The Reaction of Uranyl Ion with Propionaldehyde in the presence and absence of light

A study was made of the photochemical reduction of the uranyl ion by propionaldehyde in aqueous and nonaqueous media. The products of the photochemical reaction in propionaldehyde solution enter into a reverse reaction following an induction period. Products formed in aqueous media apparently enter...

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Veröffentlicht in:Z. Anorg. Allg. Chem. 367: 102-12(May 1969) 1969, Vol.367 (1-2), p.102-112
Hauptverfasser: Haas, R. M., Gayer, K. -H.
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description A study was made of the photochemical reduction of the uranyl ion by propionaldehyde in aqueous and nonaqueous media. The products of the photochemical reaction in propionaldehyde solution enter into a reverse reaction following an induction period. Products formed in aqueous media apparently enter into some reaction which prevent them from undergoing a reverse reaction. Conductivity measurements of solutions of UO2(NO3)2 · 6 H2O in propionaldehyde, indicate that dissociation of the uranyl salt occurs. The rate equations for the formation and disapearance of uranous ion in propionaldehyde were discussed. The probable mechanisms for the forward and reverse reactions in terms of only those species which change oxidation states are: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} {\rm Forward}\,\,\,\,{\rm U(VI) + (R) + h}\nu \to {\rm U(V) + (O)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2}\,{\rm U(V) + acid}\,\,\,\,\quad \to \,{\rm U(IV) + U(VI) + Products} \\ {\rm Reverse}\,\,\,\,\,{\rm U(IV) + (O)}\,\,\,\,\,\,\,\,\quad\to {\rm U(V) + (R)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2U(V) + acid}\,\,\,\,\,\quad \to {\rm U(VI) + U(IV) + Products} \\ \end{array} $$\end{document} The symbols (R) and (O) refer to the reduced and oxidized forms respectively. The overall quantum yield for the U(VI) to U(IV) reaction was found to be at least 0.72. Es wurde die photochemische Reduktion des Uranylions, UO 22+, durch Propionaldehyd in wäßrigem und nichtwäßrigem Medium untersucht. In Propionaldehyd als Medium gehen die Reaktionsprodukte nach einer Induktionsperiode eine Rückreaktion ein, in wäßrigem Medium dagegen nicht. Leitfähigkeitsmessungen zeigen, daß UO2(NO3)2 · 6 H2O in Propionaldehyd dissoziiert. Das Geschwindigkeitsgesetz der UIV‐Bildung bzw. ‐Wiederabnahme werden diskutiert und der wahrscheinliche Mechanismus der Vorwärts‐ und Rückreaktionen sind in „Summary”︁ formuliert. Die Gesamtquantenausbeute der UVI → UIV‐Reaktion liegt bei mindestens 0,72.
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M. ; Gayer, K. -H.</creator><creatorcontrib>Haas, R. M. ; Gayer, K. -H. ; Wayne State Univ., Detroit</creatorcontrib><description>A study was made of the photochemical reduction of the uranyl ion by propionaldehyde in aqueous and nonaqueous media. The products of the photochemical reaction in propionaldehyde solution enter into a reverse reaction following an induction period. Products formed in aqueous media apparently enter into some reaction which prevent them from undergoing a reverse reaction. Conductivity measurements of solutions of UO2(NO3)2 · 6 H2O in propionaldehyde, indicate that dissociation of the uranyl salt occurs. The rate equations for the formation and disapearance of uranous ion in propionaldehyde were discussed. The probable mechanisms for the forward and reverse reactions in terms of only those species which change oxidation states are: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} {\rm Forward}\,\,\,\,{\rm U(VI) + (R) + h}\nu \to {\rm U(V) + (O)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2}\,{\rm U(V) + acid}\,\,\,\,\quad \to \,{\rm U(IV) + U(VI) + Products} \\ {\rm Reverse}\,\,\,\,\,{\rm U(IV) + (O)}\,\,\,\,\,\,\,\,\quad\to {\rm U(V) + (R)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2U(V) + acid}\,\,\,\,\,\quad \to {\rm U(VI) + U(IV) + Products} \\ \end{array} $$\end{document} The symbols (R) and (O) refer to the reduced and oxidized forms respectively. The overall quantum yield for the U(VI) to U(IV) reaction was found to be at least 0.72. Es wurde die photochemische Reduktion des Uranylions, UO 22+, durch Propionaldehyd in wäßrigem und nichtwäßrigem Medium untersucht. In Propionaldehyd als Medium gehen die Reaktionsprodukte nach einer Induktionsperiode eine Rückreaktion ein, in wäßrigem Medium dagegen nicht. Leitfähigkeitsmessungen zeigen, daß UO2(NO3)2 · 6 H2O in Propionaldehyd dissoziiert. Das Geschwindigkeitsgesetz der UIV‐Bildung bzw. ‐Wiederabnahme werden diskutiert und der wahrscheinliche Mechanismus der Vorwärts‐ und Rückreaktionen sind in „Summary”︁ formuliert. Die Gesamtquantenausbeute der UVI → UIV‐Reaktion liegt bei mindestens 0,72.</description><identifier>ISSN: 0044-2313</identifier><identifier>EISSN: 1521-3749</identifier><identifier>DOI: 10.1002/zaac.19693670111</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>ALDEHYDES ; CATIONS ; N20210 -Chemistry-Inorganic, Organic, &amp; Physical Chemistry-Chemical Properties ; PHOTOLYSIS ; PROPIONALDEHYDE/photoinduced chemical reactions with uranyl ions, kinetics of uv ; PROPIONIC ACID ; RADIATION CHEMISTRY ; REACTION KINETICS ; REDUCTION ; SOLUTIONS ; ULTRAVIOLET RADIATION ; ULTRAVIOLET RADIATION/ effects on reduction of uranyl ions by propionaldehyde in aqueous and nonaqueous solutions ; URANYL COMPOUNDS ; URANYL IONS/photoinduced reduction by propionaldehyde in aqueous and nonaqueous solutions, kinetics of uv ; WATER</subject><ispartof>Z. Anorg. Allg. 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M.</creatorcontrib><creatorcontrib>Gayer, K. -H.</creatorcontrib><creatorcontrib>Wayne State Univ., Detroit</creatorcontrib><title>The Reaction of Uranyl Ion with Propionaldehyde in the presence and absence of light</title><title>Z. Anorg. Allg. Chem. 367: 102-12(May 1969)</title><addtitle>Z. anorg. allg. Chem</addtitle><description>A study was made of the photochemical reduction of the uranyl ion by propionaldehyde in aqueous and nonaqueous media. The products of the photochemical reaction in propionaldehyde solution enter into a reverse reaction following an induction period. Products formed in aqueous media apparently enter into some reaction which prevent them from undergoing a reverse reaction. Conductivity measurements of solutions of UO2(NO3)2 · 6 H2O in propionaldehyde, indicate that dissociation of the uranyl salt occurs. The rate equations for the formation and disapearance of uranous ion in propionaldehyde were discussed. The probable mechanisms for the forward and reverse reactions in terms of only those species which change oxidation states are: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} {\rm Forward}\,\,\,\,{\rm U(VI) + (R) + h}\nu \to {\rm U(V) + (O)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2}\,{\rm U(V) + acid}\,\,\,\,\quad \to \,{\rm U(IV) + U(VI) + Products} \\ {\rm Reverse}\,\,\,\,\,{\rm U(IV) + (O)}\,\,\,\,\,\,\,\,\quad\to {\rm U(V) + (R)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2U(V) + acid}\,\,\,\,\,\quad \to {\rm U(VI) + U(IV) + Products} \\ \end{array} $$\end{document} The symbols (R) and (O) refer to the reduced and oxidized forms respectively. The overall quantum yield for the U(VI) to U(IV) reaction was found to be at least 0.72. Es wurde die photochemische Reduktion des Uranylions, UO 22+, durch Propionaldehyd in wäßrigem und nichtwäßrigem Medium untersucht. In Propionaldehyd als Medium gehen die Reaktionsprodukte nach einer Induktionsperiode eine Rückreaktion ein, in wäßrigem Medium dagegen nicht. Leitfähigkeitsmessungen zeigen, daß UO2(NO3)2 · 6 H2O in Propionaldehyd dissoziiert. Das Geschwindigkeitsgesetz der UIV‐Bildung bzw. ‐Wiederabnahme werden diskutiert und der wahrscheinliche Mechanismus der Vorwärts‐ und Rückreaktionen sind in „Summary”︁ formuliert. Die Gesamtquantenausbeute der UVI → UIV‐Reaktion liegt bei mindestens 0,72.</description><subject>ALDEHYDES</subject><subject>CATIONS</subject><subject>N20210 -Chemistry-Inorganic, Organic, &amp; Physical Chemistry-Chemical Properties</subject><subject>PHOTOLYSIS</subject><subject>PROPIONALDEHYDE/photoinduced chemical reactions with uranyl ions, kinetics of uv</subject><subject>PROPIONIC ACID</subject><subject>RADIATION CHEMISTRY</subject><subject>REACTION KINETICS</subject><subject>REDUCTION</subject><subject>SOLUTIONS</subject><subject>ULTRAVIOLET RADIATION</subject><subject>ULTRAVIOLET RADIATION/ effects on reduction of uranyl ions by propionaldehyde in aqueous and nonaqueous solutions</subject><subject>URANYL COMPOUNDS</subject><subject>URANYL IONS/photoinduced reduction by propionaldehyde in aqueous and nonaqueous solutions, kinetics of uv</subject><subject>WATER</subject><issn>0044-2313</issn><issn>1521-3749</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1969</creationdate><recordtype>article</recordtype><recordid>eNqFkM9LwzAUx4MoOKd3j8F79aVJfx08jKJzsKmTTcFLSNLURms7ksCsf70dFdGTp_ce7_t5PD4InRI4JwDhxacQ6pxkcUbjBAghe2hEopAENGHZPhoBMBaElNBDdOTcKwAQiKIRWq0qjR-0UN60DW5LvLai6Wo866et8RW-t-2mX4m60FVXaGwa7HtkY7XTjdJYNAUWcuh7vDYvlT9GB6WonT75rmO0vr5a5TfB_G46yyfzQNG4f03QlEWaQSZDJUhEmYRQFhSYAiYTodJSF0AzRgmDSJO0LGUiWSILUcZhzCgdo7Phbuu84U4Zr1Wl2qbRynNGKEvTXQiGkLKtc1aXfGPNu7AdJ8B36vhOHf-lrkcuB2Rrat39m-fPk0n-lw8G3jivP354Yd94nNAk4k-3U74k02W-eJzzBf0Ci0qCZQ</recordid><startdate>1969</startdate><enddate>1969</enddate><creator>Haas, R. M.</creator><creator>Gayer, K. -H.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>1969</creationdate><title>The Reaction of Uranyl Ion with Propionaldehyde in the presence and absence of light</title><author>Haas, R. M. ; Gayer, K. -H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3621-a3845e409b2ca1534b02bd304c04b7ac8fed039431405e18ffb7b47bdaf626433</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1969</creationdate><topic>ALDEHYDES</topic><topic>CATIONS</topic><topic>N20210 -Chemistry-Inorganic, Organic, &amp; Physical Chemistry-Chemical Properties</topic><topic>PHOTOLYSIS</topic><topic>PROPIONALDEHYDE/photoinduced chemical reactions with uranyl ions, kinetics of uv</topic><topic>PROPIONIC ACID</topic><topic>RADIATION CHEMISTRY</topic><topic>REACTION KINETICS</topic><topic>REDUCTION</topic><topic>SOLUTIONS</topic><topic>ULTRAVIOLET RADIATION</topic><topic>ULTRAVIOLET RADIATION/ effects on reduction of uranyl ions by propionaldehyde in aqueous and nonaqueous solutions</topic><topic>URANYL COMPOUNDS</topic><topic>URANYL IONS/photoinduced reduction by propionaldehyde in aqueous and nonaqueous solutions, kinetics of uv</topic><topic>WATER</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Haas, R. M.</creatorcontrib><creatorcontrib>Gayer, K. -H.</creatorcontrib><creatorcontrib>Wayne State Univ., Detroit</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Z. Anorg. Allg. Chem. 367: 102-12(May 1969)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Haas, R. M.</au><au>Gayer, K. -H.</au><aucorp>Wayne State Univ., Detroit</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Reaction of Uranyl Ion with Propionaldehyde in the presence and absence of light</atitle><jtitle>Z. Anorg. Allg. Chem. 367: 102-12(May 1969)</jtitle><addtitle>Z. anorg. allg. Chem</addtitle><date>1969</date><risdate>1969</risdate><volume>367</volume><issue>1-2</issue><spage>102</spage><epage>112</epage><pages>102-112</pages><issn>0044-2313</issn><eissn>1521-3749</eissn><abstract>A study was made of the photochemical reduction of the uranyl ion by propionaldehyde in aqueous and nonaqueous media. The products of the photochemical reaction in propionaldehyde solution enter into a reverse reaction following an induction period. Products formed in aqueous media apparently enter into some reaction which prevent them from undergoing a reverse reaction. Conductivity measurements of solutions of UO2(NO3)2 · 6 H2O in propionaldehyde, indicate that dissociation of the uranyl salt occurs. The rate equations for the formation and disapearance of uranous ion in propionaldehyde were discussed. The probable mechanisms for the forward and reverse reactions in terms of only those species which change oxidation states are: \documentclass{article}\pagestyle{empty}\begin{document}$$ \begin{array}{l} {\rm Forward}\,\,\,\,{\rm U(VI) + (R) + h}\nu \to {\rm U(V) + (O)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2}\,{\rm U(V) + acid}\,\,\,\,\quad \to \,{\rm U(IV) + U(VI) + Products} \\ {\rm Reverse}\,\,\,\,\,{\rm U(IV) + (O)}\,\,\,\,\,\,\,\,\quad\to {\rm U(V) + (R)} \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\quad{\rm 2U(V) + acid}\,\,\,\,\,\quad \to {\rm U(VI) + U(IV) + Products} \\ \end{array} $$\end{document} The symbols (R) and (O) refer to the reduced and oxidized forms respectively. The overall quantum yield for the U(VI) to U(IV) reaction was found to be at least 0.72. Es wurde die photochemische Reduktion des Uranylions, UO 22+, durch Propionaldehyd in wäßrigem und nichtwäßrigem Medium untersucht. In Propionaldehyd als Medium gehen die Reaktionsprodukte nach einer Induktionsperiode eine Rückreaktion ein, in wäßrigem Medium dagegen nicht. Leitfähigkeitsmessungen zeigen, daß UO2(NO3)2 · 6 H2O in Propionaldehyd dissoziiert. Das Geschwindigkeitsgesetz der UIV‐Bildung bzw. ‐Wiederabnahme werden diskutiert und der wahrscheinliche Mechanismus der Vorwärts‐ und Rückreaktionen sind in „Summary”︁ formuliert. Die Gesamtquantenausbeute der UVI → UIV‐Reaktion liegt bei mindestens 0,72.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/zaac.19693670111</doi><tpages>11</tpages></addata></record>
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subjects ALDEHYDES
CATIONS
N20210 -Chemistry-Inorganic, Organic, & Physical Chemistry-Chemical Properties
PHOTOLYSIS
PROPIONALDEHYDE/photoinduced chemical reactions with uranyl ions, kinetics of uv
PROPIONIC ACID
RADIATION CHEMISTRY
REACTION KINETICS
REDUCTION
SOLUTIONS
ULTRAVIOLET RADIATION
ULTRAVIOLET RADIATION/ effects on reduction of uranyl ions by propionaldehyde in aqueous and nonaqueous solutions
URANYL COMPOUNDS
URANYL IONS/photoinduced reduction by propionaldehyde in aqueous and nonaqueous solutions, kinetics of uv
WATER
title The Reaction of Uranyl Ion with Propionaldehyde in the presence and absence of light
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