Quantum sieving effect of modified activated carbon fibers on H2 and D2 adsorption at 20 K.
Quantum sieving effect of modified activated carbon fibers on H2 and D2 adsorption at 20 K.
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DOI：
10.1002/chin.200635020
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发表时间：
2006-05
期刊：
影响因子：
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通讯作者：
Y. Hattori;Hideki Tanaka;F. Okino;H. Touhara;Y. Nakahigashi;Shigenori Utsumi;H. Kanoh;K. Kaneko
中科院分区：
文献类型：
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作者：
Y. Hattori;Hideki Tanaka;F. Okino;H. Touhara;Y. Nakahigashi;Shigenori Utsumi;H. Kanoh;K. Kaneko
研究了活性炭纤维（ACF）及其氟化物在20 K下对H（2）和D（2）的吸附行为。氟化使ACF的狭缝状孔宽减小了0.2nm。活性炭纤维可以作为H（2）和D（2）的高效量子筛，因为由于测不准原理，H（2）分子的有效尺寸大于D（2）分子的有效尺寸，并且H（2）和D（2）之间的分子尺寸差异在量子空间中是显著的。用理想吸附溶液理论计算的活性炭纤维的D（2）/H（2）选择性大于含氟活性炭纤维。
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.