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http://nopr.niscpr.res.in/handle/123456789/29831| Title: | The role of metal-support interactions in sintering and themal deactivation of HDS/HDN catalysts |
| Authors: | Marinkovic-Neducin, R Putanov, P |
| Issue Date: | Apr-1995 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The sintering process in CoO-MoO3/Al2O3 and NiO-MoO3/Al2O3 catalysts for HDS/HDN has been studied using two industrial catalysts and their model systems, subjected to thermal treatment in Qxidizingand reducing atmospheres. The critical role of oxidizing atmosphere for rapid sintering has been found to be connected with the formation of free MoO3 phase, distinguished by high mobility in lower temperature regime and intermediary presence of liquid phase at higher temperatures. A prerequisite for HDS/HDN catalyst sintering during regeneration is the destruction of active monolayer structure that results in formation of the precursor of MoO3 phase. Specific role of metal-support interactions in this deactivation mechanism has been shown by comparative investigation on model systems prepared on more inert supports (ɑ-Al2O3 and SiO2). |
| Page(s): | 83-88 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.02(2) [April 1995] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 2(2) 83-88.pdf | 1.16 MB | Adobe PDF | View/Open |
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