Study of metal-organic framework MIL-101(Cr) for natural gas (methane) storage and compare with other MOFs (metal-organic frameworks)
Study of metal-organic framework MIL-101(Cr) for natural gas (methane) storage and compare with other MOFs (metal-organic frameworks)
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DOI：
10.1016/j.energy.2015.08.096
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发表时间：
2015-11-01
期刊：
影响因子：
9
通讯作者：
Chakraborty, Anutosh
中科院分区：
文献类型：
--
作者：
Kayal, Sibnath;Sun, Baichuan;Chakraborty, Anutosh
天然气主要含有甲烷（CH4），具有替代石油作为汽车燃料的潜力。然而，以足够高的密度储存天然气以满足行驶里程的要求是一项具有挑战性的任务。一种有前景的解决方案是使用多孔材料在较低的压力和温度下吸附天然气，从而提高储存密度。本文对MIL-101(Cr) MOF（金属有机骨架）吸附CH4的合成、表征和性能评价进行了广泛的研究。在298 K时，观察到MIL-101(Cr) MOF上CH4的总吸收量约为(i)在35 bar时为150 cm(3)/cm(3), （ii）在65 bar时为215 cm(3)/cm(3), （iii）在5 bar时为30 cm(3)/cm(3)。此外，我们还展示了一种新颖的想法，即利用LNG（液化天然气）再气化将CH4储存在低于临界点温度的ANG（吸附天然气）容器中的mof上。这种LNG - ANG耦合提高了ANG存储的竞争力，增加了CH4的工作容量。采用LNG-ANG耦合，发现MIL-101（Cr）具有较高的CH4输送量或工作容量，在工作参数从160 K的6 bar到298 K的5 bar范围内为240 cm(3)/cm(3)，在工作参数从160 K的1.2 bar到298 K的5 bar范围内为125 cm(3)/cm(3)。(C) 2015 Elsevier Ltd.版权所有。
Natural gas, containing mainly methane (CH4), has the potential to substitute petroleum as fuel for vehicles. However, the storage of natural gas at adequately high densities to fulfil the requirement of driving range is a challenging task. One prospective solution is the use of porous materials to adsorb natural gas at lower pressures and temperatures resulting in higher density storage. In this article, we present an extensive study on synthesis, characterization and property evaluation of MIL-101(Cr) MOF (metal-organic framework) for CH4 adsorption. At 298 K, it is observed that the total volumetric uptake of CH4 on MIL-101(Cr) MOF is about (i) 150 cm(3)/cm(3) at 35 bar, (ii) 215 cm(3)/cm(3) at 65 bar, and (iii) 30 cm(3)/cm(3) at 5 bar. Further, we have demonstrated a novel idea to store CH4 on MOFs in an ANG (adsorbed natural gas) vessel below critical point temperature employing LNG (liquefied natural gas) regasification. This LNG ANG coupling improves the competitiveness of ANG storage and increases the CH4 working capacity. Employing LNG-ANG coupling, it is found that MIL-101(Cr) exhibits high CH4 delivery or working capacity which is (i) 240 cm(3)/cm(3) for the operating parameters ranging from 6 bar at 160 K to 5 bar at 298 K, and (ii) 125 cm(3)/cm(3) for the operating parameters varying from 1.2 bar at 160 K to 5 bar at 298 K. (C) 2015 Elsevier Ltd. All rights reserved.