A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors
Identifieur interne : 000978 ( Istex/Corpus ); précédent : 000977; suivant : 000979A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors
Auteurs : Alejandro Lara Ma Rquez ; Cha U Nguyen ; Souhila Poncin ; Gabriel Wild ; Noe L MidouxSource :
- Chemical Engineering Science [ 0009-2509 ] ; 1995.
English descriptors
- KwdEn :
- Absorption rate, Ammonia buffer, Black symbols, Catalyst, Catalyst concentration, Catalyst concentrations, Centrifugal, Centrifugal film absorber, Centrifugal reactor, Chem, Chemical absorption technique, Chemical reaction, Chemical technique, Classical sulphite oxidation technique, Coalescence behaviour, Coefficient, Concentration difference, Copper chloride cucl, Copper ions, Copper tetraphthalocyanine, Desorption, Desorption techniques, Different parts, Dynamic technique, Ejector, Engng, Experimental plant, Film absorber, Film reactor, Flow rate, Hatta number, Hydrazine, Hydrazine concentration, Hydrazine concentrations, Hydrazine oxidation, Hydrazine oxidation technique, Hydrazine solution, Hydrazine technique, Hydrogen chloride, Interfacial area, Kmol, Kmol rnm3, Kmol rnp3, Lara, Lara marquez, Lara mbrquez, Lara mdrquez, Lara mgrquez, Linear function, Liquid batch, Liquid film, Liquid height, Liquid phase, Liquid volume, Mass transfer, Mass transfer coefficient, Mass transfer film, Molar hydrogen chloride, Nguyen, Oxygen absorption, Oxygen concentration, Oxygen concentrations, Oxygen electrode, Oxygen probe, Physical absorption, Physical absorption techniques, Reaction regime, Reactive solution, Reactive species, Reactor, Response time, Rotor speed, Same order, Severe drawbacks, Small concentrations, Small flow rate, Sodium sulphite, Spectrophotometric method, Steady state, Sulphite, Sulphite oxidation technique, Sulphite solution, Vertical groove, Volumetric, Volumetric mass transfer coefficient, Volumetric mass transfer coefficients, White symbols, Zeroth order.
- Teeft :
- Absorption rate, Ammonia buffer, Black symbols, Catalyst, Catalyst concentration, Catalyst concentrations, Centrifugal, Centrifugal film absorber, Centrifugal reactor, Chem, Chemical absorption technique, Chemical reaction, Chemical technique, Classical sulphite oxidation technique, Coalescence behaviour, Coefficient, Concentration difference, Copper chloride cucl, Copper ions, Copper tetraphthalocyanine, Desorption, Desorption techniques, Different parts, Dynamic technique, Ejector, Engng, Experimental plant, Film absorber, Film reactor, Flow rate, Hatta number, Hydrazine, Hydrazine concentration, Hydrazine concentrations, Hydrazine oxidation, Hydrazine oxidation technique, Hydrazine solution, Hydrazine technique, Hydrogen chloride, Interfacial area, Kmol, Kmol rnm3, Kmol rnp3, Lara, Lara marquez, Lara mbrquez, Lara mdrquez, Lara mgrquez, Linear function, Liquid batch, Liquid film, Liquid height, Liquid phase, Liquid volume, Mass transfer, Mass transfer coefficient, Mass transfer film, Molar hydrogen chloride, Nguyen, Oxygen absorption, Oxygen concentration, Oxygen concentrations, Oxygen electrode, Oxygen probe, Physical absorption, Physical absorption techniques, Reaction regime, Reactive solution, Reactive species, Reactor, Response time, Rotor speed, Same order, Severe drawbacks, Small concentrations, Small flow rate, Sodium sulphite, Spectrophotometric method, Steady state, Sulphite, Sulphite oxidation technique, Sulphite solution, Vertical groove, Volumetric, Volumetric mass transfer coefficient, Volumetric mass transfer coefficients, White symbols, Zeroth order.
Abstract
Abstract: The volumetric mass transfer coefficientkLa in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination ofkLa with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations ofkLa in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).
Url:
DOI: 10.1016/0009-2509(94)00285-1
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Abstract: The volumetric mass transfer coefficientkLa in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination ofkLa with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations ofkLa in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).</div>
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<abstract>Abstract: The volumetric mass transfer coefficientkLa in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination ofkLa with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations ofkLa in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).</abstract>
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<sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors</title>
<author xml:id="author-0000"><persName><forename type="first">Alejandro</forename>
<surname>Lara Ma´rquez</surname>
</persName>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
</author>
<author xml:id="author-0001"><persName><forename type="first">Chaˆu</forename>
<surname>Nguyen</surname>
</persName>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
</author>
<author xml:id="author-0002"><persName><forename type="first">Souhila</forename>
<surname>Poncin</surname>
</persName>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
</author>
<author xml:id="author-0003"><persName><forename type="first">Gabriel</forename>
<surname>Wild</surname>
</persName>
<affiliation>To whom correspondence should be addressed.</affiliation>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
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<author xml:id="author-0004"><persName><forename type="first">Noe¨l</forename>
<surname>Midoux</surname>
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<abstract xml:lang="en"><p>Abstract: The volumetric mass transfer coefficientkLa in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination ofkLa with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations ofkLa in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).</p>
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<head><ce:title>A novel hydrazine oxidation technique for the determination of<ce:italic>k</ce:italic>
<ce:inf loc="post"><ce:italic>L</ce:italic>
</ce:inf>
<ce:italic>a</ce:italic>
in gas—liquid and gas—liquid—solid reactors</ce:title>
<ce:author-group><ce:author><ce:given-name>Alejandro</ce:given-name>
<ce:surname>Lara Ma´rquez</ce:surname>
</ce:author>
<ce:author><ce:given-name>Chaˆu</ce:given-name>
<ce:surname>Nguyen</ce:surname>
</ce:author>
<ce:author><ce:given-name>Souhila</ce:given-name>
<ce:surname>Poncin</ce:surname>
</ce:author>
<ce:author><ce:given-name>Gabriel</ce:given-name>
<ce:surname>Wild</ce:surname>
<ce:cross-ref refid="cor1"><ce:sup loc="post">1</ce:sup>
</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>Noe¨l</ce:given-name>
<ce:surname>Midoux</ce:surname>
</ce:author>
<ce:affiliation><ce:textfn>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</ce:textfn>
</ce:affiliation>
<ce:correspondence id="cor1"><ce:label>1</ce:label>
<ce:text>To whom correspondence should be addressed.</ce:text>
</ce:correspondence>
</ce:author-group>
<ce:date-received day="25" month="5" year="1994"></ce:date-received>
<ce:date-revised day="10" month="8" year="1994"></ce:date-revised>
<ce:abstract id="ab1" class="author" xml:lang="en"><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para view="all" id="simple-para.0010">The volumetric mass transfer coefficient<ce:italic>k</ce:italic>
<ce:inf loc="post"><ce:italic>L</ce:italic>
</ce:inf>
<ce:italic>a</ce:italic>
in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination of<ce:italic>k</ce:italic>
<ce:inf loc="post"><ce:italic>L</ce:italic>
</ce:inf>
<ce:italic>a</ce:italic>
with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations of<ce:italic>k</ce:italic>
<ce:inf loc="post"><ce:italic>L</ce:italic>
</ce:inf>
<ce:italic>a</ce:italic>
in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
</head>
<tail view="all"><ce:bibliography view="all" id="bibliography.0010"><ce:section-title>Reference</ce:section-title>
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<mods version="3.6"><titleInfo lang="en"><title>A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors</title>
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<titleInfo type="alternative" lang="en" contentType="CDATA"><title>A novel hydrazine oxidation technique for the determination of</title>
</titleInfo>
<name type="personal"><namePart type="given">Alejandro</namePart>
<namePart type="family">Lara Ma´rquez</namePart>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
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<name type="personal"><namePart type="given">Chaˆu</namePart>
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<name type="personal"><namePart type="given">Gabriel</namePart>
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<description>To whom correspondence should be addressed.</description>
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<name type="personal"><namePart type="given">Noe¨l</namePart>
<namePart type="family">Midoux</namePart>
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<abstract lang="en">Abstract: The volumetric mass transfer coefficientkLa in gas—liquid contacting equipment is in most cases determined by the oxygen absorption or desorption technique; the hydrazine oxidation technique is an interesting alternative to these physical techniques; it has not been widely used, mainly because the available catalysts presented severe drawbacks. An original catalyst is proposed which allows the determination ofkLa with more or less coalescing liquids. The order of magnitude of the rate constant is determined at different catalyst concentrations, allowing the use of hydrazine oxidation by air as a chemical reaction which is slow in the mass transfer film but fast in the bulk of the liquid. Examples of determinations ofkLa in very different contactors are presented (liquid motivated ejector, centrifugal film absorber, cocurrent upflow packed-bed column).</abstract>
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