Hydrogen reduction of low-surface area uranium trioxide
The kinetics of the hydrogen reduction of uranium trioxide of surface area below 1.2m/sup 2//g were investigated. An increase in surface area and pore volume occurred during the reaction and an intermediate compound (composition, UO/ sub 2.6/ to UO/sub 2.7/) was formed. The initial rate of reductio...
Gespeichert in:
| Veröffentlicht in: | Transactions of the Faraday Society 1961, Vol.57, p.1400 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | |
|---|---|
| container_issue | |
| container_start_page | 1400 |
| container_title | Transactions of the Faraday Society |
| container_volume | 57 |
| creator | Morrow, Sheila A. Graves, S. Tomlinson, L. |
| description | The kinetics of the hydrogen reduction of uranium trioxide of surface area below 1.2m/sup 2//g were investigated. An increase in surface area and pore volume occurred during the reaction and an intermediate compound (composition, UO/ sub 2.6/ to UO/sub 2.7/) was formed. The initial rate of reductio n was found to be directly proportional to the surface area of the UO/sub 3/ and to (hydrogen partial pressure)/sup 0.7//sup 8/. The shape of the rate curve obtained was dependent on the nature of the UO/sub 3/ and the apparent activation energy for the reaction varied between 25 and 32 kcal/mole. The observed kinetics were best interpreted in terms of hydrogen chemisorption on the solid surface as the rate-controlling step. Hydration or the addition of sulfate ions to the trioxide greatly increased its surface area. (auth) |
| doi_str_mv | 10.1039/tf9615701400 |
| format | Article |
| fullrecord | <record><control><sourceid>crossref_osti_</sourceid><recordid>TN_cdi_crossref_primary_10_1039_tf9615701400</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1039_tf9615701400</sourcerecordid><originalsourceid>FETCH-LOGICAL-c199t-7cf73e5080e3b90e59511c8e5ff93e325582ede31024e51dd930f7c51802ca103</originalsourceid><addsrcrecordid>eNpNUM1OAyEY5KCJtfbmAxDPrn7AUuBoGrUmTbzYM0H4UEy7GGCjfXvX1IOnmcNk_gi5ZHDDQJjbFs2SSQWsBzghM5hIp5aKn5HzWj8AuJSgZ0StD6HkNxxowTD6lvJAc6S7_NXVsUTnkbqCjo7FDWnc01ZS_k4BL8hpdLuKiz-ck-3D_ctq3W2eH59Wd5vOM2Nap3xUAqckQPFqAKWRjHmNMkYjUEwlNMeAggHvUbIQjICovGQauHfTkDm5Ovrm2pKtPjX07z4PA_pme91z6PUkuj6KfMm1Foz2s6S9KwfLwP6-Yf-_IX4AV6RTJA</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>Hydrogen reduction of low-surface area uranium trioxide</title><source>Royal Society of Chemistry Journals Archive (1841-2007)</source><creator>Morrow, Sheila A. ; Graves, S. ; Tomlinson, L.</creator><creatorcontrib>Morrow, Sheila A. ; Graves, S. ; Tomlinson, L. ; United Kingdom Atomic Energy Authority, Springfields, Lancs, Eng</creatorcontrib><description>The kinetics of the hydrogen reduction of uranium trioxide of surface area below 1.2m/sup 2//g were investigated. An increase in surface area and pore volume occurred during the reaction and an intermediate compound (composition, UO/ sub 2.6/ to UO/sub 2.7/) was formed. The initial rate of reductio n was found to be directly proportional to the surface area of the UO/sub 3/ and to (hydrogen partial pressure)/sup 0.7//sup 8/. The shape of the rate curve obtained was dependent on the nature of the UO/sub 3/ and the apparent activation energy for the reaction varied between 25 and 32 kcal/mole. The observed kinetics were best interpreted in terms of hydrogen chemisorption on the solid surface as the rate-controlling step. Hydration or the addition of sulfate ions to the trioxide greatly increased its surface area. (auth)</description><identifier>ISSN: 0014-7672</identifier><identifier>DOI: 10.1039/tf9615701400</identifier><language>eng</language><subject>ADSORPTION ; CHEMISTRY ; HYDROGEN ; IONS ; POROSITY ; PRESSURE ; REACTION KINETICS ; REDUCTION ; SOLIDS ; SULFATES ; SURFACES ; URANIUM TRIOXIDE ; USES ; VOLUME</subject><ispartof>Transactions of the Faraday Society, 1961, Vol.57, p.1400</ispartof><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c199t-7cf73e5080e3b90e59511c8e5ff93e325582ede31024e51dd930f7c51802ca103</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,883,2820,4012,27906,27907,27908</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/4842048$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Morrow, Sheila A.</creatorcontrib><creatorcontrib>Graves, S.</creatorcontrib><creatorcontrib>Tomlinson, L.</creatorcontrib><creatorcontrib>United Kingdom Atomic Energy Authority, Springfields, Lancs, Eng</creatorcontrib><title>Hydrogen reduction of low-surface area uranium trioxide</title><title>Transactions of the Faraday Society</title><description>The kinetics of the hydrogen reduction of uranium trioxide of surface area below 1.2m/sup 2//g were investigated. An increase in surface area and pore volume occurred during the reaction and an intermediate compound (composition, UO/ sub 2.6/ to UO/sub 2.7/) was formed. The initial rate of reductio n was found to be directly proportional to the surface area of the UO/sub 3/ and to (hydrogen partial pressure)/sup 0.7//sup 8/. The shape of the rate curve obtained was dependent on the nature of the UO/sub 3/ and the apparent activation energy for the reaction varied between 25 and 32 kcal/mole. The observed kinetics were best interpreted in terms of hydrogen chemisorption on the solid surface as the rate-controlling step. Hydration or the addition of sulfate ions to the trioxide greatly increased its surface area. (auth)</description><subject>ADSORPTION</subject><subject>CHEMISTRY</subject><subject>HYDROGEN</subject><subject>IONS</subject><subject>POROSITY</subject><subject>PRESSURE</subject><subject>REACTION KINETICS</subject><subject>REDUCTION</subject><subject>SOLIDS</subject><subject>SULFATES</subject><subject>SURFACES</subject><subject>URANIUM TRIOXIDE</subject><subject>USES</subject><subject>VOLUME</subject><issn>0014-7672</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1961</creationdate><recordtype>article</recordtype><recordid>eNpNUM1OAyEY5KCJtfbmAxDPrn7AUuBoGrUmTbzYM0H4UEy7GGCjfXvX1IOnmcNk_gi5ZHDDQJjbFs2SSQWsBzghM5hIp5aKn5HzWj8AuJSgZ0StD6HkNxxowTD6lvJAc6S7_NXVsUTnkbqCjo7FDWnc01ZS_k4BL8hpdLuKiz-ck-3D_ctq3W2eH59Wd5vOM2Nap3xUAqckQPFqAKWRjHmNMkYjUEwlNMeAggHvUbIQjICovGQauHfTkDm5Ovrm2pKtPjX07z4PA_pme91z6PUkuj6KfMm1Foz2s6S9KwfLwP6-Yf-_IX4AV6RTJA</recordid><startdate>1961</startdate><enddate>1961</enddate><creator>Morrow, Sheila A.</creator><creator>Graves, S.</creator><creator>Tomlinson, L.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>1961</creationdate><title>Hydrogen reduction of low-surface area uranium trioxide</title><author>Morrow, Sheila A. ; Graves, S. ; Tomlinson, L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c199t-7cf73e5080e3b90e59511c8e5ff93e325582ede31024e51dd930f7c51802ca103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1961</creationdate><topic>ADSORPTION</topic><topic>CHEMISTRY</topic><topic>HYDROGEN</topic><topic>IONS</topic><topic>POROSITY</topic><topic>PRESSURE</topic><topic>REACTION KINETICS</topic><topic>REDUCTION</topic><topic>SOLIDS</topic><topic>SULFATES</topic><topic>SURFACES</topic><topic>URANIUM TRIOXIDE</topic><topic>USES</topic><topic>VOLUME</topic><toplevel>online_resources</toplevel><creatorcontrib>Morrow, Sheila A.</creatorcontrib><creatorcontrib>Graves, S.</creatorcontrib><creatorcontrib>Tomlinson, L.</creatorcontrib><creatorcontrib>United Kingdom Atomic Energy Authority, Springfields, Lancs, Eng</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Transactions of the Faraday Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morrow, Sheila A.</au><au>Graves, S.</au><au>Tomlinson, L.</au><aucorp>United Kingdom Atomic Energy Authority, Springfields, Lancs, Eng</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Hydrogen reduction of low-surface area uranium trioxide</atitle><jtitle>Transactions of the Faraday Society</jtitle><date>1961</date><risdate>1961</risdate><volume>57</volume><spage>1400</spage><pages>1400-</pages><issn>0014-7672</issn><abstract>The kinetics of the hydrogen reduction of uranium trioxide of surface area below 1.2m/sup 2//g were investigated. An increase in surface area and pore volume occurred during the reaction and an intermediate compound (composition, UO/ sub 2.6/ to UO/sub 2.7/) was formed. The initial rate of reductio n was found to be directly proportional to the surface area of the UO/sub 3/ and to (hydrogen partial pressure)/sup 0.7//sup 8/. The shape of the rate curve obtained was dependent on the nature of the UO/sub 3/ and the apparent activation energy for the reaction varied between 25 and 32 kcal/mole. The observed kinetics were best interpreted in terms of hydrogen chemisorption on the solid surface as the rate-controlling step. Hydration or the addition of sulfate ions to the trioxide greatly increased its surface area. (auth)</abstract><doi>10.1039/tf9615701400</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0014-7672 |
| ispartof | Transactions of the Faraday Society, 1961, Vol.57, p.1400 |
| issn | 0014-7672 |
| language | eng |
| recordid | cdi_crossref_primary_10_1039_tf9615701400 |
| source | Royal Society of Chemistry Journals Archive (1841-2007) |
| subjects | ADSORPTION CHEMISTRY HYDROGEN IONS POROSITY PRESSURE REACTION KINETICS REDUCTION SOLIDS SULFATES SURFACES URANIUM TRIOXIDE USES VOLUME |
| title | Hydrogen reduction of low-surface area uranium trioxide |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-16T07%3A08%3A28IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-crossref_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Hydrogen%20reduction%20of%20low-surface%20area%20uranium%20trioxide&rft.jtitle=Transactions%20of%20the%20Faraday%20Society&rft.au=Morrow,%20Sheila%20A.&rft.aucorp=United%20Kingdom%20Atomic%20Energy%20Authority,%20Springfields,%20Lancs,%20Eng&rft.date=1961&rft.volume=57&rft.spage=1400&rft.pages=1400-&rft.issn=0014-7672&rft_id=info:doi/10.1039/tf9615701400&rft_dat=%3Ccrossref_osti_%3E10_1039_tf9615701400%3C/crossref_osti_%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |