Ullmann's Encyclopedia of Industrial Chemistry 2000
DOI: 10.1002/14356007.a17_293
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Nitric Acid, Nitrous Acid, and Nitrogen Oxides

Abstract: The article contains sections titled: 1. Nitric Acid 1.1. Introduction … Show more

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Cited by 64 publications
(64 citation statements)
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“…This elongated induction period is probably caused by a shift of the equilibrated decomposition of HNO 3 to NO 2 towards the left-hand-side at higher O 2 pressure [Reaction (1)]. Indeed, NO 2 is able to form HNO 2 by Reaction (2), [4,16] the key oxidizing species in the system, and a shift of the equilibrium in Reaction (1) will hence reduce the HNO 2 concentration. Note that the amberlyst catalyst accelerates the HNO 3 decomposition to NO 2 (see Supporting Information), thereby speeding up the formation of active species.…”
mentioning
confidence: 99%
“…This elongated induction period is probably caused by a shift of the equilibrated decomposition of HNO 3 to NO 2 towards the left-hand-side at higher O 2 pressure [Reaction (1)]. Indeed, NO 2 is able to form HNO 2 by Reaction (2), [4,16] the key oxidizing species in the system, and a shift of the equilibrium in Reaction (1) will hence reduce the HNO 2 concentration. Note that the amberlyst catalyst accelerates the HNO 3 decomposition to NO 2 (see Supporting Information), thereby speeding up the formation of active species.…”
mentioning
confidence: 99%
“…Menurut Ahn et.al [4] larutan asam nitrat dapat meningkatkan kelarutan ion kalsium dalam susu Ca(OH)2 dan asam nitrat merupakan asam kuat yang dapat bereaksi keras dengan oksida logam seperti kalsium oksida membentuk garam yang mudah larut [5] .…”
Section: Pendahuluanunclassified
“…Hasil perlakuan disaring dan filtrat direaksikan dengan larutan natrium karbonat membentuk endapan kalsium karbonat (PCC). [4] larutan asam nitrat dapat meningkatkan kelarutan ion kalsium dalam susu Ca(OH)2 dan asam nitrat merupakan asam kuat yang dapat bereaksi keras dengan oksida logam seperti kalsium oksida membentuk garam yang mudah larut [5] . Filtrat ditambahkan larutan Na2CO3 sebanyak 150 mL dengan variasi konsentrasi 0,25; 0,50; 1,00; 1,50; dan 2,00 M dengan kecepatan alir 2,5 mL/menit.…”
Section: Pendahuluanunclassified
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“…NO und NO 2 kçnnen ebenfalls verwendet werden, um die Induktionszeit zu verkürzen, was auf eine effiziente Interkonversion der Stickstoffspezies hinweist. [15] Interessanterweise flacht die Reaktion nach 6 h bei 50 % Umsatz ab, [4,16] HNO 2 zu bilden, das zentrale Oxidationsmittel im System. Somit wird durch eine Verschiebung in der Gleichgewichtsreaktion (1) die Konzentration an HNO 2 im System verringert.…”
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