Adsorption and Diffusion Phenomena in Crystal Size Engineered ZIF-8 MOF

被引：218

作者：

Tanaka, Shunsuke ^{[1
,2
]}

Fujita, Kosuke ^{[1
]}

Miyake, Yoshikazu ^{[1
,2
]}

Miyamoto, Manabu ^{[3
]}

Hasegawa, Yasuhisa ^{[4
]}

Makino, Takashi ^{[4
]}

Van der Perre, Stijn ^{[5
]}

Saint Remi, Julien Cousin ^{[5
]}

Van Assche, Tom ^{[5
]}

Baron, Gino V. ^{[5
]}

Denayer, Joeri F. M. ^{[5
]}

机构：

[1] Kansai Univ, Dept Chem Energy & Environm Engn, Suita, Osaka 5648680, Japan

[2] Kansai Univ, ORDIST, Suita, Osaka 5648680, Japan

[3] Gifu Univ, Dept Chem & Biomol Sci, Gifu 5011193, Japan

[4] Natl Inst Adv Ind Sci & Technol, Res Ctr Compact Chem Syst, Miyagino Ku, Sendai, Miyagi 9838551, Japan

[5] Vrije Univ Brussel, Dept Chem Engn, B-1050 Brussels, Belgium

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2015年 / 119卷 / 51期

关键词：

ZEOLITIC IMIDAZOLATE FRAMEWORK-8; INDUCED STRUCTURAL TRANSITION; ROOM-TEMPERATURE SYNTHESIS; SURFACE-RESISTANCE; RAMAN-SPECTROSCOPY; SORPTION KINETICS; MASS-TRANSFER; FLEXIBILITY; TRANSPORT; PHASE;

D O I：

10.1021/acs.jpcc.5b09520

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

ZIF-8 is a flexible zeolitic imidazole-based metal organic framework whose narrow pore apertures swing open by reorientation of imidazolate linkers and expand when probed with guest molecules. This work reports on the crystal size dependency of both structural transitions induced by N-2 and Ar adsorption and dynamic adsorption behavior of n-butanol using well-engineered ZIF-8 crystals with identical surface area and micropore volume. It is found that the crystal downsizing of ZIP-8 regulates the structural flexibility in equilibrium adsorption and desorption of N-2 and Ar. Adsorption kinetics of n-butanol in ZIF-8 are strongly affected by the crystal size, however, not according to a, classical intracrystalline diffusion, mechanism. Our results suggest that Structural transitions and transport properties are dominated by crystal surface effects. Crystal downsizing increases the importance of such surface barriers.

引用

页码：28430 / 28439

页数：10

共 68 条

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