LrgpV1, Istex, Corpus, bibRecord, 000978

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 : 000979

A 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 Midoux

Source :

Chemical Engineering Science [ 0009-2509 ] ; 1995.

RBID : ISTEX:332B44C5475F3C9D67228DCAA34D8D0A2B6E832C

English descriptors

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:

https://api.istex.fr/document/332B44C5475F3C9D67228DCAA34D8D0A2B6E832C/fulltext/pdf

DOI: 10.1016/0009-2509(94)00285-1

Links to Exploration step

ISTEX:332B44C5475F3C9D67228DCAA34D8D0A2B6E832C

Le document en format XML

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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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</author>
<author xml:id="author-0004"><persName><forename type="first">Noe¨l</forename>
<surname>Midoux</surname>
</persName>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
</author>
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<monogr><title level="j">Chemical Engineering Science</title>
<title level="j" type="abbrev">CES</title>
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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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<ce:doi>10.1016/0009-2509(94)00285-1</ce:doi>
<ce:copyright type="unknown" year="1995">Elsevier Science</ce:copyright>
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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>
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<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>
<namePart type="family">Nguyen</namePart>
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<name type="personal"><namePart type="given">Souhila</namePart>
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</role>
</name>
<name type="personal"><namePart type="given">Gabriel</namePart>
<namePart type="family">Wild</namePart>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
<description>To whom correspondence should be addressed.</description>
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</role>
</name>
<name type="personal"><namePart type="given">Noe¨l</namePart>
<namePart type="family">Midoux</namePart>
<affiliation>Laboratoire des Sciences du Ge´nie Chimique, CNRS-ENSIC, BP 451, F54001 Nancy Cedex, France</affiliation>
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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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<detail type="volume"><number>49</number>
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<detail type="issue"><number>24</number>
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A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors

A novel hydrazine oxidation technique for the determination of k L a in gas—liquid and gas—liquid—solid reactors

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