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- W3147652892 abstract "N-heterocyclic compounds such as octahydroindole and dodecahydro-N-ethylcarbazole have been proposed as suitable liquid organic hydrogen carriers for chemical hydrogen storage. Following these studies, we focused on hydrogen-rich 2,2′-bipiperidine with a hydrogen storage capacity of 7.1 wt % and hydrogen-lean 2,2′-bipyridine. Both were adsorbed on Ni(111), and the temperature-induced reaction mechanism and decomposition were studied. The reaction was investigated using synchrotron-based XPS, NEXAFS, and TPD experiments. Upon adsorption, the formation of a flat-lying chemisorbed layer is observed. Above 370 K, 2,2′-bipyridine is dehydrogenated in the α-position to the nitrogen atoms to form an α-2,2′-bipyridyl species with a tilted adsorption geometry. The hydrogen-rich 2,2′-bipiperidine is partially dehydrogenated above 180 K and deprotonated at the nitrogen atoms above 250 K. Above 320 K, α-2,2′-bipyridyl is formed, which is accompanied by a byproduct that is partially dehydrogenated at the carbon atoms. Above 400 K, we observe the decomposition of the α-2,2′-bipyridyl species." @default.
- W3147652892 created "2021-04-13" @default.
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- W3147652892 date "2021-04-08" @default.
- W3147652892 modified "2023-09-24" @default.
- W3147652892 title "Model Catalytic Studies of the LOHC System 2,2′-Bipiperidine/2,2′-Bipyridine on Ni(111)" @default.
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- W3147652892 doi "https://doi.org/10.1021/acs.jpcc.1c00726" @default.
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