Related Experiment Video
Updated: Apr 27, 2026

Isotopic Effect in Double Proton Transfer Process of Porphycene Investigated by Enhanced QM/MM Method
Published on: July 19, 2019
An exceptional kinetic quantum sieving separation effect of hydrogen isotopes on commercially available carbon
Yanlong Xing1, Jinjun Cai, Liangjun Li
1Institute of Unconventional Hydrocarbon and New Energy Sources, China University of Petroleum (East China), Qingdao 266580, China.
Abstract:
The quantum sieving effect of H2/D2 at 77 K on commercially available carbon molecular sieves (1.5GN-H and 3KT-172) was studied. An exceptional reverse kinetic quantum effect is observed on 1.5GN-H where D2 diffuses much faster than H2 with a ratio of up to 5.83 at low pressure, and the difference is still very evident even as the pressure increases up to 1 bar. D2 also diffuses faster than H2 on 3KT-172 with a ratio of up to 1.86. However, the reverse kinetic sieving disappears in a polymer-based carbon (PC). The present kinetic quantum sieving effect of H2 and D2 at 77 K on 1.5GN-H is the highest to date.
Related Concept Videos
¹³C NMR: ¹H–¹³C Decoupling
A broadband decoupling technique is used to simplify these complex, sometimes overlapping, signals. Broadband decoupling relies on a...
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
High-Resolution Mass Spectrometry (HRMS)
Mass Spectrometry: Isotope Effect
Chemical Ionization (CI) Mass Spectrometry
Spin–Spin Coupling: One-Bond Coupling

