Hydrogen storage in clathrate hydrates: Current state of the art and future directions

Veluswamy, Hari Prakash; Kumar, Rajnish; Linga, Praveen

doi:10.1016/j.apenergy.2014.01.063

Cited by 370 publications

(201 citation statements)

References 165 publications

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“…2. Each Pd species displayed two peaks due to the Pd 3d 5 In order to get insights on the effect of thermal treatment, fresh Pd/C catalyst was calcined at 200 and 250 °C in flowing air for 3 h. This range of temperature is selected to study the impact of heat treatment on the (i) catalytic activity, (ii) oxidation state and particle size of Pd and (iii) maintaining the thermal stability of the activated carbon support. XRD patterns are shown in Fig.…”

Section: Catalyst Characterisationmentioning

confidence: 99%

“…physisorbed or chemically incorporated in the structure. In the former method, hydrogen is adsorbed into a porous network such as zeolites [3], MOFs [4], clathrate hydrates [5], various carbon materials [3] and conventional organic polymers [6]. In the latter, a hydrogen-rich material is subjected to a decomposition process, which can be potentially reversible.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen Generation from Additive-Free Formic Acid Decomposition Under Mild Conditions by Pd/C: Experimental and DFT Studies

et al. 2018

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Safe and efficient hydrogen generation and storage has received much attention in recent years. Herein, a commercial 5 wt% Pd/C catalyst has been investigated for the catalytic, additive-free decomposition of formic acid at mild conditions, and the experimental parameters affecting the process systematically have been investigated and optimised. The 5 wt% Pd/C catalyst exhibited a remarkable 99.9% H 2 selectivity and a high catalytic activity (TOF = 1136 h −1 ) at 30 °C toward the selective dehydrogenation of formic acid to H 2 and CO 2 . The present commercial catalyst demonstrates to be a promising candidate for the efficient in-situ hydrogen generation at mild conditions possibiliting practical applications of formic acid systems on fuel cells. Finally DFT studies have been carried out to provide insights into the reactivity and decomposition of formic acid along with the two-reaction pathways on the Pd (111) surface.

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Section: Catalyst Characterisationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrogen Generation from Additive-Free Formic Acid Decomposition Under Mild Conditions by Pd/C: Experimental and DFT Studies

et al. 2018

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“…NGH can be stable over a wide range of pressures and temperatures. Three main structures of gas hydrates-cubic structure I (sI), cubic structure II (sII) and the hexagonal structure (sH) have been identified (Davidson et al, 1973;Englezos et al, 1993;Sloan et al, 2008;Veluswamy et al, 2014). The properties of ice, structures I and II gas hydrates is showed in Table 1 (Aregba et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Review of exploration and production technology of natural gas hydrate

Cui

Lü

et al. 2018

Adv. Geo-Energy Res.

108

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Abstract:Natural gas hydrate is an ice-like substance which is sometimes called "combustible ice" since it can literally be lighted on fire and burned as fuel. Natural gas hydrate is characterized by widespread distribution, large reserves and little pollution. This paper introduced the distributions of hydrate, hydrate reserves and properties of hydrate. The main exploration methods, such as geophysical exploration and geochemical exploration have been presented. In addition, the main production techniques of natural gas hydrate including depressurization, thermal stimulation and chemical injection have been summed up. Finally, the challenges and outlooks of natural gas hydrate production have been proposed.

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“…H 2 is the fuel of choice for many types of fuel cells under development for propulsion and power generation applications [14,15]. Employing hydrogen hydrate as an energy carrier has attracted interest [3][4][5], primarily since oxidation of H 2 produces no greenhouse gas carbon emissions (although H 2 produced by reforming or pyrolysis of hydrocarbon fuels does have an associated carbon footprint).…”

Section: Introductionmentioning

confidence: 99%

“…Pure H 2 hydrate requires very high pressures, which makes them impractical under most storage scenarios [1][2][3]. In order to reduce the prohibitively high pressure requirement, H 2 mixed gas hydrates have been investigated [1][2][3][4][5]. Hashimoto et al [6] demonstrated that adding small amounts of tetra-n-butylammonium bromide (TBAB; C 16 H 36 NBr) to water reduced the hydrogen hydrate formation pressure from 350 MPa to~1 MPa at 280 K. TBAB is a salt that forms a semi-clathrate hydrate crystal (C 16 H 36 N + ·Br − ·38H 2 O) at atmospheric pressure and near room temperature with a unit-cell composed of 16 small (S)-cages and eight large (L)-cages.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen Storage Capacity of Tetrahydrofuran and Tetra-N-Butylammonium Bromide Hydrates Under Favorable Thermodynamic Conditions

Weissman¹,

Masutani

2017

Energies

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An experimental study was conducted to evaluate the feasibility of employing binary hydrates as a medium for H 2 storage. Two reagents, tetrahydrofuran (THF) and tetra-n-butylammonium bromide (TBAB), which had been reported previously to have potential to form binary hydrates with H 2 under favorable conditions (i.e., low pressures and high temperatures), were investigated using differential scanning calorimetry and Raman spectroscopy. A scale-up facility was employed to quantify the hydrogen storage capacity of THF binary hydrate. Gas chromatography (GC) and pressure drop analyses indicated that the weight percentages of H 2 in hydrate were less than 0.1%. The major conclusions of this investigation were: (1) H 2 can be stored in binary hydrates at relatively modest pressures and temperatures which are probably feasible for transportation applications; and (2) the storage capacity of H 2 in binary hydrate formed from aqueous solutions of THF over a concentration range extending from 2.78 to 8.34 mol % and at temperatures above 263 K and pressures below 11 MPa was <0.1 wt %.

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Hydrogen storage in clathrate hydrates: Current state of the art and future directions

Cited by 370 publications

References 165 publications

Hydrogen Generation from Additive-Free Formic Acid Decomposition Under Mild Conditions by Pd/C: Experimental and DFT Studies

Hydrogen Generation from Additive-Free Formic Acid Decomposition Under Mild Conditions by Pd/C: Experimental and DFT Studies

Review of exploration and production technology of natural gas hydrate

Hydrogen Storage Capacity of Tetrahydrofuran and Tetra-N-Butylammonium Bromide Hydrates Under Favorable Thermodynamic Conditions

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