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| Content Provider | Springer Nature Link |
|---|---|
| Author | Sohn, Jong Rack Ryu, Sam Gon |
| Copyright Year | 2001 |
| Abstract | Chromium oxide supported on zirconia was prepared by dry impregnation of powdered Zr(OH)4with an aqueous solution of (NH4)2CrO4 followed by calcining in air. Upon the addition of only a small amount of chromium oxide (1 wt% Cr) to ZrO2, both the acidity and acid strength of the catalyst increased remarkably. The redox and catalytic behaviors of the samples were investigated through XPS and the reaction of cumene using a pulse technique. It was found that Cr6+ species existing on the surface of catalyst were responsible for the formation of strong acid sites and the catalytic activity for cracking of cumene. However, the Cr6+ species were easily reduced to Cr3+ species during the catalytic reaction of cumene and the reduced Cr3+ species were active for α-methylstyrene formation due to the dehydrogenation of cumene. The reduced Cr3+ species could be reoxidized by treatment with O2 and subsequently the reoxidized catalyst exhibited catalytic activity for the cracking reaction of cumene. |
| Starting Page | 105 |
| Ending Page | 110 |
| Page Count | 6 |
| File Format | |
| ISSN | 1011372X |
| Journal | Catalysis Letters |
| Volume Number | 74 |
| Issue Number | 1-2 |
| e-ISSN | 1572879X |
| Language | English |
| Publisher | Kluwer Academic Publishers-Plenum Publishers |
| Publisher Date | 2001-01-01 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Physical Chemistry Industrial Chemistry/Chemical Engineering Pharmacy |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Catalysis |
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