{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,12,10]],"date-time":"2023-12-10T17:10:28Z","timestamp":1702228228460},"reference-count":29,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,4,12]],"date-time":"2023-04-12T00:00:00Z","timestamp":1681257600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Leipzig University"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>When impregnated with manganiferous precursors, \u03b3-Al2O3 may be converted into \u03b1-Al2O3 under relatively mild and energy-saving conditions. In this work, a manganese assisted conversion to corundum at temperatures as low as 800 \u00b0C is investigated. To observe the alumina phase transition, XRD and solid-state 27Al-MAS-NMR are applied. By post-synthetical treatment in concentrated HCl, residual manganese is removed up to 3 wt.-%. Thereby, \u03b1-Al2O3 with a high specific surface area of 56 m2 g\u22121 is obtained after complete conversion. Just as for transition alumina, thermal stability is an important issue for corundum. Long-term stability tests were performed at 750 \u00b0C for 7 days. Although highly porous corundum was synthesized, the porosity decreased with time at common process temperatures.<\/jats:p>","DOI":"10.3390\/ma16083047","type":"journal-article","created":{"date-parts":[[2023,4,13]],"date-time":"2023-04-13T06:09:21Z","timestamp":1681366161000},"page":"3047","source":"Crossref","is-referenced-by-count":0,"title":["Towards High Surface Area \u03b1-Al2O3\u2013Mn-Assisted Low Temperature Transformation"],"prefix":"10.3390","volume":"16","author":[{"given":"Tim","family":"J\u00e4hnichen","sequence":"first","affiliation":[{"name":"Institute of Chemical Technology, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-8322-5568","authenticated-orcid":false,"given":"Simon","family":"Carstens","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technology, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"given":"Maximilian","family":"Franz","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technology, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"given":"Otto","family":"Laufer","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technology, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0001-9092-0879","authenticated-orcid":false,"given":"Marianne","family":"Wenzel","sequence":"additional","affiliation":[{"name":"Institute of Analytical Chemistry, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"ORCID":"http:\/\/orcid.org\/0000-0002-7800-7443","authenticated-orcid":false,"given":"J\u00f6rg","family":"Matysik","sequence":"additional","affiliation":[{"name":"Institute of Analytical Chemistry, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]},{"given":"Dirk","family":"Enke","sequence":"additional","affiliation":[{"name":"Institute of Chemical Technology, Leipzig University, Linn\u00e9str. 3, D-04103 Leipzig, Germany"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Bartholomew, C.H., and Farrauto, R.J. (2006). Fundamentals of Industrial Catalytic Processes, Wiley & Sons. [2nd ed.].","DOI":"10.1002\/9780471730071"},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Heck, R.M., Farrauto, R.J., and Gulati, S.T. (2009). Catalytic Air Pollution Control: Commercial Technology, Wiley. [3rd ed.].","DOI":"10.1002\/9781118397749"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"303","DOI":"10.1016\/j.jeurceramsoc.2010.10.009","article-title":"Alumina foam catalyst supports for industrial steam reforming processes","volume":"31","author":"Faure","year":"2011","journal-title":"J. Eur. Ceram. Soc."},{"key":"ref_4","unstructured":"Murrell, L.L., Grenoble, D.C., and DeLuca, J.P. (1979). Process for Preparing Ultra-Stable, High Surface Area Alpha-Alumina. (4,169,883), U.S. Patent."},{"key":"ref_5","unstructured":"Hartmann, I., Billig, E., Bindig, R., Carstens, S., and Liebetrau, J. (2014). M\u00f6glichkeiten, Limitierungen und Entwicklungsbedarf zur katalytischen Emissionsminderung, DBFZ."},{"key":"ref_6","unstructured":"Dvoracek, D. (2015). Festk\u00f6rper-, Metathese- und Thermit-Reaktion. Neue Wege zu por\u00f6sen Metall-bzw. Mischmetalloxid Monolithen. [Ph.D. Dissertation, Universit\u00e4t Leipzig]."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"41","DOI":"10.1016\/j.micromeso.2011.12.014","article-title":"Structural evolution of hierarchically macro\/mesoporous Al2O3 monoliths under heat-treatment","volume":"153","author":"Zhang","year":"2012","journal-title":"Microporous Mesoporous Mater."},{"key":"ref_8","unstructured":"Wefers, K., and Misra, C. (1987). Oxides and Hydroxides of Aluminum: Alcoa Technical Paper No. 19, Revised, Aluminum Company of America."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1016\/0167-2738(85)90050-5","article-title":"Thermal stabilization of high surface area alumina","volume":"16","author":"Schaper","year":"1985","journal-title":"Solid State Ion."},{"key":"ref_10","doi-asserted-by":"crossref","unstructured":"Carstens, S., Meyer, R., and Enke, D. (2020). Towards Macroporous \u03b1-Al2O3-Routes, Possibilities and Limitations. Materials, 13.","DOI":"10.3390\/ma13071787"},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/S1381-1169(01)00327-2","article-title":"Phase transformations in the thermoactivated MnOx\u2013Al2O3 catalytic system","volume":"179","author":"Tsyrulnikov","year":"2002","journal-title":"J. Mol. Catal. A Chem."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2493","DOI":"10.1016\/j.jeurceramsoc.2019.01.043","article-title":"Investigation of the formation process of highly porous \u03b1-Al2O3 via citric acid-assisted sol-gel synthesis","volume":"39","author":"Carstens","year":"2019","journal-title":"J. Eur. Ceram. Soc."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"19982","DOI":"10.1038\/s41598-019-56294-1","article-title":"Sol-gel synthesis of \u03b1-Al2O3 with enhanced porosity via dicarboxylic acid templating","volume":"9","author":"Carstens","year":"2019","journal-title":"Sci. Rep."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1515\/pac-2015-0503","article-title":"Isotopic compositions of the elements 2013 (IUPAC Technical Report)","volume":"88","author":"Meija","year":"2016","journal-title":"Pure Appl. Chem."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"7832","DOI":"10.1021\/ja970788u","article-title":"Dehydration Studies of a High-Surface-Area Alumina (Pseudo-boehmite) Using Solid-State 1 H and 27 Al NMR","volume":"119","author":"Fitzgerald","year":"1997","journal-title":"J. Am. Chem. Soc."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"2871","DOI":"10.1111\/jace.16108","article-title":"NMR study on reaction processes from aluminum chloride hydroxides to alpha alumina powders","volume":"102","author":"Senna","year":"2019","journal-title":"J. Am. Ceram. Soc."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"235410","DOI":"10.1103\/PhysRevB.84.235410","article-title":"Faraday effect in graphene enclosed in an optical cavity and the equation of motion method for the study of magneto-optical transport in solids","volume":"84","author":"Ferreira","year":"2011","journal-title":"Phys. Rev. B"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"169","DOI":"10.1016\/j.ssnmr.2007.05.002","article-title":"A (27)Al MAS NMR study of a sol-gel produced alumina: Identification of the NMR parameters of the theta-Al(2)O(3) transition alumina phase","volume":"31","author":"Savin","year":"2007","journal-title":"Solid State Nucl. Magn. Reson."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"696","DOI":"10.1016\/S0022-0248(99)00436-4","article-title":"Growth characteristics of boehmite-derived ultrafine theta and alpha-alumina particles during phase transformation","volume":"208","author":"Wen","year":"2000","journal-title":"J. Cryst. Growth"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1967","DOI":"10.1016\/S0955-2219(99)00016-3","article-title":"Sintering of a transition alumina: Effects of phase transformation, powder characteristics and thermal cycle","volume":"19","author":"Legros","year":"1999","journal-title":"J. Eur. Ceram. Soc."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"L141","DOI":"10.1016\/0926-860X(93)80244-K","article-title":"Preparation of high surface area \u03b1-Al2O3 and its surface properties","volume":"105","author":"Tsuchida","year":"1993","journal-title":"Appl. Catal. A Gen."},{"key":"ref_22","first-page":"339","article-title":"\u00dcber die thermische Umwandlung des Diaspors","volume":"15","author":"Wefers","year":"1962","journal-title":"Z. Erzbergbau Met."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"151","DOI":"10.1016\/0926-860X(94)85049-6","article-title":"High surface area a-alumina. I","volume":"111","author":"Mao","year":"1994","journal-title":"Appl. Catal. A Gen."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"4861","DOI":"10.1016\/j.ceramint.2012.02.076","article-title":"Using modified Pechini method to synthesize \u03b1-Al2O3 nanoparticles of high surface area","volume":"38","author":"Zaki","year":"2012","journal-title":"Ceram. Int."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2111","DOI":"10.1016\/j.ceramint.2008.11.011","article-title":"High surface area \u03b1-alumina preparation by using urban waste","volume":"35","author":"Cordero","year":"2009","journal-title":"Ceram. Int."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1016\/j.matchemphys.2007.02.044","article-title":"Synthesis of thermo-stable high surface area alumina powder from sol\u2013gel derived boehmite","volume":"104","author":"Kim","year":"2007","journal-title":"Mater. Chem. Phys."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"69","DOI":"10.1002\/zaac.19754150110","article-title":"Revised phase diagram and X-ray data of The Mn3O4-Al2O3 System in air","volume":"415","author":"Dekker","year":"1975","journal-title":"Z. Anorg. Allg. Chem."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1016\/j.rinp.2018.11.068","article-title":"Fabrication of \u03b1-alumina fibers by sol-gel and electrospinning of aluminum nitrate precursor solutions","volume":"12","year":"2019","journal-title":"Results Phys."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"111921","DOI":"10.1016\/j.micromeso.2022.111921","article-title":"Synthesis and characterization of activated alumina with high thermal stability by a low-heat solid-phase precursor method","volume":"337","author":"Xu","year":"2022","journal-title":"Microporous Mesoporous Mater."}],"container-title":["Materials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1944\/16\/8\/3047\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,10]],"date-time":"2023-12-10T16:34:58Z","timestamp":1702226098000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1944\/16\/8\/3047"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,12]]},"references-count":29,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2023,4]]}},"alternative-id":["ma16083047"],"URL":"http:\/\/dx.doi.org\/10.3390\/ma16083047","relation":{},"ISSN":["1996-1944"],"issn-type":[{"value":"1996-1944","type":"electronic"}],"subject":["General Materials Science"],"published":{"date-parts":[[2023,4,12]]}}}