Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80107-8
H. Lauron-Pernot *, F. Luck, J.M. Popa
{"title":"Methylbutynol: a new and simple diagnostic tool for acidic and basic sites of solids","authors":"H. Lauron-Pernot *, F. Luck, J.M. Popa","doi":"10.1016/0166-9834(91)80107-8","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80107-8","url":null,"abstract":"<div><p>In order to characterize acid-base properties of a material surface under gas-phase reaction conditions, a new test reaction has been investigated. We have shown that 2-methyl-3-butyn-2-oĺundergoes dehydration over solid acid materials and gives acetone and acetylene over solid basic materials. These reactions are very sensitive to the usual modifications that can occur during catalyst preparation. Production of 3-hydroxy-3-methyl-2-butanone seems to be characteristic of amphoteric catalysts possessing acid-base ion pairs.</p></div>","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"78 2","pages":"Pages 213-225"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0166-9834(91)80107-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90029994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Carbon monoxide hydrogenation over iron oxide, subjected to shear deformation under high pressure: role of vacancies","authors":"O.S. Morozova *, yu.v. Maksimov, D.P. Shashkin, P.A. Shirjaev, V.V. Matveyev, V.A. Zhorin, O.V. Krylov, G.N. Krjukova","doi":"10.1016/0166-9834(91)80108-9","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80108-9","url":null,"abstract":"<div><p>The formation of catalytically active structures m both “unloaded” polycrystalline α-Fe<sub>2</sub>O<sub>3</sub> and “loaded”, i.e. subjected to shear deformation under high pressure (SD+HP), was studied by “in situ” X-ray diffraction in an atmosphere of carbon monoxide and hydrogen, by transmission electron microscopy and by Mössbauer spectroscopy. Two main stages were observed in the activation process which correspond to different degrees of iron oxide reduction. The first stage (270–290°C ) was the reduction to nonstoichiometric magnetite, accompanied by carbon monoxide hydrogenation to saturated hydrocarbons. The second stage ( > 300 °C ) was the deep reduction to nonstoichiometric magnetite and clusters of iron carbide, accompanied by the appearance of unsaturated hydrocarbons. The overall catalytic activity was shown to be a function of both total length of spinel-carbide phase boundaries and the topology of the interface. In the case of the “unloaded” sample the formation of intercalated particles of carbide phase with alternating spinel-carbide layers led to a higher activity than that of the “loaded” one. Loose aggregates of carbide particles formed on the “loaded” sample block up active centres on the spinel surface and reduce the total activity. The nature of active centres on the surface of nonstoichiometric magnetite is discussed.</p></div>","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"78 2","pages":"Pages 227-239"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0166-9834(91)80108-9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91731130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80108-9
O. Morozova, Y. Maksimov, D. P. Shashkin, P. A. Shirjaev, V. Matveyev, V. Zhorin, O. Krylov, G. Krjukova
{"title":"Carbon monoxide hydrogenation over iron oxide, subjected to shear deformation under high pressure: role of vacancies","authors":"O. Morozova, Y. Maksimov, D. P. Shashkin, P. A. Shirjaev, V. Matveyev, V. Zhorin, O. Krylov, G. Krjukova","doi":"10.1016/0166-9834(91)80108-9","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80108-9","url":null,"abstract":"","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"13 1","pages":"227-239"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84391034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80102-3
A. Parmaliana, F. Frusteri, D. Miceli, A. Mezzapica, M. Scurrell, N. Giordano
{"title":"Factors controlling the reactivity of the silica surface in methane partial oxidation","authors":"A. Parmaliana, F. Frusteri, D. Miceli, A. Mezzapica, M. Scurrell, N. Giordano","doi":"10.1016/0166-9834(91)80102-3","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80102-3","url":null,"abstract":"","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"71 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89890364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80109-A
Yeping Cai, U. Ozkan
{"title":"Vanadia/titania catalysts in selective catalytic reduction of nitric oxide with ammonia","authors":"Yeping Cai, U. Ozkan","doi":"10.1016/0166-9834(91)80109-A","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80109-A","url":null,"abstract":"","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"15 1","pages":"241-255"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80210357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80102-3
A. Parmaliana *, F. Frusteri, D. Miceli, A. Mezzapica, M.S. Scurrell, N. Giordano
{"title":"Factors controlling the reactivity of the silica surface in methane partial oxidation","authors":"A. Parmaliana *, F. Frusteri, D. Miceli, A. Mezzapica, M.S. Scurrell, N. Giordano","doi":"10.1016/0166-9834(91)80102-3","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80102-3","url":null,"abstract":"<div><p>Catalytic partial oxidation of methane with oxygen on several oxide supports has been studied by using a batch reactor. The reactivity of various commercial SiO<sub>2</sub> samples at 520°C (“precipitated”, “extruded”, “gel” and “fumed”), expressed in terms of space time yield to HCHO, has been particularly ascertained with reference to their preparation method and sodium content. The “highest” activity of the “precipitated” SiO<sub>2</sub> sample is further enhanced by heat-treatment at 1000°C.</p></div>","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"78 2","pages":"Pages L7-L12"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0166-9834(91)80102-3","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91731065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Applied CatalysisPub Date : 1991-11-12DOI: 10.1016/0166-9834(91)80103-4
John N. Armor
{"title":"New catalytic technology commercialized in the USA during the 1980's","authors":"John N. Armor","doi":"10.1016/0166-9834(91)80103-4","DOIUrl":"https://doi.org/10.1016/0166-9834(91)80103-4","url":null,"abstract":"<div><p>This article reviews catalytic chemical, petroleum, and environmental technology which was successfully commercialized during the decade of the 80's within the USA. This survey is condensed into four major tables (Chemical Processes, Emission Control Catalysts, Polymers, and Petroleum Refining and Petrochemical Processes) providing over 90 specific examples of newly commercialized catalytic technology with extensive references. This review demonstrates that catalytic chemistry clearly continued to play a major role in enhancing a number of businesses on a worldwide basis. In addition some perspectives are provided for future developments in catalyst technology during the next decade.</p></div>","PeriodicalId":8091,"journal":{"name":"Applied Catalysis","volume":"78 2","pages":"Pages 141-173"},"PeriodicalIF":0.0,"publicationDate":"1991-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0166-9834(91)80103-4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91731128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}