磷化钴和磷硫化钴的制备及其萘加氢和电催化析氢性能
Preparation of cobalt phosphides and cobalt phosphosulfides for naphthalene hydrogenation and electrocatalytic hydrogen evolution reaction
Cobalt phosphides were prepared by temperature-programed reduction of cobalt phosphate precursors,and sulfur was introduced to the cobalt phosphides by the sulfidation of these catalysts with dimethyl disulfide (DMDS) and the reduction of mixtures of Na4P2S6 and CoCl2·6H2O.The results showed that the reduction of cobalt phosphate precursors with P/Co molar ratios [n(P)/n(Co)] of 0.5 and 1.0 yielded Co2P and CoP,respectively.CoP was obtained by reducing the mixture of Na4P2S6 and CoCl2·6H2O with n(P)/n(Co) above 1.5.The sulfidation of the cobalt phosphides with DMDS resulted in surface sulfidation,whereas the reduction of the mixtures of Na4P2S6 and CoCl2·6H2O is likely to form phosphosulfide phases.Depending on the n(P)/n(Co) ratios of the precursors,the activity of these catalysts in naphthalene hydrogenation and hydrogen evolution reaction (HER) decreased in the same order 1.0>1.6>0.5.The hydrogenation and HER activities of Co2P were lower than those of CoP and mixtures of CoP and Co2P.The cobalt phosphosulfide prepared by reduction of the mixture of Na4P2S6 and CoCl2·6H2O with proper n(P)/n(Co) ratio showed the highest performances in the two reactions.
cobalt phosphide / cobalt phosphosulfide / sulfidation / naphthalene hydrogenation / hydrogen evolution reaction
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| [3] |
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| [4] |
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| [5] |
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| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
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| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
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| [19] |
|
| [20] |
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| [21] |
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| [22] |
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| [23] |
胡洋, 李翔, 盛强, |
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| [28] |
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| [29] |
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国家自然科学基金(22108207)
重质油国家重点实验室开放基金(SKLHOP202202005)
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