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The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood
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| Zeitschriftentitel: | Journal of Polymer Science: Polymer Chemistry Edition |
|---|---|
| Personen und Körperschaften: | |
| In: | Journal of Polymer Science: Polymer Chemistry Edition, 20, 1982, 3, S. 707-724 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
|
| Schlagwörter: |
| author_facet |
Pizzi, A. Pizzi, A. |
|---|---|
| author |
Pizzi, A. |
| spellingShingle |
Pizzi, A. Journal of Polymer Science: Polymer Chemistry Edition The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood General Medicine |
| author_sort |
pizzi, a. |
| spelling |
Pizzi, A. 0360-6376 1542-9369 Wiley General Medicine http://dx.doi.org/10.1002/pol.1982.170200311 <jats:title>Abstract</jats:title><jats:p>The kinetic behavior of a Cr<jats:sup>6+</jats:sup>/Cu<jats:sup>2+</jats:sup> system in its reaction with wood has been elucidated. The same reactions with carbohydrates and lignin of wood for Cr<jats:sup>VI</jats:sup> alone are still present. Approximately 20% of the copper is fixed to the guaiacyl units of lignin in the form of copper chromate; the remaining copper forms complexes with cellulose and mainly with the guaiacyl units of lignin. The Cr<jats:sup>VI</jats:sup>/lignin guaiacyl unit complexes already found for the treatment of wood with CrO<jats:sub>3</jats:sub> are still the main Cr<jats:sup>VI</jats:sup> complexes formed. Copper chromate is present as [Cu(H<jats:sub>2</jats:sub>O)<jats:sub>2</jats:sub>(guaiacol)]CrO<jats:sub>4</jats:sub>(guaiacol) complexes, and CuCrO<jats:sub>4</jats:sub> bridges between different guaiacyl units of the lignin network appear to be likely. Substantial interference of the Cu<jats:sup>2+</jats:sup> ions in the second‐zone reactions of Cr<jats:sup>VI</jats:sup> with wood occurs. The amount of Cr<jats:sup>VI</jats:sup> and Cr<jats:sup>III</jats:sup> fixed onto lignin and cellulose compares well with experimental values. Rate constants, energies of activation, and Arrhenius equations of the various reactions have been obtained. The amount of Cu<jats:sup>2+</jats:sup> interference in the reaction has also been calculated.</jats:p> The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood Journal of Polymer Science: Polymer Chemistry Edition |
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Journal of Polymer Science: Polymer Chemistry Edition |
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| title |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_unstemmed |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_full |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_fullStr |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_full_unstemmed |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_short |
The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_sort |
the chemistry and kinetic behavior of cu‐cr‐as/b wood preservatives. ii. fixation of the cu/cr system on wood |
| topic |
General Medicine |
| url |
http://dx.doi.org/10.1002/pol.1982.170200311 |
| publishDate |
1982 |
| physical |
707-724 |
| description |
<jats:title>Abstract</jats:title><jats:p>The kinetic behavior of a Cr<jats:sup>6+</jats:sup>/Cu<jats:sup>2+</jats:sup> system in its reaction with wood has been elucidated. The same reactions with carbohydrates and lignin of wood for Cr<jats:sup>VI</jats:sup> alone are still present. Approximately 20% of the copper is fixed to the guaiacyl units of lignin in the form of copper chromate; the remaining copper forms complexes with cellulose and mainly with the guaiacyl units of lignin. The Cr<jats:sup>VI</jats:sup>/lignin guaiacyl unit complexes already found for the treatment of wood with CrO<jats:sub>3</jats:sub> are still the main Cr<jats:sup>VI</jats:sup> complexes formed. Copper chromate is present as [Cu(H<jats:sub>2</jats:sub>O)<jats:sub>2</jats:sub>(guaiacol)]CrO<jats:sub>4</jats:sub>(guaiacol) complexes, and CuCrO<jats:sub>4</jats:sub> bridges between different guaiacyl units of the lignin network appear to be likely. Substantial interference of the Cu<jats:sup>2+</jats:sup> ions in the second‐zone reactions of Cr<jats:sup>VI</jats:sup> with wood occurs. The amount of Cr<jats:sup>VI</jats:sup> and Cr<jats:sup>III</jats:sup> fixed onto lignin and cellulose compares well with experimental values. Rate constants, energies of activation, and Arrhenius equations of the various reactions have been obtained. The amount of Cu<jats:sup>2+</jats:sup> interference in the reaction has also been calculated.</jats:p> |
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| description | <jats:title>Abstract</jats:title><jats:p>The kinetic behavior of a Cr<jats:sup>6+</jats:sup>/Cu<jats:sup>2+</jats:sup> system in its reaction with wood has been elucidated. The same reactions with carbohydrates and lignin of wood for Cr<jats:sup>VI</jats:sup> alone are still present. Approximately 20% of the copper is fixed to the guaiacyl units of lignin in the form of copper chromate; the remaining copper forms complexes with cellulose and mainly with the guaiacyl units of lignin. The Cr<jats:sup>VI</jats:sup>/lignin guaiacyl unit complexes already found for the treatment of wood with CrO<jats:sub>3</jats:sub> are still the main Cr<jats:sup>VI</jats:sup> complexes formed. Copper chromate is present as [Cu(H<jats:sub>2</jats:sub>O)<jats:sub>2</jats:sub>(guaiacol)]CrO<jats:sub>4</jats:sub>(guaiacol) complexes, and CuCrO<jats:sub>4</jats:sub> bridges between different guaiacyl units of the lignin network appear to be likely. Substantial interference of the Cu<jats:sup>2+</jats:sup> ions in the second‐zone reactions of Cr<jats:sup>VI</jats:sup> with wood occurs. The amount of Cr<jats:sup>VI</jats:sup> and Cr<jats:sup>III</jats:sup> fixed onto lignin and cellulose compares well with experimental values. Rate constants, energies of activation, and Arrhenius equations of the various reactions have been obtained. The amount of Cu<jats:sup>2+</jats:sup> interference in the reaction has also been calculated.</jats:p> |
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| imprint | Wiley, 1982 |
| imprint_str_mv | Wiley, 1982 |
| institution | DE-D275, DE-Bn3, DE-Brt1, DE-D161, DE-Zi4, DE-Gla1, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-105, DE-Ch1, DE-L229 |
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| spelling | Pizzi, A. 0360-6376 1542-9369 Wiley General Medicine http://dx.doi.org/10.1002/pol.1982.170200311 <jats:title>Abstract</jats:title><jats:p>The kinetic behavior of a Cr<jats:sup>6+</jats:sup>/Cu<jats:sup>2+</jats:sup> system in its reaction with wood has been elucidated. The same reactions with carbohydrates and lignin of wood for Cr<jats:sup>VI</jats:sup> alone are still present. Approximately 20% of the copper is fixed to the guaiacyl units of lignin in the form of copper chromate; the remaining copper forms complexes with cellulose and mainly with the guaiacyl units of lignin. The Cr<jats:sup>VI</jats:sup>/lignin guaiacyl unit complexes already found for the treatment of wood with CrO<jats:sub>3</jats:sub> are still the main Cr<jats:sup>VI</jats:sup> complexes formed. Copper chromate is present as [Cu(H<jats:sub>2</jats:sub>O)<jats:sub>2</jats:sub>(guaiacol)]CrO<jats:sub>4</jats:sub>(guaiacol) complexes, and CuCrO<jats:sub>4</jats:sub> bridges between different guaiacyl units of the lignin network appear to be likely. Substantial interference of the Cu<jats:sup>2+</jats:sup> ions in the second‐zone reactions of Cr<jats:sup>VI</jats:sup> with wood occurs. The amount of Cr<jats:sup>VI</jats:sup> and Cr<jats:sup>III</jats:sup> fixed onto lignin and cellulose compares well with experimental values. Rate constants, energies of activation, and Arrhenius equations of the various reactions have been obtained. The amount of Cu<jats:sup>2+</jats:sup> interference in the reaction has also been calculated.</jats:p> The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood Journal of Polymer Science: Polymer Chemistry Edition |
| spellingShingle | Pizzi, A., Journal of Polymer Science: Polymer Chemistry Edition, The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood, General Medicine |
| title | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_full | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_fullStr | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_full_unstemmed | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_short | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| title_sort | the chemistry and kinetic behavior of cu‐cr‐as/b wood preservatives. ii. fixation of the cu/cr system on wood |
| title_unstemmed | The chemistry and kinetic behavior of Cu‐Cr‐As/B wood preservatives. II. Fixation of the Cu/Cr system on wood |
| topic | General Medicine |
| url | http://dx.doi.org/10.1002/pol.1982.170200311 |