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  Selective Template Removal by Thermal Depolymerization to Obtain Mesostructured Molybdenum Oxycarbide

Schieder, M., Lunkenbein, T., Bojer, C., Dulle, M., vom Stein, J. M., Auffermann, G., et al. (2015). Selective Template Removal by Thermal Depolymerization to Obtain Mesostructured Molybdenum Oxycarbide. Zeitschrift für anorganische und allgemeine Chemie, 641(10), 1829-1834. doi:10.1002/zaac.201500219.

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 Creators:
Schieder, Martin1, Author
Lunkenbein, Thomas2, Author           
Bojer, Carina1, Author
Dulle, Martin3, Author
vom Stein, Julia Mareike4, Author           
Auffermann, Gudrun5, Author           
Loebling, Tina6, Author
Schoebel, Judith6, Author
Schmalz, Holger6, Author
Breu, Josef1, Author
Affiliations:
1Lehrstuhl für Anorganische Chemie I, Universität Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany, ou_persistent22              
2Fritz-Haber Institut der Max-Planck Gesellschaft, Abteilung für Anorganische Chemie, Faradayweg 4–6, 14195 Berlin, Germany, ou_persistent22              
3Lehrstuhl für Physikalische Chemie I, Universität Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany, ou_persistent22              
4Research Department Schüth, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445589              
5Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany, ou_persistent22              
6Lehrstuhl für Makromolekulare Chemie II, Universität Bayreuth, Universitätsstr. 30, 95440 Bayreuth, Germany, ou_persistent22              

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Free keywords: Organic-inorganic hybrid composites; Template synthesis; Template removal by depolymerization; Non-woven network; Calcination
 Abstract: The carbon content of mesostructured organic-inorganic hybrid material of a cylindrical block copolymer template of poly(2-vinylpyridine)-block-poly(allyl methacrylate) (P2VP-b-PAMA) and ammonium paramolybdate (APM) could be reduced by thermal depolymerization. By calcination in vacuo at 320 °C the PAMA core can be completely removed while the remaining P2VP brush preserves the mesostructure. The P2VP-APM composite can then be carburized in-situ to MoOxCy in a second pyrolysis step without any additional carbon source but P2VP. The molybdenum oxycarbide nanotubes obtained, form hierarchically porous non-woven structures, which were tested as catalyst in the decomposition of NH3. They proved to be catalytically active at temperatures above 450 °C. The activation energy was estimated from an Arrhenius Plot to be 127 kJ·mol–1.

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Language(s): eng - English
 Dates: 2015-07-172015-08-01
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1002/zaac.201500219
 Degree: -

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Title: Zeitschrift für anorganische und allgemeine Chemie
  Other : Journal of Inorganic and General Chemistry
  Other : J. Inorg. Gen Chem.
  Abbreviation : Z. Anorg. Allg. Chem.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 641 (10) Sequence Number: - Start / End Page: 1829 - 1834 Identifier: ISSN: 0044-2313
CoNE: https://pure.mpg.de/cone/journals/resource/954925453895