1. Preparation of Ni 2 P/Al 2 O 3 by temperature-programmed reduction of a phosphate precursor with a low P/Ni ratio
- Author
-
Yongying Chen, Anjie Wang, Xinping Duan, Xiang Li, Feng Jianpeng, Roel Prins, and Guo Jingyu
- Subjects
Phosphorus ,Inorganic chemistry ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Phosphate ,01 natural sciences ,Catalysis ,0104 chemical sciences ,law.invention ,chemistry.chemical_compound ,Cerium ,chemistry ,Phosphorus oxide ,law ,Dibenzothiophene ,Calcination ,Reactivity (chemistry) ,Physical and Theoretical Chemistry ,Temperature-programmed reduction ,0210 nano-technology - Abstract
Ni 2 P that was highly active in the hydrodesulfurization of dibenzothiophene was obtained by reduction of a phosphate precursor with a P/Ni molar ratio as low as 1.2 over cerium oxide-modified Al 2 O 3 (Ce–Al 2 O 3 ) and macromesoporous Al 2 O 3 (M-Al 2 O 3 ). 27 Al MAS NMR revealed that this is likely due to the low reactivity of pentahedrally coordinated Al 3+ (Al(P)) with phosphorus oxide. Because the major Al species in Ce–Al 2 O 3 and M-Al 2 O 3 is Al(P), less phosphorus is consumed by the Al 2 O 3 support upon calcination and thus more phosphorus is available for the formation of Ni 2 P during the reduction stage.
- Published
- 2016