TY - CHAP A1 - Utgenannt, Stephan A1 - Hansen, Felix A1 - Klepel, Olaf A1 - Jarczewski, Sebastian A1 - Wach, Anna A1 - Kustrowski, Piotr A1 - Erler, Thomas A1 - Bron, Michael T1 - A modular concept for the preparation of carbon based catalysts T2 - Carbon 2015 : innovation with carbon materials; the Annual World Conference on Carbon, Dresden, Germany, July 12 - 17, 2015 Y1 - 2015 SP - S. 294 PB - Deutsche Keramische Gesellschaft e.V. CY - Köln ER - TY - CHAP A1 - Beckmann, Jens A1 - Günther, David A1 - Schmidt, Peer A1 - Schöneich, Michael A1 - Klepel, Olaf T1 - Template assisted synthesis of porous carbon materials using porous concrete as a template T2 - 5th International Sypmosium on “Carbon on Catalysis”, Books of abstracts, Bressanone/Brixen, 2012 Y1 - 2012 ER - TY - CHAP A1 - Walter, Reni A1 - Günther, David A1 - Klepel, Olaf A1 - Niebrzydowska, Paula A1 - Wach, Anna A1 - Kuśtrowski, Piotr T1 - Carbon catalysts obtained by template assisted routes for oxidative dehydrogenation of ethylbenzene T2 - Annual World Conference on Carbon : (Carbon 2012) Krakow, Poland 17-22 June 2012 Y1 - 2012 SN - 978-1-62993-436-5 VL - 1 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Walter, Reni A1 - Günther, David A1 - Klepel, Olaf A1 - Schilling, Thorsten A1 - Erler, Thomas A1 - Bron, Michael T1 - Carbon catalysts prepared by template assisted routes for electrochemical oxygen reduction T2 - Annual World Conference on Carbon : (Carbon 2012) Krakow, Poland 17-22 June 2012 Y1 - 2012 SN - 978-1-62993-436-5 VL - 1 SP - 853 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Beckmann, Jens A1 - Günther, David A1 - Klepel, Olaf A1 - Schmidt, Peer T1 - Porous concrete as a template for the synthesis of porous carbon materials T2 - Annual World Conference on Carbon : (Carbon 2012) Krakow, Poland 17-22 June 2012 Y1 - 2012 SN - 978-1-62993-436-5 SP - 854 PB - Curran CY - Red Hook, NY ER - TY - CHAP A1 - Taubert, Michael A1 - Beckmann, Jens A1 - Zimmermann, Jörg A1 - Lange, Andreas A1 - Enke, Dirk A1 - Klepel, Olaf T1 - Carbon monoliths obtained from porous concrete as a template T2 - Porous systems: from novel materials to sustainable solutions : 6th FEZA conference : 8 - 11 September 2014, Universität Leipzig, Germany ; book of abstracts Y1 - 2014 SP - S. 269 PB - DECHEMA CY - Frankfurt am Main ER - TY - CHAP A1 - Utgenannt, Stephan A1 - Vormelchert, Carolin A1 - Klepel, Olaf A1 - Jarczewski, Sebastian A1 - Drozdek, Michal A1 - Kustrowski, Piotr A1 - Erler, Thomas A1 - Rümmler, Stephan A1 - Bron, Michael T1 - Template assisted synthesis of porous carbon catalysts with systematically varied properties T2 - The zeolites : materials with engineered properties : book of abstracts / 7th FEZA Conference, July 3-7, 2017, Sofia, Bulgaria Y1 - 2017 SP - S. 199 CY - Sofia ER - TY - CHAP A1 - Bölte, Jens-Henning Ingo Holger A1 - Utgenannt, Stephan A1 - Klepel, Olaf A1 - Erler, Thomas A1 - Rümmler, Stephan A1 - Bron, Michael T1 - Heteroatom doped porous carbon catalysts with systematically varied properties obtained by template assisted synthesis T2 - Book of abstracts, 8th International Symposium on Carbon for Catalysis, CarboCat–VIII, 26. – 29.06. 2018, Porto Y1 - 2018 UR - http://carbocatviii.eventos.chemistry.pt/images/abstract_book.pdf SN - 978-989-8124-22-7 SP - S. 69 PB - Sociedade Portuguesa de Química CY - Porto ER - TY - GEN A1 - Klepel, Olaf A1 - Danneberg, Nina T1 - Porous Carbon Monoliths Made from Cellulose and Starch T2 - C – Journal of Carbon Research Y1 - 2020 U6 - https://doi.org/10.3390/c6020032 SN - 2311-5629 VL - 6 IS - 2 SP - 11 ER - TY - CHAP A1 - Klepel, Olaf ED - Witzlack-Makarevich, Kai ED - Wulff, Nadja ED - Storz, Coretta T1 - Ha ho he wir hassen den BFC! oder die Mauer muss weg! T2 - Sushi, Sandmann, Sozialismus: Kultur- und Landeskunde der DDR : Ein Text- und Übungsbuch für den DaF-Unterricht Y1 - 2020 SN - 978-3-7329-0686-4 SN - 978-3-7329-9304-8 SP - 212 EP - 214 PB - Frank & Timme Verlag für wissenschaftliche Literatur CY - Berlin ET - 1. Auflage ER - TY - GEN A1 - González-Castaño, Miriam A1 - Navarro de Miguel, Juan Carlos A1 - Sinha, F. A1 - Ghomsi Wabo, Samuel A1 - Klepel, Olaf A1 - Arellano-García, Harvey T1 - Cu supported Fe-SiO2 nanocomposites for reverse water gas shift reaction T2 - Journal of CO2 Utilization N2 - This work analyses the catalytic activity displayed by Cu/SiO2, Cu-Fe/SiO2 and Cu/FSN (Fe-SiO2 nanocomposite) catalysts for the Reverse Water Gas Shift reaction. Compared to Cu/SiO2 catalyst, the presence of Fe resulted on higher CO’s selectivity and boosted resistances against the constitution of the deactivation carbonaceous species. Regarding the catalytic performance however, the extent of improvement attained through incorporation Fe species strongly relied on the catalysts’ configuration. At 30 L/gh and H2:CO2 ratios = 3, the performance of the catalysts’ series increased according to the sequence: Cu/SiO2 < Cu-Fe/SiO2 << Cu/FSN. The remarkable catalytic enhancements provided by Fe-SiO2 nanocomposites under different RWGS reaction atmospheres were associated to enhanced catalyst surface basicity’s and stronger Cu-support interactions. The catalytic promotion achieved by Fe-SiO2 nanocomposites argue an optimistic prospective for nanocomposite catalysts within future CO2-valorising technologies. KW - Cu catalysts KW - Fe-doped silica KW - Nanocomposites KW - Reverse water gas shift reaction Y1 - 2021 U6 - https://doi.org/10.1016/j.jcou.2021.101493 SN - 2212-9820 VL - 46 ER - TY - GEN A1 - Ghomsi Wabo, Samuel A1 - Klepel, Olaf T1 - Nitrogen release and pore formation through KOH activation of nitrogen‑doped carbon materials: an evaluation of the literature T2 - Carbon Letters Y1 - 2021 U6 - https://doi.org/10.1007/s42823-021-00252-3 SN - 2233-4998 SN - 1976-4251 ER - TY - GEN A1 - Klepel, Olaf A1 - Utgenannt, Stephan A1 - Vormelchert, Carolin A1 - König, Mark A1 - Meißner, André A1 - Hansen, Felix A1 - Bölte, Jens-Henning Ingo Holger A1 - Sieber, Tim A1 - Heinemann, Robert A1 - Bron, Michael A1 - Rokicinska, Anna A1 - Jarczewski, Sebastian A1 - Kustrowski, Piotr T1 - Redox catalysts based on amorphous porous carbons T2 - Microporous Mesoporous Materials Y1 - 2021 U6 - https://doi.org/10.1016/j.micromeso.2021.111257 SN - 1387-1811 VL - 323 ER - TY - GEN A1 - Gonzalez-Castano, Miriam A1 - Navarro de Miguel, Juan Carlos A1 - Boelte, Jens-H. A1 - Centeno, Miguel Angel A1 - Klepel, Olaf A1 - Arellano-García, Harvey T1 - Assessing the impact of textural properties in Ni–Fe catalysts for CO2 methanation performance T2 - Microporous and Mesoporous Materials N2 - In heterogeneous catalysis, the benefits of employing adequate textural properties on the catalytic performances are usually stated. Nevertheless, the quantification of the extent of improvement is not an easy task since variations on the catalysts’ specific areas and pore structures might involve modifications on a number of other surface catalytic features. This study establishes the impact of the catalyst textural properties on the CO2 methanation performance by investigating bimetallic Ni–Fe catalysts supported over carbon supports with different textural properties regarding surface area and pore structure. The comparable metal loading and dispersions attained for all systems enabled establishing forthright relationships between the catalyst textural properties and CO2 methanation rate. Once the influence of the external mass diffusions on the catalysts’ performance was experimentally discarded, the estimated Thiele modulus and internal effectiveness (φ and ηEff) values showed that the catalyst performance was majorly governed by the surface reaction rate whilst the pore size affected in no significant manner within the examined range (Dpore = 10.2 to 5.8 nm). Therefore, the rapport between the catalyst performance and surface area was quantified for the CO2 methanation reaction over Ni–Fe catalysts: increasing the surface area from 572 to 802 m2/g permit obtaining ca. 10% higher CO2 conversions. KW - Ni-Fe catalysts KW - CO2 methanation KW - Surface area KW - Pore size KW - Thiele modulus Y1 - 2021 U6 - https://doi.org/10.1016/j.micromeso.2021.111405 SN - 1387-1811 VL - 327 ER -