{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390001204390415744.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1246/nikkashi.1982.10"}},{"identifier":{"@type":"URI","@value":"https://www.jstage.jst.go.jp/article/nikkashi1972/1982/1/1982_1_10/_pdf"}},{"identifier":{"@type":"NAID","@value":"130004157096"}}],"dc:title":[{"@language":"en","@value":"Kinetic Studies on Hydrolysis of Iron(II) Bromide and Bromination of Iron(II) Diiron(III)Oxide†"},{"@language":"ja","@value":"臭化鉄(II)の加水分解反応および酸化二鉄(III)鉄(II)の臭素化反応の速度論的検討"}],"description":[{"type":"abstract","notation":[{"@language":"en","@value":"As a part of research and development of the iron-brom ine based thermochemical watersplitting cycle, both hydrolysis and reproduction steps of FeBr2 have been investigated. Kinetic measurements were carried out with powder samples by means of a thermobalance. FeBr2 was hydrolyzed smoothly irrespective of its preparative me thods up to a conversion yield of 1.0 at temperatures of 500-600°C. The hydrolysis proceeded following one empirically obtained kinetic equation. The main rate determining step appeared to be the diffusion of the reactants in the product layer. The specific surface area of the Fe<SUB>8</SUB>0<SUB>4 </SUB>powder obtained largely depended upon the conditions of the hydrolysis. Bromination of the Fe<SUB>8</SUB>0<SUB>4</SUB> powder w ith a relatively large surface area of 5.5 r n2fg was carried out even with azeotropic HBr up to a conversion of ca.0.8 at temperatures of 200-250°C, where the chemical reactions at the interface were found to be the rate determining. On the other hand, higher temperatures of 450--, 500°C and dry HBr were required for the bromination of the Fe<SUB>8</SUB>0<SUB>4</SUB> powder with a small surface area of 0.2 m2/g. The reaction proceeded up to a conversion of ca.0.5 being controlled by the diffusion of the reactants in the product layer. Since both the hydrolysis and the bromination proceeded at nearly the same reactio n rate, it is expected feasible to recycle effectively more than 50% of the charged Fe<SUB>3</SUB>0<SUB>4</SUB> in the process."},{"@language":"ja","@value":"鉄一臭素系熱化学サイクルに関する研究の一環として,FeBr<SUB>2</SUB>の加水分解反応とその再生反応であるFe<SUB>3</SUB>0<SUB>4</SUB>の臭素化反応について速度論的な検討を行なった。実験は固体反応物の粉末試料について熱テンビンを用い気一固反応で行なった。,詰反応温度500-600℃ におけるFeBr<SUB>2</SUB>の加水分解は反応の進行にともない化学反応律速から生成物層内拡散律速に移行することが見いだされたが,変化率0-1.0の全範囲にわたって一つの実験速度式が適用できた。FeBr<SUB>2</SUB>の再生反応については,前段の加水分解工程でどの程度の比表面積を有するFe<SUB>3</SUB>0<SUB>4</SUB>粉末が生成するかによってその反応条件が大きく変化した。比表面積が5m2/9と比較的大きなFe<SUB>3</SUB>0<SUB>4</SUB>粉末では反応温度200-250℃で共沸組成臭化水素酸を用いても十分その臭素化を行なうことができた。この場合,反応は内部界面での化学反応律速の速度式に適合して進行し,Fe80`変化率は約0・8に達した。一一方,比表面積が0.2m2/9のFe<SUB>3</SUB>0<SUB>4</SUB>粉末の臭素化には450-500℃ の反応温度と水を分離した臭化水素ガスが必要とされた。この場合,生成物層内拡散律速の速度式が適用できたが,Fe<SUB>3</SUB>0<SUB>4</SUB>`変化率は0.5程度であった。"}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410006850498317696","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000255708073"}],"foaf:name":[{"@language":"en","@value":"ISHIKAWAE Hiroshi"},{"@language":"ja","@value":"石川 博"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"大阪工業技術試験場"},{"@language":"en","@value":"GovernmentI ndustrial Research Institute, Osaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1410851320454387585","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000256041326"}],"foaf:name":[{"@language":"en","@value":"ISHII Eiichi"},{"@language":"ja","@value":"石井 英一"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"大阪工業技術試験場"},{"@language":"en","@value":"GovernmentI ndustrial Research Institute, Osaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1410851320454387587","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000256041327"}],"foaf:name":[{"@language":"en","@value":"UEHARA Itsuki"},{"@language":"ja","@value":"上原 斎"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"大阪工業技術試験場"},{"@language":"en","@value":"GovernmentI ndustrial Research Institute, Osaka"}]},{"@id":"https://cir.nii.ac.jp/crid/1410851320454387584","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000256041328"}],"foaf:name":[{"@language":"en","@value":"NAKANE Masanori"},{"@language":"ja","@value":"中根 正典"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"大阪工業技術試験場"},{"@language":"en","@value":"GovernmentI ndustrial Research Institute, Osaka"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"03694577"},{"@type":"EISSN","@value":"21850925"}],"prism:publicationName":[{"@language":"en","@value":"NIPPON KAGAKU KAISHI"},{"@language":"ja","@value":"日本化学会誌（化学と工業化学）"},{"@language":"en","@value":"Nippon Kagaku Kaishi"},{"@language":"ja","@value":"日化"},{"@language":"en","@value":"NIPPON KAGAKU KAISHI"},{"@language":"ja","@value":"日本化学会誌"}],"dc:publisher":[{"@language":"en","@value":"The Chemical Society of Japan"},{"@language":"ja","@value":"公益社団法人 日本化学会"}],"prism:publicationDate":"1982-01-10","prism:volume":"1982","prism:number":"1","prism:startingPage":"10","prism:endingPage":"15"},"reviewed":"false","url":[{"@id":"https://www.jstage.jst.go.jp/article/nikkashi1972/1982/1/1982_1_10/_pdf"}],"availableAt":"1982-01-10","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=General%20Chemistry","dc:title":"General Chemistry"}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0019073358"},{"@type":"CROSSREF","@value":"10.1246/nikkashi.1982.10"},{"@type":"CIA","@value":"130004157096"}]}