Eintrag weiter verarbeiten
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT
Gespeichert in:
| Zeitschriftentitel: | Canadian Journal of Chemistry |
|---|---|
| Personen und Körperschaften: | |
| In: | Canadian Journal of Chemistry, 36, 1958, 10, S. 1416-1423 |
| Format: | E-Article |
| Sprache: | Französisch |
| veröffentlicht: |
Canadian Science Publishing
|
| Schlagwörter: |
| author_facet |
Becker, H. A. Becker, H. A. |
|---|---|
| author |
Becker, H. A. |
| spellingShingle |
Becker, H. A. Canadian Journal of Chemistry AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT Organic Chemistry General Chemistry Catalysis |
| author_sort |
becker, h. a. |
| spelling |
Becker, H. A. 0008-4042 1480-3291 Canadian Science Publishing Organic Chemistry General Chemistry Catalysis http://dx.doi.org/10.1139/v58-208 <jats:p> It is shown that the moisture desorption isotherm of wheat can be interpreted in harmony with Cassie's theoretical assumptions regarding adsorption on localized sites by the equation[Formula: see text]where N is the number of adsorbed molecules per gram of wheat and S is the number of localized sites. Kf/(1 + Kf) is a Langmuir-type factor for adsorption of the low energy fraction of molecules, and K′f<jats:sup>n</jats:sup> is a factor for adsorption of the normally condensed fraction of molecules. In agreement with theory K′,n,and S are independent of temperature. The dependence of K on temperature gives a value of −6.27 kcal/mole for the partial molal enthalpy of dilution of the low energy fraction of molecules, which is in the order of magnitude of a hydrogen bond. The analysis also illuminates the practice of the drying of wheat. An exact correspondence appears to exist between the calculated values of S and the apparent surface (or equilibrium) moistures observed in studying the diffusion of moisture out of wheat. The theoretical relation[Formula: see text]is therefore given for predicting apparent surface moisture contents in the vacuum drying of wheat, where[Formula: see text] </jats:p> AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT Canadian Journal of Chemistry |
| doi_str_mv |
10.1139/v58-208 |
| facet_avail |
Online Free |
| finc_class_facet |
Chemie und Pharmazie |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTEzOS92NTgtMjA4 |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTEzOS92NTgtMjA4 |
| institution |
DE-105 DE-14 DE-Ch1 DE-L229 DE-D275 DE-Bn3 DE-Brt1 DE-Zwi2 DE-D161 DE-Gla1 DE-Zi4 DE-15 DE-Pl11 DE-Rs1 |
| imprint |
Canadian Science Publishing, 1958 |
| imprint_str_mv |
Canadian Science Publishing, 1958 |
| issn |
0008-4042 1480-3291 |
| issn_str_mv |
0008-4042 1480-3291 |
| language |
French |
| mega_collection |
Canadian Science Publishing (CrossRef) |
| match_str |
becker1958aninterpretationofthemoisturedesorptionisothermofwheat |
| publishDateSort |
1958 |
| publisher |
Canadian Science Publishing |
| recordtype |
ai |
| record_format |
ai |
| series |
Canadian Journal of Chemistry |
| source_id |
49 |
| title |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_unstemmed |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_full |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_fullStr |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_full_unstemmed |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_short |
AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_sort |
an interpretation of the moisture desorption isotherm of wheat |
| topic |
Organic Chemistry General Chemistry Catalysis |
| url |
http://dx.doi.org/10.1139/v58-208 |
| publishDate |
1958 |
| physical |
1416-1423 |
| description |
<jats:p> It is shown that the moisture desorption isotherm of wheat can be interpreted in harmony with Cassie's theoretical assumptions regarding adsorption on localized sites by the equation[Formula: see text]where N is the number of adsorbed molecules per gram of wheat and S is the number of localized sites. Kf/(1 + Kf) is a Langmuir-type factor for adsorption of the low energy fraction of molecules, and K′f<jats:sup>n</jats:sup> is a factor for adsorption of the normally condensed fraction of molecules. In agreement with theory K′,n,and S are independent of temperature. The dependence of K on temperature gives a value of −6.27 kcal/mole for the partial molal enthalpy of dilution of the low energy fraction of molecules, which is in the order of magnitude of a hydrogen bond. The analysis also illuminates the practice of the drying of wheat. An exact correspondence appears to exist between the calculated values of S and the apparent surface (or equilibrium) moistures observed in studying the diffusion of moisture out of wheat. The theoretical relation[Formula: see text]is therefore given for predicting apparent surface moisture contents in the vacuum drying of wheat, where[Formula: see text] </jats:p> |
| container_issue |
10 |
| container_start_page |
1416 |
| container_title |
Canadian Journal of Chemistry |
| container_volume |
36 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792336697145425929 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T15:04:09.552Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=AN+INTERPRETATION+OF+THE+MOISTURE+DESORPTION+ISOTHERM+OF+WHEAT&rft.date=1958-10-01&genre=article&issn=1480-3291&volume=36&issue=10&spage=1416&epage=1423&pages=1416-1423&jtitle=Canadian+Journal+of+Chemistry&atitle=AN+INTERPRETATION+OF+THE+MOISTURE+DESORPTION+ISOTHERM+OF+WHEAT&aulast=Becker&aufirst=H.+A.&rft_id=info%3Adoi%2F10.1139%2Fv58-208&rft.language%5B0%5D=fra |
| SOLR | |
| _version_ | 1792336697145425929 |
| author | Becker, H. A. |
| author_facet | Becker, H. A., Becker, H. A. |
| author_sort | becker, h. a. |
| container_issue | 10 |
| container_start_page | 1416 |
| container_title | Canadian Journal of Chemistry |
| container_volume | 36 |
| description | <jats:p> It is shown that the moisture desorption isotherm of wheat can be interpreted in harmony with Cassie's theoretical assumptions regarding adsorption on localized sites by the equation[Formula: see text]where N is the number of adsorbed molecules per gram of wheat and S is the number of localized sites. Kf/(1 + Kf) is a Langmuir-type factor for adsorption of the low energy fraction of molecules, and K′f<jats:sup>n</jats:sup> is a factor for adsorption of the normally condensed fraction of molecules. In agreement with theory K′,n,and S are independent of temperature. The dependence of K on temperature gives a value of −6.27 kcal/mole for the partial molal enthalpy of dilution of the low energy fraction of molecules, which is in the order of magnitude of a hydrogen bond. The analysis also illuminates the practice of the drying of wheat. An exact correspondence appears to exist between the calculated values of S and the apparent surface (or equilibrium) moistures observed in studying the diffusion of moisture out of wheat. The theoretical relation[Formula: see text]is therefore given for predicting apparent surface moisture contents in the vacuum drying of wheat, where[Formula: see text] </jats:p> |
| doi_str_mv | 10.1139/v58-208 |
| facet_avail | Online, Free |
| finc_class_facet | Chemie und Pharmazie |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTEzOS92NTgtMjA4 |
| imprint | Canadian Science Publishing, 1958 |
| imprint_str_mv | Canadian Science Publishing, 1958 |
| institution | DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-Zwi2, DE-D161, DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1 |
| issn | 0008-4042, 1480-3291 |
| issn_str_mv | 0008-4042, 1480-3291 |
| language | French |
| last_indexed | 2024-03-01T15:04:09.552Z |
| match_str | becker1958aninterpretationofthemoisturedesorptionisothermofwheat |
| mega_collection | Canadian Science Publishing (CrossRef) |
| physical | 1416-1423 |
| publishDate | 1958 |
| publishDateSort | 1958 |
| publisher | Canadian Science Publishing |
| record_format | ai |
| recordtype | ai |
| series | Canadian Journal of Chemistry |
| source_id | 49 |
| spelling | Becker, H. A. 0008-4042 1480-3291 Canadian Science Publishing Organic Chemistry General Chemistry Catalysis http://dx.doi.org/10.1139/v58-208 <jats:p> It is shown that the moisture desorption isotherm of wheat can be interpreted in harmony with Cassie's theoretical assumptions regarding adsorption on localized sites by the equation[Formula: see text]where N is the number of adsorbed molecules per gram of wheat and S is the number of localized sites. Kf/(1 + Kf) is a Langmuir-type factor for adsorption of the low energy fraction of molecules, and K′f<jats:sup>n</jats:sup> is a factor for adsorption of the normally condensed fraction of molecules. In agreement with theory K′,n,and S are independent of temperature. The dependence of K on temperature gives a value of −6.27 kcal/mole for the partial molal enthalpy of dilution of the low energy fraction of molecules, which is in the order of magnitude of a hydrogen bond. The analysis also illuminates the practice of the drying of wheat. An exact correspondence appears to exist between the calculated values of S and the apparent surface (or equilibrium) moistures observed in studying the diffusion of moisture out of wheat. The theoretical relation[Formula: see text]is therefore given for predicting apparent surface moisture contents in the vacuum drying of wheat, where[Formula: see text] </jats:p> AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT Canadian Journal of Chemistry |
| spellingShingle | Becker, H. A., Canadian Journal of Chemistry, AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT, Organic Chemistry, General Chemistry, Catalysis |
| title | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_full | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_fullStr | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_full_unstemmed | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_short | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| title_sort | an interpretation of the moisture desorption isotherm of wheat |
| title_unstemmed | AN INTERPRETATION OF THE MOISTURE DESORPTION ISOTHERM OF WHEAT |
| topic | Organic Chemistry, General Chemistry, Catalysis |
| url | http://dx.doi.org/10.1139/v58-208 |