Improved synthesis and hydrogen storage of a microporous metal–organic framework material

Cheng, Shaojuan; Liu, Shaobing; Zhao, Qiang; Li, Jinping

doi:10.1016/j.enconman.2009.01.014

Cited by 20 publications

(14 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3] However, one of the major challenges in the wide application of hydrogen is the lack of safe,c onvenient,a nd low-costs ystems to transport, store,a nd distribute it. [4][5][6] To date,v arious methods for the storage of hydrogen,s uch as compressed into liquid, as metal hydrides, [7][8][9] in carbon materials, [10] in graphite, [11] and as metal-organic frameworks, [12][13][14] have been proposed. Although hydrogen can be stored in different forms,e achs torage method has advantagesa nd drawbacks due to the constraints of safety,s ize,w eight, cost, and efficiency requirements.…”

Section: Introductionmentioning

confidence: 99%

Montmorillonite‐Supported Iron Oxide for Hydrogen Storage by Chemical Looping

Xiao

Zhang

2017

Energy Tech

View full text Add to dashboard Cite

A technology for hydrogen storage is proposed based on the repeated reduction of magnetite (Fe3O4+4 H2→3 Fe+4 H2O) and the oxidization of metallic iron (3 Fe+4 H2O→Fe3O4+4 H2). Herein, we prepared three montmorillonite (MMT)‐supported iron oxide samples by using a sol–gel method and demonstrated their application in hydrogen storage through a chemical looping process. The redox performance of the Fe‐MMT samples was studied at 600 °C in a fixed‐bed reactor. The results showed that 70 Fe‐MMT (with 70 wt % Fe2O3) exhibited relatively good redox performance owing to its excellent anti‐agglomeration ability and sintering resistance. After the redox performance tests, Fe2SiO4 was observed in all Fe‐MMT samples. It was worth noting that the diffraction intensity of Fe2SiO4 in 70 Fe‐MMT was much weaker than in 30 Fe‐MMT (30 wt % Fe2O3) and 50 Fe‐MMT (50 wt % Fe2O3), which was owed to the high MMT content in the 30 Fe‐MMT and 50 Fe‐MMT samples. The formation of Fe2SiO4 in repeated redox cycles could reduce the stability and recyclability of Fe‐MMT samples. This might be the major reason for the better hydrogen storage performance of 70 Fe‐MMT compared with 30 Fe‐MMT and 50 Fe‐MMT.

show abstract

Section: Introductionmentioning

confidence: 99%

Montmorillonite‐Supported Iron Oxide for Hydrogen Storage by Chemical Looping

Xiao

Zhang

2017

Energy Tech

View full text Add to dashboard Cite

show abstract

“…MOF materials have extraordinary permanent porosity [2] and large pore volume [3]. They also have very low density and high surface area [4]. Due to these superior structure-related properties, the materials were widely studied for gases adsorption applications such as methane and hydrogen storage, carbon dioxide capture, gases or molecular separation of fullerenes and as heterogeneous catalysis [5,6].…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis and Characterizations of MOF-5 Coordination Polymer with Various Metal Linker Ratios for Ammonia Gas Storage

Misran¹,

Aminuddin

Zini

et al. 2011

AIP Conference Proceedings

View full text Add to dashboard Cite

Metal-organic framework coordination polymer materials of MOF-5 with Fm3m cubic structure and tetrahedral structure were successfully synthesized at room temperature and pressure using liquid-crystal (i.e. surfactant) templating method and direct mixing method. The crystallinity increased as metal (Zn)/linker (benzenedicarboxylic acid, BDC) ratios were varied from 0.3 to 0.5. However, the cubic structure of evacuated framework was relatively disrupted at metal/linker ratio of 0.7. Direct-mixing synthesis approach resulted in MOF-5 with layered tetragonal structure due to the increased mobility of the organic-linker as the metal/linker ratios were increased. On the other hand, liquid-crystal templating method resulted in MOF-5 with cubic structure with sizes of ca. 3-5 micron. Changing the solvent from dimethylformamide to chloroform during the synthesis affected the size of the single cubic to decrease from 5 micron to 3 micron, respectively. Furthermore, MOF-5 prepared with metal/linker ratio 0.5 and aged in solvents with higher crystallinity exhibited higher ammonia adsorption uptake at ca. 7.2 %.

show abstract

“…(1) The degassing temperature chosen in most of our experiment (120°C) was called by Li et al It should be noted that degassing temperatures used in other studies of MOF-5 prior to hydrogen adsorption measurements are found in a broad range of 80-200°C but the most important is that samples should be kept at vacuum until the weight of the sample stabilizes [9][10][11][12][13][14]. Gravimetric system employed in our experiments (unlike to volumetric system used in experiments by Yang group) allows to control weight change in situ during treatments and to ensure complete degassing.…”

mentioning

confidence: 99%