NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts. Quarterly technical progress report, September 15--December 15, 1992 [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- 9 pages : digital, PDF file
- Additional Creators:
- Georgia State University, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Summary:
- We have investigated a series of Cu/Co catalysts supported on Titanium Dioxide. This study has sought to examine and compare the nature and effect of the supports Chromia and Titania (Cr₂O₃, and TiO₂) on the magnetic character of the Cu-Co-Cr and Cu-Co-TiO₂ catalysts. The magnetization results for Cu/Co, Cu/Co/Cr, Cu/Co/TiO₂ system are presented along with the magnetization data for the unsupported Cu/Co catalysts and data for supported catalysts. Pure cobalt metal has a magnetic moment of 161 emu/g. The measured emu values and the corresponding reduction percentages are given for the various catalysts investigated. The vibration sample magnetometer determines S{sub s}, the saturation magnetization, emu per gram of the composite sample. The magnetization values reported are emu per gram of cobalt in the composite. As such the data normally reflects the proportion of cobalt metal that is reduced to metallic form. However, if electronic exchanges occur between cobalt and other elements in the system, the magnetic moment itself differs from the assumed value of 161 emu/g Co then the emu value observed will be the resultant due to the electronic charge density modifications in Co as well as reduction to metallic state. Our earlier NMR studies reveal such electronic structural modifications occur for Cobalt in Cu-Co and Co-TiO₂ systems. The magnetization data in column 3 for Cu-Co-TiO₂ systems unambiguously shows such electron exchanges do occur between cobalt and titania.
- Report Numbers:
- E 1.99:doe/pc/89762--t17
doe/pc/89762--t17 - Subject(s):
- Other Subject(s):
- Note:
- Published through SciTech Connect.
12/31/1992.
"doe/pc/89762--t17"
"DE93009698"
Murty, A.N. - Type of Report and Period Covered Note:
- Quarterly; 10/01/1992 - 12/31/1992
- Funding Information:
- FG22-89PC89762
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