| Autor: |
T.S. Baizhumanova, Z.T. Zheksenbaeva, S.A. Tungatarova, R.O. Sarsenova, M.A. Sadenova, S.A. Abdulina |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Chemical Engineering Transactions, Vol 52 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
2283-9216 |
| DOI: |
10.3303/CET1652120 |
| Popis: |
Results of the development of multicomponent oxide catalysts based on Ni, Cu, and Cr supported on 2 % Ce/?-Al2O3 by varying the concentration of the active phase of catalyst are presented in paper. It was found that the highest degree of toluene conversion (up to 98.8 %) is observed on the three- component Ni-Cu-Cr/2% Ce/?-Al2O3 catalyst with optimal metal ratio Ni : Cu : Cr = 1.0 : 3.0 : 0.1 at GHSV = 5×103 h-1 and a temperature of 723 - 773 K. The presence of CeO2 crystals, X-ray amorphous clusters (d = 20 – 100 Å) of variable valence metal oxides NiO and CuO as well as solid metal solutions CuO (NiO) was detected on the surface of optimum catalyst calcined at 873 K using XRD and electron microscopy methods. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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