## Abstract A series of cobaltβmolybdenumβalumina catalysts was fabricated using as carriers Ξ»βAl~2~O~3~ doped with various amounts of sodium. Over these surfaces the H.D.S. of thiophene has been studied. A considerable decrease in the catalytic activity was observed with increasing Na^Β±^ content.
β¦ LIBER β¦
The studies of hydrodesulfurization activity over molybdenum catalysts supported on Al-MCM-41 modified by lanthanum
β Scribed by Wang, Yuhong ;Ihm, Son-Ki ;Lu, Guanzhong
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 428 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0133-1736
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## Abstract Detailed structural studies of vanadia supported on SiO~2~ and modified SiO~2~ (Si~0.8~M~0.2~O~2Β±~~__Ξ΄__~ where M = Al^3+^, Zr^4+^ and Y^3+^) were carried out using different techniques such as powder XRD, IR spectroscopy and ^29^Si, ^27^Al and ^51^V MAS NMR spectroscopy. All samples ex