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Improved hydrogen storage in the modified metal-organic frameworks by hydrogen spillover effect

被引：167
作者：
Liu, Ying-Ya
Zeng, Ju-Lan
Zhang, Jian
Xu, Fen [1 ]
Sun, Li-Xian
机构：
[1] Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2007年 / 32卷 / 16期
基金：
中国国家自然科学基金;
关键词：
hydrogen storage; metal-organic frameworks; hydrogen spillover;
D O I：
10.1016/j.ijhydene.2007.04.029
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：
In the present work, in order to enhance hydrogen storage capacity of metal-organic frameworks (MOFs) at room temperature, two ways are carried out for MOFs modification. One is a simple doping of metal-supported carbon catalyst with MOFs; the other is doping metal-supported carbon catalyst through a carbon bridge with MOFs. Pressure-composition (P-C) isotherms of these modified and unmodified samples are investigated using Severts-type apparatus at 293 K and the pressure ranging from 0.01 to 5.0 Mpa. Through these modification techniques based on the hydrogen spillover effect, especially the carbon-bridged catalyst doping technique, the modified samples witnessed a great increase in hydrogen uptakes when compared with the pristine samples. The storage capacity of modified MTL-101 and MIL-53 at 5.0MPa and 293 K are found to be 1.14 and 0.63 wt%, which are greatly increased as compared to the pristine-MOFs. (c) 2007 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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页码：4005 / 4010
页数：6
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