TY - JOUR
T1 - Determination of chemical shift of gas-phase hydrogen molecules by 1H nuclear magnetic resonance
AU - Fujiwara, Hirotada
AU - Yamabe, Junichiro
AU - Nishimura, Shin
N1 - Funding Information:
This research has been partly supported by the project ‘Fundamental Research Project on Advanced Hydrogen Science (2006–2012)’ of New Energy and Industrial Technology Development Organization (NEDO), Japan. Many thanks are due to Dr. Midori Watanabe (Center of Advanced Instrumental Analysis, Kyushu University) for their kind assistance in solution state and slide state NMR measurement. The authors also thank Prof. Tadashi Narita and Prof. Hiroshi Hamana (Saitama Institute of Technology) for their generous guidance for NMR measurement.
PY - 2010/9/30
Y1 - 2010/9/30
N2 - The precise and detailed chemical shift of gas-phase hydrogen molecules was successfully determined by 1H nuclear magnetic resonance (NMR), avoiding the intervention of neighboring molecules such as in hydrogen occluding materials (free hydrogen). The measurement was conducted with double walled NMR sample tube taking into consideration the change of hydrogen pressure. The inner tube was filled with standard substance (DHO in D2O at 4.8 ppm). The chemical shift of free hydrogen molecules was determined to be 7.40 ± 0.01 ppm at 0.18 MPa, 25 °C, which is different from previously reported chemical shifts of hydrogen gas with intervention of neighboring molecules.
AB - The precise and detailed chemical shift of gas-phase hydrogen molecules was successfully determined by 1H nuclear magnetic resonance (NMR), avoiding the intervention of neighboring molecules such as in hydrogen occluding materials (free hydrogen). The measurement was conducted with double walled NMR sample tube taking into consideration the change of hydrogen pressure. The inner tube was filled with standard substance (DHO in D2O at 4.8 ppm). The chemical shift of free hydrogen molecules was determined to be 7.40 ± 0.01 ppm at 0.18 MPa, 25 °C, which is different from previously reported chemical shifts of hydrogen gas with intervention of neighboring molecules.
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U2 - 10.1016/j.cplett.2010.08.054
DO - 10.1016/j.cplett.2010.08.054
M3 - Article
AN - SCOPUS:77957017622
VL - 498
SP - 42
EP - 44
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-3
ER -