http://hdl.handle.net/20.500.12128/132
Tytuł: | Ni-Supported Pd Nanoparticles with Ca Promoter : A New Catalyst for Low-Temperature Ammonia Cracking |
Autor: | Polański, Jarosław Bartczak, Piotr Ambrożkiewicz, Weronika Sitko, Rafał Siudyga, Tomasz Mianowski, Andrzej Szade, Jacek Balin, Katarzyna Lelątko, Józef |
Słowa kluczowe: | Metal nanoparticle; Nickel nanoparticle; Ammonia; Ammonia cracking |
Data wydania: | 2015 |
Źródło: | PLoS ONE, Vol. 10, iss. 8 (2015), art. no e0136805 |
Abstrakt: | In this paper we report a new nanometallic, self-activating catalyst, namely, Ni-supported Pd nanoparticles (PdNPs/Ni) for low temperature ammonia cracking, which was prepared using a novel approach involving the transfer of nanoparticles from the intermediate carrier, i.e. nano-spherical SiO2, to the target carrier technical grade Ni (t-Ni) or high purity Ni (p-Ni) grains. The method that was developed allows a uniform nanoparticle size distribution (4,4±0.8 nm) to be obtained. Unexpectedly, the t-Ni-supported Pd NPs, which seemed to have a surface Ca impurity, appeared to be more active than the Ca-free (p-Ni) system. A comparison of the novel PdNPs/Ni catalyst with these reported in the literature clearly indicates the much better hydrogen productivity of the new system, which seems to be a highly efficient, flexible and durable catalyst for gas-phase heterogeneous ammonia cracking in which the TOF reaches a value of 2615 mmolH2/gPd min (10,570 molNH3/molPd(NP) h) at 600°C under a flow of 12 dm3/h (t-Ni). |
URI: | http://hdl.handle.net/20.500.12128/132 |
DOI: | 10.1371/journal.pone.0136805 |
ISSN: | 1932-6203 |
Pojawia się w kolekcji: | Artykuły (WNŚiT) |
Plik | Opis | Rozmiar | Format | |
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Polanski_Ni_Supported_Pd_Nanoparticles_with_Ca_Promoter.pdf | 1,13 MB | Adobe PDF | Przejrzyj / Otwórz |
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