FCC Catalysts: Cu(II)-Exchanged USY-Type. Stability, Dealumination, and Acid Sites after Thermal and Hydrothermal Treatment before and after Vanadium Impregnation
| dc.contributor.author | Tsiatouras, V. A. | en |
| dc.contributor.author | Evmiridis, N. P. | en |
| dc.date.accessioned | 2015-11-24T16:37:58Z | |
| dc.date.available | 2015-11-24T16:37:58Z | |
| dc.identifier.issn | 0888-5885 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/7983 | |
| dc.rights | Default Licence | - |
| dc.subject | electron-spin-resonance | en |
| dc.subject | cracking catalysts | en |
| dc.subject | y-zeolites | en |
| dc.subject | paramagnetic-resonance | en |
| dc.subject | adsorption | en |
| dc.subject | deposition | en |
| dc.subject | exchange | en |
| dc.subject | yields | en |
| dc.subject | zsm-5 | en |
| dc.subject | epr | en |
| dc.title | FCC Catalysts: Cu(II)-Exchanged USY-Type. Stability, Dealumination, and Acid Sites after Thermal and Hydrothermal Treatment before and after Vanadium Impregnation | en |
| heal.abstract | NaH-USY, H-USY, and Cu(II)-exchanged NaH-USY samples prepared were studied for ion-exchange mass balance, framework aluminum microenvironments (FAI-MEs), and number and strength of acid sites (AS) generated by the increase of the Cu(Il)-exchange after thermal treatment (500 degrees C) and lost under hydrothermal treatment conditions in the presence and in the absence of V species. From the data obtained, conclusions were drawn that (a) the nature and number of Cu(II) species exchanged enter FAI-MEs which can compensate their charge, (b) the strength and number of generated AS in CuNaH-USY samples after thermal treatment is related to the nature and number of Cu(Il) species accommodated in the corresponding FAI-MEs, (c) the AS lost during the hydrothermal treatment depend on the nature of counterion involved, and (d) in the presence of V species, an extra loss, restricted to strong AS, takes place. Differences of lost AS and structure - stability during hydrothermal treatment in the presence and absence of V species give evidence of V catalytic action and support the implication of the nature of counterion species for the degree of structure breakdown. These findings lead to the proposed reaction pathway for the chemistry of V detrimental effect. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1021/Ie8008605 | - |
| heal.identifier.secondary | <Go to ISI>://000261279700035 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/ie8008605 | - |
| heal.journalName | Industrial & Engineering Chemistry Research | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2008 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
Αρχεία
Φάκελος/Πακέτο αδειών
1 - 1 of 1
Φόρτωση...
- Ονομα:
- license.txt
- Μέγεθος:
- 1.74 KB
- Μορφότυπο:
- Item-specific license agreed upon to submission
- Περιγραφή: