000908718 001__ 908718
000908718 005__ 20240712112832.0
000908718 0247_ $$2Handle$$a2128/32399
000908718 037__ $$aFZJ-2022-02787
000908718 041__ $$aEnglish
000908718 1001_ $$0P:(DE-Juel1)165598$$aSchatz, Michael$$b0$$eCorresponding author$$ufzj
000908718 1112_ $$a10th International Conference on "Fuel Science - From Production to Propulsion"$$cAachen$$d2022-05-10 - 2022-05-12$$wGermany
000908718 245__ $$aRevealing local pH gradients by in operando 13C MRI
000908718 260__ $$c2022
000908718 3367_ $$033$$2EndNote$$aConference Paper
000908718 3367_ $$2BibTeX$$aINPROCEEDINGS
000908718 3367_ $$2DRIVER$$aconferenceObject
000908718 3367_ $$2ORCID$$aCONFERENCE_POSTER
000908718 3367_ $$2DataCite$$aOutput Types/Conference Poster
000908718 3367_ $$0PUB:(DE-HGF)24$$2PUB:(DE-HGF)$$aPoster$$bposter$$mposter$$s1667798656_12977$$xAfter Call
000908718 520__ $$aThe study of local reaction conditions at catalytic surfaces in an operating cell is a challenging task. In particular, the CO2 electroreduction on copper is known to be highly sensitive to local changes of pH value and electrolyte concentration. We herewith present an in operando Nuclear Magnetic Resonance technique that enables spatially and temporally resolved determination of these values using the 13C resonances of the CO2/HCO3-/CO32- equilibrium. A phase-encoding pulse sequence using spin echoes enables chemical shift resolved imaging along one spatial dimension, i.e. the longitudinal axis of a NMR tube. Placing the copper working electrode perpendicular to this axis, 13C spectra are obtained as a function of distance to the electrode. The spectral data of the CO2 and the averaged carbonate (HCO3-/CO32-) resonances are used to determine local pH and concentrations. When a constant potential is applied, increasing pH values and decreasing electrolyte concentrations are observed as a result of the consumption of H+ and CO2 from the equilibrium with HCO3-. Moreover, the presented method offers wide-ranging applicability of materials, concentrations and potentials, and it can provide additional information on chemistry and mobility of reactants.
000908718 536__ $$0G:(DE-HGF)POF4-1232$$a1232 - Power-based Fuels and Chemicals (POF4-123)$$cPOF4-123$$fPOF IV$$x0
000908718 536__ $$0G:(GEPRIS)390919832$$aDFG project 390919832 - EXC 2186: Das Fuel Science Center – Adaptive Umwandlungssysteme für erneuerbare Energie- und Kohlenstoffquellen (390919832)$$c390919832$$x1
000908718 7001_ $$0P:(DE-Juel1)169518$$aJovanovic, Sven$$b1$$ufzj
000908718 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b2$$ufzj
000908718 7001_ $$0P:(DE-Juel1)162401$$aGranwehr, Josef$$b3$$ufzj
000908718 8564_ $$uhttps://juser.fz-juelich.de/record/908718/files/Conference%20Poster.pdf$$yOpenAccess
000908718 909CO $$ooai:juser.fz-juelich.de:908718$$pdriver$$pVDB$$popen_access$$popenaire
000908718 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165598$$aForschungszentrum Jülich$$b0$$kFZJ
000908718 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)169518$$aForschungszentrum Jülich$$b1$$kFZJ
000908718 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)156123$$aForschungszentrum Jülich$$b2$$kFZJ
000908718 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)162401$$aForschungszentrum Jülich$$b3$$kFZJ
000908718 9131_ $$0G:(DE-HGF)POF4-123$$1G:(DE-HGF)POF4-120$$2G:(DE-HGF)POF4-100$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-1232$$aDE-HGF$$bForschungsbereich Energie$$lMaterialien und Technologien für die Energiewende (MTET)$$vChemische Energieträger$$x0
000908718 9141_ $$y2022
000908718 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000908718 920__ $$lyes
000908718 9201_ $$0I:(DE-Juel1)IEK-9-20110218$$kIEK-9$$lGrundlagen der Elektrochemie$$x0
000908718 9801_ $$aFullTexts
000908718 980__ $$aposter
000908718 980__ $$aVDB
000908718 980__ $$aUNRESTRICTED
000908718 980__ $$aI:(DE-Juel1)IEK-9-20110218
000908718 981__ $$aI:(DE-Juel1)IET-1-20110218