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Nickel Phosphide Na...
Nickel Phosphide Nanoparticles for Selective Hydrogenation of SO2 to H2S
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Lu, Xinnan (author)
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Baker, Mark A. (author)
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Anjum, Dalaver H. (author)
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- Papawassiliou, Wassilios (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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- Pell, Andrew J. (author)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK),Université Claude Bernard Lyon, France
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Fardis, Michael (author)
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Papavassiliou, Georgios (author)
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Hinder, Steven J. (author)
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Abdullah Ali Gaber, Safa (author)
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Abdullah Ali Gaber, Dina (author)
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Al Wahedi, Yasser (author)
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Polychronopoulou, Kyriaki (author)
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(creator_code:org_t)
- 2021-06-17
- 2021
- English.
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In: ACS Applied Nano Materials. - : American Chemical Society (ACS). - 2574-0970. ; 4:7, s. 6568-6582
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Highly mesoporous SiO2-encapsulated NixPy crystals, where (x, y) = (5, 4), (2, 1), and (12, 5), were successfully synthesized by adopting a thermolytic method using oleylamine (OAm), trioctylphosphine (TOP), and trioctylphosphine oxide (TOPO). The Ni5P4@SiO2 system shows the highest reported activity for the selective hydrogenation of SO2 toward H2S at 320 degrees C (96% conversion of SO2 and 99% selectivity to H2S), which was superior to the activity of the commercial CoMoS@Al2O3 catalyst (64% conversion of SO2 and 71% selectivity to H2S at 320 degrees C). The morphology of the Ni5P4 crystal was finely tuned via adjustment of the synthesis parameters receiving a wide spectrum of morphologies (hollow, macroporous-network, and SiO2-confined ultrafine clusters). Intrinsic characteristics of the materials were studied by Xray diffraction, high-resolution transmission electron microscopy/scanning transmission electron microscopy-high-angle annular dark-field imaging, energydispersive X-ray spectroscopy, the Brunauer-Emmett-Teller method, H-2 temperature-programmed reduction, X-ray photoelectron spectroscopy, and experimental and calculated P-31 magic-angle spinning solid-state nuclear magnetic resonance toward establishing the structure-performance correlation for the reaction of interest. Characterization of the catalysts after the SO2 hydrogenation reaction proved the preservation of the morphology, crystallinity, and Ni/P ratio for all the catalysts.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering (hsv//eng)
Keyword
- nickel phosphide (NixPy)
- nanoparticles
- morphology and size control
- selective hydrogenation
- SO2 to H2S
Publication and Content Type
- ref (subject category)
- art (subject category)
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