Wszystkie pola: spent iron catalyst - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Utilization of spent iron catalyst for ammonia synthesis
Autorzy:: Arabczyk, W.
Narkiewicz, U.
Lendzion-Bieluń, Z.
Moszyński, D.
Pełech, I.
Ekiert, E.
Podsiadły, M.
Pelka, R.
Jędrzejewski, R.
Moszyñska, I.
Sibera, D.
Powiązania:: https://bibliotekanauki.pl/articles/778207.pdf
Data publikacji:: 2007
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: katalizator żelazowy
azotki żelaza
nanorurka węglowa
nanowłókna
iron catalyst
iron nitrides
carbon nanotubes
nanofibers
Opis:: Several methods of the utilization of spent iron catalyst for ammonia synthesis have been presented. The formation of iron nitrides of different stoichiometry by direct nitriding in ammonia in the range of temperatures between 350°C and 450°C has been shown. The preparation methods of carbon nanotubes and nanofibers where iron catalyst catalyse the decomposition of hydrocarbons have been described. The formation of magnetite embedded in a carbon material by direct oxidation of carburized iron catalyst has been also presented.
Źródło:: Polish Journal of Chemical Technology; 2007, 9, 3; 108-113
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The possibility of implementation of spent iron catalyst for ammonia synthesis
Autorzy:: Ekiert, E.A.
Pelka, R.
Lubkowski, K.
Arabczyk, W.
Powiązania:: https://bibliotekanauki.pl/articles/779200.pdf
Data publikacji:: 2009
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: odpadowy katalizator żelazowy
pasywacja
nawęglanie
spent iron catalyst
passivation
carburization
Opis:: An iron catalyst used in the ammonia synthesis is pyrophoric in its reactive, reduced form. Before further use the catalyst has to be passivated. Results of the research on the iron catalyst - its passivation, re-use as a catalyst in other processes and implementation as a substrate to obtain new nanocrystalline materials have been presented in the paper.
Źródło:: Polish Journal of Chemical Technology; 2009, 11, 1; 28-33
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Removal of vanadium, potassium and iron from spent vanadium catalyst by leaching with citric acid at atmospheric pressure
Autorzy:: Mazurek, K.
Powiązania:: https://bibliotekanauki.pl/articles/778659.pdf
Data publikacji:: 2014
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: citric acid
sulphur oxide
spent vanadium catalysts
leaching
recovery
Opis:: The effect of time, temperature, the catalyst particle size and the ratio of the catalyst weight to the leaching solution volume (S:L) on the treatment of spent vanadium catalyst components was determined using citric acid solutions at atmospheric pressure. The optimal parameters of catalyst leaching in 10% acid solutions at atmospheric pressure are: T = 323 K, t = 4 h, the particle size of less than 0.160 mm, the S:L ratio below 0.1. Under these conditions it was possible to dissolve about 90% of vanadium and potassium compounds and more than 60% of iron compounds contained in the catalyst. These results fall within the scope of research on a comprehensive method for recovering spent vanadium catalyst components.
Źródło:: Polish Journal of Chemical Technology; 2014, 16, 1; 59-62
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Leaching of vanadium(V) from the mixture after potassium metavanadate synthesis based on KCl and spent vanadium catalyst
Autorzy:: Kiełkowska, U.
Białowicz, K.
Drużyński, S.
Powiązania:: https://bibliotekanauki.pl/articles/780081.pdf
Data publikacji:: 2013
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: KVO3 synthesis
spent vanadium catalyst
leaching
recovery
iron
vanadium(V)
Opis:: The results of the leaching of vanadium(V) from the mixture after potassium metavanadate synthesis from KCl and spent vanadium catalyst in the presence of steam were presented. Spent vanadium catalyst was obtained from the waste storage of a chemical plant producing sulfuric acid(VI) by the contact method. The reaction mixture was leached using different solutions: 1 M Na2CO3, 20% CO(NH2)2, 15% NaOH, 15% KOH, 2 M H2SO4. The effect of time and temperature was studied. The results showed that for reaction mixture leached for 4 h at 303 K in the presence of 15% sodium hydroxide solution at a liquid:solid ratio of 10:1, the extent of leaching of vanadium(V) was 95.43%.
Źródło:: Polish Journal of Chemical Technology; 2013, 15, 4; 33-35
1509-8117
1899-4741
Pojawia się w:: Polish Journal of Chemical Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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