id,collection,dc.contributor.author,dc.date.accessioned,dc.date.available,dc.date.issued,dc.description.abstract[en],dc.format.extent,dc.identifier.uri,dc.language,dc.rights.uri,dc.subject.ddc,dc.subject[en],dc.title,dc.type,dcterms.accessRights.openaire,dcterms.bibliographicCitation.articlenumber,dcterms.bibliographicCitation.doi,dcterms.bibliographicCitation.journaltitle,dcterms.bibliographicCitation.url,dcterms.bibliographicCitation.volume,dcterms.isPartOf.eissn,refubium.affiliation,refubium.affiliation.other,refubium.resourceType.isindependentpub,refubium.resourceType.provider "0c089e41-91af-410a-99e2-8a625c96a86d","fub188/16","Thum, Lukas||Riedel, Wiebke||Milojevic, Natasa||Guan, Chengyue||Trunschke, Annette||Dinse, Klaus-Peter||Risse, Thomas||Schomäcker, Reinhard||Schlögl, Robert","2022-04-07T14:53:36Z","2022-04-07T14:53:36Z","2022","In this study, first-row transition metal-doped calcium oxide materials (Mn, Ni, Cr, Co., and Zn) were synthesized, characterized, and tested for the OCM reaction. Doped carbonate precursors were prepared by a co-precipitation method. The synthesis parameters were optimized to yield materials with a pure calcite phase, which was verified by XRD. EPR measurements on the doped CaO materials indicate a successful substitution of Ca2+ with transition metal ions in the CaO lattice. The materials were tested for their performance in the OCM reaction, where a beneficial effect towards selectivity and activity effect could be observed for Mn, Ni, and Zn-doped samples, where the selectivity of Co- and Cr-doped CaO was strongly reduced. The optimum doping concentration could be identified in the range of 0.04-0.10 atom%, showing the strongest decrease in the apparent activation energy, as well as the maximum increase in selectivity.","14 Seiten","https://refubium.fu-berlin.de/handle/fub188/34636||http://dx.doi.org/10.17169/refubium-34354","eng","https://creativecommons.org/licenses/by/4.0/","500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften","oxidative coupling of methane||calcium oxide||doping||EPR||transition metal doping||heterogeneous catalysis","Transition-Metal-Doping of CaO as Catalyst for the OCM Reaction, a Reality Check","Wissenschaftlicher Artikel","open access","768426","10.3389/fchem.2022.768426","Frontiers in Chemistry","https://doi.org/10.3389/fchem.2022.768426","10","2296-2646","Biologie, Chemie, Pharmazie||Physik","Institut für Chemie und Biochemie:::bdaf1c47-f341-464f-b012-0d24067d34b8:::600||Institut für Experimentalphysik:::0e15dd66-95f1-40d5-8307-e68203f86a76:::600","no","WoS-Alert"