT THE EFFECTIVENESS FACTOR OF A CATALYTIC PARTICLE IN ATRICKLE BED REACTOR, CAN BE EXCHANGED BY A FACTOR OF 2 WHEN THE WETTING EFFICIENCY CHANGES FAST WITH TIME AS IT IS THE CASE IN THE PULSE- FLOW REGIME, COMPARED WITH THE EFFECTIVENESS OF THE PARTICLE OPERATING IN THE TRICKLE-FLOW REGIME.","ΜΕΛΕΤΗ ΑΝΟΔΙΚΗΣ ΟΞΕΙΔΩΣΗΣ ΤΗΣ CH3OH, ΣΕ ΚΕΛΙΑ ΚΑΥΣΙΜΟΥ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ (1 BAR, 820-970K). Η CH3OH ΜΠΟΡΕΙ ΝΑ ΟΞΕΙΔΩΘΕΙ ΕΚΛΕΚΤΙΚΑ ΠΡΟΣ H2CO ΜΕ ΕΚΛΕΚΤΙΚΟΤΗΤΑΤΗΣ ΤΑΞΗΣ ΤΟΥ 90%, ΜΕ ΤΑΥΤΟΧΡΟΝΗ ΠΑΡΑΓΩΓΗ ΗΛΕΚΤΡΙΚΗΣ ΕΝΕΡΓΕΙΑΣ. H ΚΑΤΑΛΥΤΙΚΗ ΕΝΕΡΓΟΤΗΤΑ ΚΑΙ ΕΚΛΕΚΤΙΚΟΤΗΤΑ ΤΟΥ AG ΚΑΙ PT ΓΙΑ ΤΗ ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΚΑΙ ΟΞΕΙΔΩΣΗ ΤΗΣ CH3OH ΑΝΤΙΣΤΟΙΧΑ, ΜΠΟΡΕΙ ΝΑ ΕΠΗΡΕΑΣΤΕΙ ΣΗΜΑΝΤΙΚΑ ΑΠΟ ΤΟ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΑΝΤΛΟΥΜΕΝΟ Ο2 ΠΡΟΣ 'Η ΑΠΟ ΤΗΝ ΚΑΤΑΛΥΤΙΚΗ ΕΠΙΦΑΝΕΙΑ. ΑΥΤΕΣ ΟΙ ΜΕΤΑΒΟΛΕΣ ΕΞΗΓΟΥΝΤΑΙ ΑΝ ΛΗΦΘΕΙ ΥΠ' ΟΨΗ Η ΜΕΤΑΒΟΛΗ ΣΤΟ ΕΡΓΟ ΕΞΟΔΟΥ ΤΟΥ ΚΑΤΑΛΥΤΗ. ΑΝΑΠΤΥΞΗ ΤΟΥ ΜΑΘΗΜΑΤΙΚΟΥ ΜΟΝΤΕΛΟΥ ΗΛΕΚΤΡΟΧΗΜΙΚΩΝ ΑΝΤΙΔΡΑΣΤΗΡΩΝ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΜΟΝΟΛΙΘΙΚΟΥ ΤΥΠΟΥ. Η ΔΥΝΑΜΙΚΗ ΕΠΙΛΥΣΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΕΝΟΣ ΚΑΤΑΛΥΤΙΚΟΥ ΣΩΜΑΤΙΔΙΟΥ ΤΟ ΟΠΟΙΟ ΒΡΙΣΚΕΤΑΙ ΣΕ ΑΝΤΙΔΡΑΣΤΗΡΑ ΤΡΙΩΝ ΦΑΣΕΩΝ (ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ) ΚΑΙ ΣΕ ΣΥΝΘΗΚΕΣ ΠΑΛΛΟΥΣΑΣ ΡΟΗΣ, ΑΠΕΔΕΙΞΕ ΟΤΙ Ο ΜΕΣΟΣ ΠΑΡΑΓΟΝΤΑΣ ΑΠΟΤΕΛΕΣΜΑΤΙΚΟΤΗΤΑΣ ΜΠΟΡΕΙ ΝΑ ΑΥΞΗΘΕΙ ΜΕΧΡΙ ΚΑΙ 100% ΣΕ ΣΧΕΣΗ ΜΕ ΤΗΝ ΑΠΟΔΟΣΗ ΤΟΥ ΣΩΜΑΤΙΔΙΟΥ ΥΠΟ ΣΥΝΘΗΚΕΣ ΣΥΝΕΧΟΥΣ ΡΟΗΣ."]},{"key":"dc:title","label":"Title","values":["ΚΑΤΑΛΥΤΙΚΑ ΚΑΙ ΗΛΕΚΤΡΟΚΑΤΑΛΥΤΙΚΑ ΦΑΙΝΟΜΕΝΑ ΣΕ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΣΤΟΙΧΕΙΑ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ","CATALYTIC AND ELECTROCATALYTIC PHENOMENA IN HIGH TEMPERATURE SOLID ELECTROLYTE ELECTROCHEMICAL CELLS"]}]}],"canonical_facts":{"dc:creator":["Neophytides, Stylianos","Νεοφυτίδης, Στυλιανός"],"dc:date":["1988"],"dc:description":["THE ANODIC OXIDATION OF CH3OH WAS INVESTIGATED IN SOLID ELECTROLYTE FULL CELLS (1 BAR, 820-970K).CH3OH CAN BE SELECTIVELY OXIDATED TO H2CO WITH SELECTIVITY ONTHE ORDER OF 90% AND ELECTRICAL ENERGY CONGENERATION. IT WAS ALSO FOUND THAT THE CATALYTIC ACTIVITY AND SELECTIVITY OF AG AND PT FOR THE DEHYDROGENERATION-DECOMPOSITION AND OXIDATION OF CH3OH RESPECTIVELY, CAN BE MARKEDLY AFFECTED FROM THE ELECTROCHEMICALLY PUMPED O2 TO OR FROM THE CATALYTIC SURFACE. THESE CHANGESCAN BE ESSENTIALLY ATTRIBUTED TO THE CHANGES IN THE CATALYST WORK FUNCTION. THE MATHEMATICAL MODEL OF SOLID STATE MONOLITHIC ELECTROCHEMICAL REACTORS WAS DEVELOPED. IT WAS FOUND THAT THE EFFECTIVENESS FACTOR OF A CATALYTIC PARTICLE IN ATRICKLE BED REACTOR, CAN BE EXCHANGED BY A FACTOR OF 2 WHEN THE WETTING EFFICIENCY CHANGES FAST WITH TIME AS IT IS THE CASE IN THE PULSE- FLOW REGIME, COMPARED WITH THE EFFECTIVENESS OF THE PARTICLE OPERATING IN THE TRICKLE-FLOW REGIME.","ΜΕΛΕΤΗ ΑΝΟΔΙΚΗΣ ΟΞΕΙΔΩΣΗΣ ΤΗΣ CH3OH, ΣΕ ΚΕΛΙΑ ΚΑΥΣΙΜΟΥ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ (1 BAR, 820-970K). Η CH3OH ΜΠΟΡΕΙ ΝΑ ΟΞΕΙΔΩΘΕΙ ΕΚΛΕΚΤΙΚΑ ΠΡΟΣ H2CO ΜΕ ΕΚΛΕΚΤΙΚΟΤΗΤΑΤΗΣ ΤΑΞΗΣ ΤΟΥ 90%, ΜΕ ΤΑΥΤΟΧΡΟΝΗ ΠΑΡΑΓΩΓΗ ΗΛΕΚΤΡΙΚΗΣ ΕΝΕΡΓΕΙΑΣ. H ΚΑΤΑΛΥΤΙΚΗ ΕΝΕΡΓΟΤΗΤΑ ΚΑΙ ΕΚΛΕΚΤΙΚΟΤΗΤΑ ΤΟΥ AG ΚΑΙ PT ΓΙΑ ΤΗ ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΚΑΙ ΟΞΕΙΔΩΣΗ ΤΗΣ CH3OH ΑΝΤΙΣΤΟΙΧΑ, ΜΠΟΡΕΙ ΝΑ ΕΠΗΡΕΑΣΤΕΙ ΣΗΜΑΝΤΙΚΑ ΑΠΟ ΤΟ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΑΝΤΛΟΥΜΕΝΟ Ο2 ΠΡΟΣ 'Η ΑΠΟ ΤΗΝ ΚΑΤΑΛΥΤΙΚΗ ΕΠΙΦΑΝΕΙΑ. ΑΥΤΕΣ ΟΙ ΜΕΤΑΒΟΛΕΣ ΕΞΗΓΟΥΝΤΑΙ ΑΝ ΛΗΦΘΕΙ ΥΠ' ΟΨΗ Η ΜΕΤΑΒΟΛΗ ΣΤΟ ΕΡΓΟ ΕΞΟΔΟΥ ΤΟΥ ΚΑΤΑΛΥΤΗ. ΑΝΑΠΤΥΞΗ ΤΟΥ ΜΑΘΗΜΑΤΙΚΟΥ ΜΟΝΤΕΛΟΥ ΗΛΕΚΤΡΟΧΗΜΙΚΩΝ ΑΝΤΙΔΡΑΣΤΗΡΩΝ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΜΟΝΟΛΙΘΙΚΟΥ ΤΥΠΟΥ. Η ΔΥΝΑΜΙΚΗ ΕΠΙΛΥΣΗ ΤΗΣ ΣΥΜΠΕΡΙΦΟΡΑΣ ΕΝΟΣ ΚΑΤΑΛΥΤΙΚΟΥ ΣΩΜΑΤΙΔΙΟΥ ΤΟ ΟΠΟΙΟ ΒΡΙΣΚΕΤΑΙ ΣΕ ΑΝΤΙΔΡΑΣΤΗΡΑ ΤΡΙΩΝ ΦΑΣΕΩΝ (ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ) ΚΑΙ ΣΕ ΣΥΝΘΗΚΕΣ ΠΑΛΛΟΥΣΑΣ ΡΟΗΣ, ΑΠΕΔΕΙΞΕ ΟΤΙ Ο ΜΕΣΟΣ ΠΑΡΑΓΟΝΤΑΣ ΑΠΟΤΕΛΕΣΜΑΤΙΚΟΤΗΤΑΣ ΜΠΟΡΕΙ ΝΑ ΑΥΞΗΘΕΙ ΜΕΧΡΙ ΚΑΙ 100% ΣΕ ΣΧΕΣΗ ΜΕ ΤΗΝ ΑΠΟΔΟΣΗ ΤΟΥ ΣΩΜΑΤΙΔΙΟΥ ΥΠΟ ΣΥΝΘΗΚΕΣ ΣΥΝΕΧΟΥΣ ΡΟΗΣ."],"dc:identifier":["10.12681/eadd/1228","http://hdl.handle.net/10442/hedi/1228"],"dc:language":["gre"],"dc:publisher":["University of Patras","Πανεπιστήμιο Πατρών"],"dc:subject":["DECOMPOSITION DEHYDROGENATION METHANOL","FORMALDEHYDE PRODUCTION","Fuel cells","Methanol oxidation","MODIFICATION CATALYTIC ACTIVITY","PULSE FLOW","SOLID ELECTROLYTE","TRICKLE-BED REACTOR","ΔΙΑΒΡΕΓΜΕΝΗ ΚΛΙΝΗ ΣΩΜΑΤΙΔΙΩΝ","ΔΙΑΣΠΑΣΗ-ΑΦΥΔΡΟΓΟΝΩΣΗ ΜΕΘΑΝΟΛΗΣ","ΚΕΛΛΙΚΑΥΣΙΜΟΥ","Οξείδωση μεθανόλης","ΠΑΛΛΟΥΣΑ ΡΟΗ","ΠΑΡΑΓΩΓΗ ΦΟΡΜΑΔΕΥΔΗΣ","ΣΤΕΡΕΟΣ ΗΛΕΚΤΡΟΛΥΤΗΣ","ΤΡΟΠΟΠΟΙΗΣΗ ΚΑΤΑΛΥΤΙΚΗΣ ΕΝΕΡΓΟΤΗΤΑΣ","Επιστήμες Μηχανικού και Τεχνολογία","Επιστήμη Χημικού Μηχανικού","Engineering and Technology","Chemical Engineering"],"dc:title":["ΚΑΤΑΛΥΤΙΚΑ ΚΑΙ ΗΛΕΚΤΡΟΚΑΤΑΛΥΤΙΚΑ ΦΑΙΝΟΜΕΝΑ ΣΕ ΗΛΕΚΤΡΟΧΗΜΙΚΑ ΣΤΟΙΧΕΙΑ ΣΤΕΡΕΟΥ ΗΛΕΚΤΡΟΛΥΤΗ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ","CATALYTIC AND ELECTROCATALYTIC PHENOMENA IN HIGH TEMPERATURE SOLID ELECTROLYTE ELECTROCHEMICAL CELLS"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:49Z"}