Synthesis, characterization and hydrogen adsorption properties of metal–organic framework Al-TCBPB

Saha, Dipendu; Zacharia, Renju; Lafi, Lyubov; Cossement, Daniel; Chahine, Richard

doi:10.1016/j.ijhydene.2011.12.072

Cited by 15 publications

(6 citation statements)

References 32 publications

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“…Metal organic frameworks (MOFs) are of considerable scientific and technological interest due to their tunable porosity, high surface area, and the large number of available structures. [1][2][3] Metal ions coordinated with a wide variety of polytopic linkers (bridging ligands) form a crystalline nanoporous structure which provides advantages for applications including gas storage, [4][5][6][7][8][9][10] gas separation, [11][12][13][14][15][16][17][18][19][20] catalysis, 21,22 sensing, [23][24][25] and more recently pharmaceuticals. 26,27 The MOF-74 series, also known as CPO-27, (CPO = coordination polymer of Oslo) has high adsorption properties for carbon dioxide, 12,[15][16][17]28 noble gases, 18,19 toxic gases, 11,13 methane 29 and water.…”

Section: Introductionmentioning

confidence: 99%

Gas–liquid segmented flow microwave-assisted synthesis of MOF-74(Ni) under moderate pressures

et al. 2015

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The metal organic framework, MOF-74ĲNi), was synthesized in a continuous flow microwave-assisted reactor obtaining a high space-time yield (~90 g h −1 L −1 ) and 96.5% conversion of reagents. Separation of the nucleation and growth steps was performed by using uniform and rapid microwave heating to induce nucleation, which allowed a substantial increase in conversion for shorter reaction times under mild pressure. High yields were achieved in minutes, as opposed to days for typical batch syntheses, with excellent control over the material's properties due to more uniform nucleation, and the separation of the nucleation and growth steps. Optimization of the microwave reactor parameters led to improvements in crystallinity, reagent conversion, and production rates. Differences in MOF-74(Ni) crystallinity were observed as smaller grains were formed when higher microwave zone temperatures were used. Crystallinity differences led to different final adsorption properties and surface areas. Herein we show that a continuous high space-time yield synthesis of MOF-74(Ni) allows control over nucleation using microwave heating.

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Section: Introductionmentioning

confidence: 99%

Gas–liquid segmented flow microwave-assisted synthesis of MOF-74(Ni) under moderate pressures

et al. 2015

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“…150−153 (iii) Mild synthesis condition: MOF can be synthesized in milder conditions as compared to its other counterparts, like zeolites or carbons. 154,155 (iv) Postsynthesis modification: MOFs can be altered both in the organic linkers and in the metal centers after the synthesis for a specific functionality. 156−159 In terms of methane purification from CO 2 or N 2 , six distinct phenomena can be observed: (i) size exclusion effect, (ii) kinetic sieving effect, (iii) higher quadruple moment of CO 2 , resulting in its preferential adsorption and equilibrium separation, (iv) electronic interactions between CO 2 or CH 4 with open metal cations, resulting in separation of methane from CO 2 or N 2 , (v) direct chemical interactions with the additional functionalities with the CO 2 (for example, with amine grating) that facilitate its preferential separation from CH 4 , and (vi) structural shift or breathing effect, leading to preferential adsorption of specific components.…”

Section: Chemical Reviewsmentioning

confidence: 99%

“…(ii) Flexibility in design: Different varieties of MOF structures can be created just by altering the length of organic linkers or the metal centers, giving rise to a series of MOFs. This phenomenon has clearly been demonstrated in isoreticular MOFs (IRMOFs). − (iii) Mild synthesis condition: MOF can be synthesized in milder conditions as compared to its other counterparts, like zeolites or carbons. , (iv) Postsynthesis modification: MOFs can be altered both in the organic linkers and in the metal centers after the synthesis for a specific functionality. − …”

Section: Processes Employed For Natural Gas (Methane) Separation and ...mentioning

confidence: 99%

Postextraction Separation, On-Board Storage, and Catalytic Conversion of Methane in Natural Gas: A Review

Grappe²,

et al. 2016

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In today's perspective, natural gas has gained considerable attention, due to its low emission, indigenous availability, and improvement in the extraction technology. Upon extraction, it undergoes several purification protocols including dehydration, sweetening, and inert rejection. Although purification is a commercially established technology, several drawbacks of the current process provide an essential impetus for developing newer separation protocols, most importantly, adsorption and membrane separation. This Review summarizes the needs of natural gas separation, gives an overview of the current technology, and provides a detailed discussion of the progress in research on separation and purification of natural gas including the benefits and drawbacks of each of the processes. The transportation sector is another growing sector of natural gas utilization, and it requires an efficient and safe on-board storage system. Compressed natural gas (CNG) and liquefied natural gas (LNG) are the most common forms in which natural gas can be stored. Adsorbed natural gas (ANG) is an alternate storage system of natural gas, which is advantageous as compared to CNG and LNG in terms of safety and also in terms of temperature and pressure requirements. This Review provides a detailed discussion on ANG along with computation predictions. The catalytic conversion of methane to different useful chemicals including syngas, methanol, formaldehyde, dimethyl ether, heavier hydrocarbons, aromatics, and hydrogen is also reviewed. Finally, direct utilization of methane onto fuel cells is also discussed.

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“…However, none of them has been able to achieve the performance required for on-board vehicle application, typically providing 5-6 wt.% excess hydrogen capacity at 77K and 20-50 bar. Coordination polymers or metal-organic frameworks (MOFs) have been identified as promising adsorbents for gas and H 2 storage where viable volumetric densities can still be achieved in highly porous structures [20][21][22][23][24][25]. In this sense, benzene polycarboxylates are a very common group of organic ligands used for synthesis of different MOFs, due to their ability to build high dimensional coordination polymers [26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer

Blagojević

Lukic

Begović

et al. 2016

International Journal of Hydrogen Energy

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Ni 2 (btc)(en) 2 ] n coordination polymer exhibits a layered two-dimensional structure with weak interaction between the layers. Correlation of experimental measurements and DFT calculations and molecular simulations demonstrated that its structural features, primarily the inherent flexibility of the layered polymeric structure, lead to improved hydrogen storage performance at room temperature, due to significant enhancement in isosteric heats of hydrogen adsorption. Volumetric measurements of hydrogen adsorption at room temperature show up to 0.3 wt.% hydrogen absorbed at 303K and 2.63 bar of hydrogen pressure, with isosteric heats of adsorption of about 12.5 kJ mol −1 . Predicted performance at room temperature is 1.8 wt.% at 48 bar and 3.5 wt.% at 100 bar, better than both MOF-5 and NU-100, with calculated values of isosteric heats for adsorption of hydrogen are in 8-13 kJ mol −1 range at both 77K and 303K. Grand canonical Monte Carlo calculations show that this material, at 77K, exhibits gravimetric hydrogen densities of more than 10 wt.% (up to 8.3 wt.% excess) with the corresponding volumetric density of at least 66 gL −1 , which is comparable to MOF-5, but achieved with considerably smaller surface area of about 2500 m 2 g −1 . This study shows that layered two-dimensional MOFs could be a step towards MOF systems with significantly higher isosteric heats of adsorption, which could provide better room temperature hydrogen storage capabilities. *

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Synthesis, characterization and hydrogen adsorption properties of metal–organic framework Al-TCBPB

Cited by 15 publications

References 32 publications

Gas–liquid segmented flow microwave-assisted synthesis of MOF-74(Ni) under moderate pressures

Gas–liquid segmented flow microwave-assisted synthesis of MOF-74(Ni) under moderate pressures

Postextraction Separation, On-Board Storage, and Catalytic Conversion of Methane in Natural Gas: A Review

Hydrogen storage in a layered flexible [Ni2(btc)(en)2]n coordination polymer

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