{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1253"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1253","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΡΥΘΜΙΣΗ ΤΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΦΟΡΤΙΩΝ ΚΑΤΑΛΥΤΙΚΩΝ ΦΟΡΕΩΝ ΜΕ ΤΗ ΧΡΗΣΗ ΤΡΟΠΟΠΟΙΗΤΩΝ","abstract":"THE DOPING OF Γ-AL203 AMOUNTS OF SODIUM, LITHIUM AND FLUORIDE IONS WAS USED FORREGULATING THE ZERO POINT OF CHARGE (ZPC), SURFACE ACIDITY CONSTANTS AND THE CONCENTRATION OF THE CHARGED SURFACE GROUPS, DETERMINED POTENTIOMETRICALLY, OVERA WIDE PH RANGE. THE ADSORPTION OF IONIC SPECIES CONTAINING THE CATALYTICALLY ACTIVE IONS MO(VI), CO(II) AND NI(II), ON THE SURFACE OF PURE Γ-AL2O3 AND THE DOPED CARRIERS HAS BEEN STUDIED. CONCERNING THE ADSORPTION OF THE MO(VI), CO(II)AND NI(II) IONIC SPECIES IT WAS FOUND THAT THE FOWLER-GUGGENHEIM EQUATION, MODIFIED TO TAKE INTO ACCOUNT THE FACT THAT THE ADSORPTION TAKES PLACE ON CHARGED SURFACES, DESCRIBES QUITE WELL THE ISOTHERMS ACHIEVED. THIS SHOWS THE PRESENCE OF NON NEGLIGIBLE LATERAL INTERACTIONS BETWEEN THE ADSORBED SPECIES. THIS STUDYCLEARLY SHOWED THAT THE MODIFICATION ON Γ-AL2O3 WITH NA+, LI+ OR F- IONS IS A VERY FINE METHOD IN ORDER TO INCREASE THE ADSORPTIVE CAPACITY OF THIS CARRIERS FOR NEGATIVE OR POSITIVE IONIC SPECIES. THEREFORE, IT CAN BE USED FOR THE PREPARATION OF SUPPORTED CATALYSTS WITH HIGH ACTIVE SURFACE.","abstract_html":"THE DOPING OF Γ-AL203 AMOUNTS OF SODIUM, LITHIUM AND FLUORIDE IONS WAS USED FORREGULATING THE ZERO POINT OF CHARGE (ZPC), SURFACE ACIDITY CONSTANTS AND THE CONCENTRATION OF THE CHARGED SURFACE GROUPS, DETERMINED POTENTIOMETRICALLY, OVERA WIDE PH RANGE. THE ADSORPTION OF IONIC SPECIES CONTAINING THE CATALYTICALLY ACTIVE IONS MO(VI), CO(II) AND NI(II), ON THE SURFACE OF PURE Γ-AL2O3 AND THE DOPED CARRIERS HAS BEEN STUDIED. CONCERNING THE ADSORPTION OF THE MO(VI), CO(II)AND NI(II) IONIC SPECIES IT WAS FOUND THAT THE FOWLER-GUGGENHEIM EQUATION, MODIFIED TO TAKE INTO ACCOUNT THE FACT THAT THE ADSORPTION TAKES PLACE ON CHARGED SURFACES, DESCRIBES QUITE WELL THE ISOTHERMS ACHIEVED. THIS SHOWS THE PRESENCE OF NON NEGLIGIBLE LATERAL INTERACTIONS BETWEEN THE ADSORBED SPECIES. THIS STUDYCLEARLY SHOWED THAT THE MODIFICATION ON Γ-AL2O3 WITH NA+, LI+ OR F- IONS IS A VERY FINE METHOD IN ORDER TO INCREASE THE ADSORPTIVE CAPACITY OF THIS CARRIERS FOR NEGATIVE OR POSITIVE IONIC SPECIES. THEREFORE, IT CAN BE USED FOR THE PREPARATION OF SUPPORTED CATALYSTS WITH HIGH ACTIVE SURFACE.","abstract_has_math":false,"creators":["Βορδώνης, Λεωνίδας"],"institution":"Πανεπιστήμιο Πατρών","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":["Adsorption isotherms","ADSORPTION MECHANISM","CATALYTIC CARRIERS","MODIFIERS (SODIUM-LITHIUM-FLUORIDE)","Potentiometric titrations","SORPTION CATALYSTS","Supported catalysts","SUPPORTED MOLYBDENA CATALYSTS","SURFACE CHARGE","ΕΠΙΦΑΝΕΙΑΚΟ ΦΟΡΤΙΟ","Ισόθερμος προσρόφησης","ΚΑΤΑΛΥΤΕΣ ΠΡΟΣΡΟΦΗΣΗΣ","ΚΑΤΑΛΥΤΙΚΟΙ ΦΟΡΕΙΣ","ΜΗΧΑΝΙΣΜΟΣ ΠΡΟΣΡΟΦΗΣΗΣ","Ποτενσιομετρικές τιτλοδοτήσεις","Στηριζόμενοι καταλύτες","ΣΤΗΡΙΖΟΜΕΝΟΙ ΜΟΛΥΒΔΕΝΙΚΟΙ ΚΑΤΑΛΥΤΕΣ","ΤΡΟΠΟΠΟΙΗΤΕΣ (ΝΑΤΡΙΟ-ΛΙΘΙΟ-ΦΘΟΡΙΟ)","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1253"],"render_values":[{"text":"10.12681/eadd/1253","href":"https://doi.org/10.12681/eadd/1253","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1253","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Βορδώνης, Λεωνίδας"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1988"]},{"key":"dc:publisher","label":"Institution","values":["Πανεπιστήμιο Πατρών","University of Patras"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Adsorption isotherms","ADSORPTION MECHANISM","CATALYTIC CARRIERS","MODIFIERS (SODIUM-LITHIUM-FLUORIDE)","Potentiometric titrations","SORPTION CATALYSTS","Supported catalysts","SUPPORTED MOLYBDENA CATALYSTS","SURFACE CHARGE","ΕΠΙΦΑΝΕΙΑΚΟ ΦΟΡΤΙΟ","Ισόθερμος προσρόφησης","ΚΑΤΑΛΥΤΕΣ ΠΡΟΣΡΟΦΗΣΗΣ","ΚΑΤΑΛΥΤΙΚΟΙ ΦΟΡΕΙΣ","ΜΗΧΑΝΙΣΜΟΣ ΠΡΟΣΡΟΦΗΣΗΣ","Ποτενσιομετρικές τιτλοδοτήσεις","Στηριζόμενοι καταλύτες","ΣΤΗΡΙΖΟΜΕΝΟΙ ΜΟΛΥΒΔΕΝΙΚΟΙ ΚΑΤΑΛΥΤΕΣ","ΤΡΟΠΟΠΟΙΗΤΕΣ (ΝΑΤΡΙΟ-ΛΙΘΙΟ-ΦΘΟΡΙΟ)","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"]}]},{"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/1253","http://hdl.handle.net/10442/hedi/1253"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["THE DOPING OF Γ-AL203 AMOUNTS OF SODIUM, LITHIUM AND FLUORIDE IONS WAS USED FORREGULATING THE ZERO POINT OF CHARGE (ZPC), SURFACE ACIDITY CONSTANTS AND THE CONCENTRATION OF THE CHARGED SURFACE GROUPS, DETERMINED POTENTIOMETRICALLY, OVERA WIDE PH RANGE. THE ADSORPTION OF IONIC SPECIES CONTAINING THE CATALYTICALLY ACTIVE IONS MO(VI), CO(II) AND NI(II), ON THE SURFACE OF PURE Γ-AL2O3 AND THE DOPED CARRIERS HAS BEEN STUDIED. CONCERNING THE ADSORPTION OF THE MO(VI), CO(II)AND NI(II) IONIC SPECIES IT WAS FOUND THAT THE FOWLER-GUGGENHEIM EQUATION, MODIFIED TO TAKE INTO ACCOUNT THE FACT THAT THE ADSORPTION TAKES PLACE ON CHARGED SURFACES, DESCRIBES QUITE WELL THE ISOTHERMS ACHIEVED. THIS SHOWS THE PRESENCE OF NON NEGLIGIBLE LATERAL INTERACTIONS BETWEEN THE ADSORBED SPECIES. THIS STUDYCLEARLY SHOWED THAT THE MODIFICATION ON Γ-AL2O3 WITH NA+, LI+ OR F- IONS IS A VERY FINE METHOD IN ORDER TO INCREASE THE ADSORPTIVE CAPACITY OF THIS CARRIERS FOR NEGATIVE OR POSITIVE IONIC SPECIES. THEREFORE, IT CAN BE USED FOR THE PREPARATION OF SUPPORTED CATALYSTS WITH HIGH ACTIVE SURFACE.","Η ΤΡΟΠΟΠΟΙΗΣΗ ΤΗΣ Γ-AL203 ΜΕ ΔΙΑΦΟΡΑ ΠΟΣΟΣΤΑ ΙΟΝΤΩΝ ΝΑΤΡΙΟΥ, ΛΙΘΙΟΥ ΚΑΙ ΦΘΟΡΙΟΥΧΡΗΣΙΜΟΠΟΙΗΘΗΚΕ ΓΙΑ ΤΗ ΡΥΘΜΙΣΗ ΤΟΥ ΣΗΜΕΙΟΥ ΜΗΔΕΝΙΚΟΥ ΦΟΡΤΙΟΥ (ΣΜΦ), ΤΩΝ ΣΤΑΘΕΡΩΝ ΕΠΙΦΑΝΕΙΑΚΗΣ ΟΞΥΤΗΤΑΣ ΚΑΙ ΤΗΣ ΣΥΓΚΕΝΤΡΩΣΗΣ ΤΩΝ ΦΟΡΤΙΣΜΕΝΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΟΜΑΔΩΝ, ΠΟΥ ΠΡΟΣΔΙΟΡΙΣΤΗΚΑΝ ΜΕ ΠΟΤΕΝΣΙΟΜΕΤΡΙΚΕΣ ΤΙΤΛΟΔΟΤΗΣΕΙΣ ΣΕ ΕΥΡΕΙΑ ΠΕΡΙΟΧΗ PH.ΜΕΛΕΤΗΘΗΚΕ ΑΚΟΜΗ Η ΠΡΟΣΡΟΦΗΣΗ ΙΟΝΙΚΩΝ ΕΙΔΩΝ ΤΩΝ ΕΝΕΡΓΩΝ ΙΟΝΤΩΝ ΜΟ(VI), CO(II) ΚΑΙ NI(II), ΣΤΗΝ ΕΠΙΦΑΝΕΙΑ ΤΗΣ Γ- AL203 ΚΑΙ ΤΩΝ ΤΡΟΠΟΠΟΙΗΜΕΝΩΝ ΔΕΙΓΜΑΤΩΝ. ΑΝΑΦΟΡΙΚΑ ΜΕ ΤΗΝ ΠΡΟΣΡΟΦΗΣΗ ΙΟΝΙΚΩΝ ΕΙΔΩΝ ΤΩΝ ΕΝΕΡΓΩΝ ΙΟΝΤΩΝ ΒΡΕΘΗΚΕ ΟΤΙ ΟΙ ΙΣΟΘΕΡΜΟΙ ΠΕΡΙΓΡΑΦΟΝΤΑΙ ΑΠΟ ΤΗΝ ΕΞΙΣΩΣΗ FOWLER-GUGGENHEIM ΤΡΟΠΟΠΟΙΗΜΕΝΗ ΓΙΑ ΤΗΝ ΠΡΟΣΡΟΦΗΣΗ ΣΕ ΦΟΡΤΙΣΜΕΝΕΣ ΕΠΙΦΑΝΕΙΕΣ . ΤΟ ΓΕΓΟΝΟΣ ΑΥΤΟ ΥΠΟΔΗΛΩΝΕΙ ΤΗΝ ΥΠΑΡΞΗ ΠΛΕΥΡΙΚΩΝΑΛΛΗΛΕΠΙΔΡΑΣΕΩΝ ΜΕΤΑΞΥ ΤΩΝ ΠΡΟΣΡΟΦΗΜΕΝΩΝ ΙΟΝΙΚΩΝ ΕΙΔΩΝ. Η ΜΕΛΕΤΗ ΑΥΤΗ ΕΔΕΙΞΕ ΟΤΙ Η ΤΡΟΠΟΠΟΙΗΣΗ ΤΗΣ Γ-AL203 ΜΕ ΙΟΝΤΑ NA+, LI+ 'H F- ΜΠΟΡΕΙ ΝΑ ΧΡΗΣΙΜΟΠΟΙΗΘΕΙ ΓΙΑ ΤΗΝ ΑΥΞΗΣΗ ΑΝΤΙΣΤΟΙΧΑ ΤΗΣ ΠΡΟΣΡΟΦΗΤΙΚΗΣ ΙΚΑΝΟΤΗΤΑΣ ΤΟΥ ΦΟΡΕΑ ΑΥΤΟΥ ΓΙΑ ΑΡΝΗΤΙΚΑ 'Η ΘΕΤΙΚΑ ΦΟΡΤΙΣΜΕΝΑ ΙΟΝΙΚΑ ΕΙΔΗ, ΣΥΝΕΠΩΣ ΓΙΑ ΤΗ ΣΥΝΘΕΣΗ ΚΑΤΑΛΥΤΩΝ ΜΕ ΜΕΓΑΛΗ ΕΝΕΡΓΟ ΕΠΙΦΑΝΕΙΑ."]},{"key":"dc:title","label":"Title","values":["ΡΥΘΜΙΣΗ ΤΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΦΟΡΤΙΩΝ ΚΑΤΑΛΥΤΙΚΩΝ ΦΟΡΕΩΝ ΜΕ ΤΗ ΧΡΗΣΗ ΤΡΟΠΟΠΟΙΗΤΩΝ","REGULATION OF THE SURFACE CHARGE OF CATALYTIC CARRIERS USING SEVERAL DOPANTS"]}]}],"canonical_facts":{"dc:creator":["Βορδώνης, Λεωνίδας"],"dc:date":["1988"],"dc:description":["THE DOPING OF Γ-AL203 AMOUNTS OF SODIUM, LITHIUM AND FLUORIDE IONS WAS USED FORREGULATING THE ZERO POINT OF CHARGE (ZPC), SURFACE ACIDITY CONSTANTS AND THE CONCENTRATION OF THE CHARGED SURFACE GROUPS, DETERMINED POTENTIOMETRICALLY, OVERA WIDE PH RANGE. THE ADSORPTION OF IONIC SPECIES CONTAINING THE CATALYTICALLY ACTIVE IONS MO(VI), CO(II) AND NI(II), ON THE SURFACE OF PURE Γ-AL2O3 AND THE DOPED CARRIERS HAS BEEN STUDIED. CONCERNING THE ADSORPTION OF THE MO(VI), CO(II)AND NI(II) IONIC SPECIES IT WAS FOUND THAT THE FOWLER-GUGGENHEIM EQUATION, MODIFIED TO TAKE INTO ACCOUNT THE FACT THAT THE ADSORPTION TAKES PLACE ON CHARGED SURFACES, DESCRIBES QUITE WELL THE ISOTHERMS ACHIEVED. THIS SHOWS THE PRESENCE OF NON NEGLIGIBLE LATERAL INTERACTIONS BETWEEN THE ADSORBED SPECIES. THIS STUDYCLEARLY SHOWED THAT THE MODIFICATION ON Γ-AL2O3 WITH NA+, LI+ OR F- IONS IS A VERY FINE METHOD IN ORDER TO INCREASE THE ADSORPTIVE CAPACITY OF THIS CARRIERS FOR NEGATIVE OR POSITIVE IONIC SPECIES. THEREFORE, IT CAN BE USED FOR THE PREPARATION OF SUPPORTED CATALYSTS WITH HIGH ACTIVE SURFACE.","Η ΤΡΟΠΟΠΟΙΗΣΗ ΤΗΣ Γ-AL203 ΜΕ ΔΙΑΦΟΡΑ ΠΟΣΟΣΤΑ ΙΟΝΤΩΝ ΝΑΤΡΙΟΥ, ΛΙΘΙΟΥ ΚΑΙ ΦΘΟΡΙΟΥΧΡΗΣΙΜΟΠΟΙΗΘΗΚΕ ΓΙΑ ΤΗ ΡΥΘΜΙΣΗ ΤΟΥ ΣΗΜΕΙΟΥ ΜΗΔΕΝΙΚΟΥ ΦΟΡΤΙΟΥ (ΣΜΦ), ΤΩΝ ΣΤΑΘΕΡΩΝ ΕΠΙΦΑΝΕΙΑΚΗΣ ΟΞΥΤΗΤΑΣ ΚΑΙ ΤΗΣ ΣΥΓΚΕΝΤΡΩΣΗΣ ΤΩΝ ΦΟΡΤΙΣΜΕΝΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΟΜΑΔΩΝ, ΠΟΥ ΠΡΟΣΔΙΟΡΙΣΤΗΚΑΝ ΜΕ ΠΟΤΕΝΣΙΟΜΕΤΡΙΚΕΣ ΤΙΤΛΟΔΟΤΗΣΕΙΣ ΣΕ ΕΥΡΕΙΑ ΠΕΡΙΟΧΗ PH.ΜΕΛΕΤΗΘΗΚΕ ΑΚΟΜΗ Η ΠΡΟΣΡΟΦΗΣΗ ΙΟΝΙΚΩΝ ΕΙΔΩΝ ΤΩΝ ΕΝΕΡΓΩΝ ΙΟΝΤΩΝ ΜΟ(VI), CO(II) ΚΑΙ NI(II), ΣΤΗΝ ΕΠΙΦΑΝΕΙΑ ΤΗΣ Γ- AL203 ΚΑΙ ΤΩΝ ΤΡΟΠΟΠΟΙΗΜΕΝΩΝ ΔΕΙΓΜΑΤΩΝ. ΑΝΑΦΟΡΙΚΑ ΜΕ ΤΗΝ ΠΡΟΣΡΟΦΗΣΗ ΙΟΝΙΚΩΝ ΕΙΔΩΝ ΤΩΝ ΕΝΕΡΓΩΝ ΙΟΝΤΩΝ ΒΡΕΘΗΚΕ ΟΤΙ ΟΙ ΙΣΟΘΕΡΜΟΙ ΠΕΡΙΓΡΑΦΟΝΤΑΙ ΑΠΟ ΤΗΝ ΕΞΙΣΩΣΗ FOWLER-GUGGENHEIM ΤΡΟΠΟΠΟΙΗΜΕΝΗ ΓΙΑ ΤΗΝ ΠΡΟΣΡΟΦΗΣΗ ΣΕ ΦΟΡΤΙΣΜΕΝΕΣ ΕΠΙΦΑΝΕΙΕΣ . ΤΟ ΓΕΓΟΝΟΣ ΑΥΤΟ ΥΠΟΔΗΛΩΝΕΙ ΤΗΝ ΥΠΑΡΞΗ ΠΛΕΥΡΙΚΩΝΑΛΛΗΛΕΠΙΔΡΑΣΕΩΝ ΜΕΤΑΞΥ ΤΩΝ ΠΡΟΣΡΟΦΗΜΕΝΩΝ ΙΟΝΙΚΩΝ ΕΙΔΩΝ. Η ΜΕΛΕΤΗ ΑΥΤΗ ΕΔΕΙΞΕ ΟΤΙ Η ΤΡΟΠΟΠΟΙΗΣΗ ΤΗΣ Γ-AL203 ΜΕ ΙΟΝΤΑ NA+, LI+ 'H F- ΜΠΟΡΕΙ ΝΑ ΧΡΗΣΙΜΟΠΟΙΗΘΕΙ ΓΙΑ ΤΗΝ ΑΥΞΗΣΗ ΑΝΤΙΣΤΟΙΧΑ ΤΗΣ ΠΡΟΣΡΟΦΗΤΙΚΗΣ ΙΚΑΝΟΤΗΤΑΣ ΤΟΥ ΦΟΡΕΑ ΑΥΤΟΥ ΓΙΑ ΑΡΝΗΤΙΚΑ 'Η ΘΕΤΙΚΑ ΦΟΡΤΙΣΜΕΝΑ ΙΟΝΙΚΑ ΕΙΔΗ, ΣΥΝΕΠΩΣ ΓΙΑ ΤΗ ΣΥΝΘΕΣΗ ΚΑΤΑΛΥΤΩΝ ΜΕ ΜΕΓΑΛΗ ΕΝΕΡΓΟ ΕΠΙΦΑΝΕΙΑ."],"dc:identifier":["10.12681/eadd/1253","http://hdl.handle.net/10442/hedi/1253"],"dc:language":["gre"],"dc:publisher":["Πανεπιστήμιο Πατρών","University of Patras"],"dc:subject":["Adsorption isotherms","ADSORPTION MECHANISM","CATALYTIC CARRIERS","MODIFIERS (SODIUM-LITHIUM-FLUORIDE)","Potentiometric titrations","SORPTION CATALYSTS","Supported catalysts","SUPPORTED MOLYBDENA CATALYSTS","SURFACE CHARGE","ΕΠΙΦΑΝΕΙΑΚΟ ΦΟΡΤΙΟ","Ισόθερμος προσρόφησης","ΚΑΤΑΛΥΤΕΣ ΠΡΟΣΡΟΦΗΣΗΣ","ΚΑΤΑΛΥΤΙΚΟΙ ΦΟΡΕΙΣ","ΜΗΧΑΝΙΣΜΟΣ ΠΡΟΣΡΟΦΗΣΗΣ","Ποτενσιομετρικές τιτλοδοτήσεις","Στηριζόμενοι καταλύτες","ΣΤΗΡΙΖΟΜΕΝΟΙ ΜΟΛΥΒΔΕΝΙΚΟΙ ΚΑΤΑΛΥΤΕΣ","ΤΡΟΠΟΠΟΙΗΤΕΣ (ΝΑΤΡΙΟ-ΛΙΘΙΟ-ΦΘΟΡΙΟ)","Φυσικές Επιστήμες","Natural Sciences","Χημεία","Chemical Sciences"],"dc:title":["ΡΥΘΜΙΣΗ ΤΩΝ ΕΠΙΦΑΝΕΙΑΚΩΝ ΦΟΡΤΙΩΝ ΚΑΤΑΛΥΤΙΚΩΝ ΦΟΡΕΩΝ ΜΕ ΤΗ ΧΡΗΣΗ ΤΡΟΠΟΠΟΙΗΤΩΝ","REGULATION OF THE SURFACE CHARGE OF CATALYTIC CARRIERS USING SEVERAL DOPANTS"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:49Z"}