Hattori Yoshiyuki, Tanaka Hideki, Okino Fujio, Touhara Hidekazu, Nakahigashi Yoshitaka, Utsumi Shigenori, Kanoh Hirofumi, Kaneko Katsumi
Department of Chemistry, Faculty of Science, Chiba University, Inage, Japan.
J Phys Chem B. 2006 May 25;110(20):9764-7. doi: 10.1021/jp0618025.
Quantum sieving of activated carbon fibers (ACFs) and their fluorides was observed for H(2) and D(2) adsorption at 20 K. Fluorination reduced the slit-shaped pore width of ACFs by 0.2 nm. The activated carbon fibers can act as highly efficient quantum sieves for H(2) and D(2), because the effective size of an H(2) molecule is larger than that of a D(2) molecule due to the uncertainty principle and the molecular size difference between H(2) and D(2) is significant in the micropore space. The D(2)/H(2) selectivity of ACFs evaluated by ideal adsorption solution theory was larger than that of the fluorinated ACFs.
在20 K下观察到活性炭纤维（ACF）及其氟化物对H₂和D₂吸附的量子筛分现象。氟化使ACF的狭缝形孔径减小了0.2 nm。活性炭纤维可作为H₂和D₂的高效量子筛，因为根据不确定性原理，H₂分子的有效尺寸大于D₂分子，且H₂和D₂在微孔空间中的分子尺寸差异显著。通过理想吸附溶液理论评估的ACF的D₂/H₂选择性大于氟化ACF的选择性。
