An approach to preparing porous and hollow metal phosphides with higher hydrodesulfurization activity

2011 ◽  
Vol 184 (6) ◽  
pp. 1556-1560 ◽  
Author(s):  
Limin Song ◽  
Shujuan Zhang ◽  
Qingwu Wei
Keyword(s):  
Metal Phosphides ◽  
Hollow Metal ◽  
Hydrodesulfurization Activity

The Effect of γ-Al2O3, TiO2 and ZrO2 Supports on Hydrodesulfurization Activity of Transition-Metal Sulfides

2008 ◽  
Vol 73 (8-9) ◽  
pp. 945-955 ◽  
Author(s):  
Luděk Kaluža ◽  
Miroslav Zdražil
Keyword(s):  
Transition Metal ◽  
Aqueous Solutions ◽  
Model Reaction ◽  
Metal Sulfides ◽  
Vacuum Impregnation ◽  
Transition Metal Sulfides ◽  
Highly Active ◽  
System A ◽  
Benzothiophene Hydrodesulfurization ◽  
Hydrodesulfurization Activity

The transition metals V, Cr, Mn, Fe, Co, Ni, Mo, Ru, Rh, Pd, W, Re, Os, Ir and Pt were deposited from aqueous solutions of their salts onto conventional γ-Al2O3 and unconventional TiO2 and ZrO2 supports by vacuum impregnation and characterized in their sulfided form by a model reaction of benzothiophene hydrodesulfurization. It was found that the TiO2 and ZrO2 supports influenced predominantly positively the resulting activity of relatively low-active metals (V, Cr, Mn, Fe, Co, Ni, Mo, Ru, W and Os), whereas the highly active metals (Rh, Pd, Ir, Pt and Re) were influenced slightly negatively or not at all by those supports compared with the γ-Al2O3-supported system. A significant effect of the supports on the hydrodesulfurization-activity ranking of the transition-metal sulfides studied was ascertained.

Metal Phosphides Derived from Hydrotalcite Precursors toward the Selective Hydrogenation of Phenylacetylene

ACS Catalysis ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 5756-5765 ◽  
Author(s):  
Yudi Chen ◽  
Changming Li ◽  
Junyao Zhou ◽  
Shitong Zhang ◽  
Deming Rao ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Metal Phosphides

Eutectic Synthesis of High‐Entropy Metal Phosphides for Electrocatalytic Water Splitting

ChemSusChem ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 2038-2042 ◽  
Author(s):  
Xinhui Zhao ◽  
Zhimin Xue ◽  
Wenjun Chen ◽  
Yaqing Wang ◽  
Tiancheng Mu
Keyword(s):  
Water Splitting ◽  
High Entropy ◽  
Metal Phosphides

scholarly journals A nickel phosphide nanoalloy catalyst for the C-3 alkylation of oxindoles with alcohols

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shu Fujita ◽  
Kohei Imagawa ◽  
Sho Yamaguchi ◽  
Jun Yamasaki ◽  
Seiji Yamazoe ◽  
...  
Keyword(s):  
Precious Metal ◽  
Cerium Dioxide ◽  
Catalytic Performance ◽  
Significant Loss ◽  
Nickel Phosphide ◽  
Cooperative Catalysis ◽  
Metal Phosphides ◽  
Borrowing Hydrogen ◽  
High Yields ◽  
Transition Metal Phosphides

AbstractAlthough transition metal phosphides are well studied as electrocatalysts and hydrotreating catalysts, the application of metal phosphides in organic synthesis is rare, and cooperative catalysis between metal phosphides and supports remains unexplored. Herein, we report that a cerium dioxide-supported nickel phosphide nanoalloy (nano-Ni2P/CeO2) efficiently promoted the C-3 alkylation of oxindoles with alcohols without any additives through the borrowing hydrogen methodology. Oxindoles were alkylated with various alcohols to provide the corresponding C-3 alkylated oxindoles in high yields. This is the first catalytic system for the C-3 alkylation of oxindoles with alcohols using a non-precious metal-based heterogeneous catalyst. The catalytic activity of nano-Ni2P/CeO2 was comparable to that reported for precious metal-based catalysts. Moreover, nano-Ni2P/CeO2 was easily recoverable and reusable without any significant loss of activity. Control experiments revealed that the Ni2P nanoalloy and the CeO2 support functioned cooperatively, leading to a high catalytic performance.

Room-Temperature Reduction of Sulfur Hexafluoride with Metal Phosphides

2021 ◽  
Author(s):  
Blake Stanley Norman Huchenski ◽  
Alexander William Harrison Speed
Keyword(s):  
Alkali Metal ◽  
Room Temperature ◽  
Sulfur Hexafluoride ◽  
Temperature Reduction ◽  
Metal Phosphides

Upon treatment with sulfur hexafluoride, alkali metal diphenyl or dicyclohexyl phosphides are oxidized within seconds to tetraphenyl or tetracyclohexyl diphosphines. When bulky di-tert-butylphosphide is employed, fluorophosphine intermediates are detected. This...

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