Methane Hydrate Formation Promoted by −SO<sub>3</sub><sup>–</sup>-coated Graphene Oxide Nanosheets

Wang, Fei; Meng, Han-Lin; Guo, Gang; Luo, Sanzhong; Guo, Rongbo

doi:10.1021/acssuschemeng.7b00846

Cited by 56 publications

(63 citation statements)

References 30 publications

(52 reference statements)

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“…These enhancements might be attributable to the increase in initial dissolved gas in nanofluid, heterogeneous nucleation, and the heat transfer coefficient. Wang et al (2017) used graphene nanofluid to promote methane hydrate formation at initial conditions of 6 MPa and 277.15 K with 300 rpm stirring and found that graphene (0.25-0.75 g L −1 ) reduced the hydrate formation period by 45-80% and improved the hydrate formation rate and the storage capacity by 190-660% and 45-70%, respectively, compared with pure water. The results implied that the graphene nanosheets not only increased heterogeneous nucleation in the system and provided abundant active sites for hydrate nucleation but also produced a high transfer efficiency that could remove the heat generated by hydrate formation from the system, consequently improving the efficiency of methane hydrate formation.…”

Section: Graphenementioning

confidence: 99%

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Graphene-Based Kinetic Promotion of Gas Hydrate Formation

2020

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Gas hydrate technology holds great potential in energy and environmental fields, and achieving efficient gas hydrate formation is critical for its industrial application. Graphene is a novel carbon-based nanostructured material with excellent thermal conductivity and a large specific surface area. Therefore, the use of graphene-based materials for the promotion of gas hydrate formation might be feasible and has aroused a lot of interests. Accordingly, to evaluate the current research on graphene-based promotion of gas hydrate formation, this work presents a review of existing studies involving graphene-based promoters of gas hydrate formation. Here, the studies applying various types of graphene-based promoters for gas hydrate formation are listed and detailed, the peculiar properties of graphene-based promoters are discussed, and the promotion mechanisms are analyzed. Through this review, comprehensive insight into graphene-based promotion of gas hydrate formation can be obtained, which can guide the design and applications of novel graphene-based promoters and might contribute to achieving efficient gas hydrate formation.

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Section: Graphenementioning

confidence: 99%

“…As a novel carbon nanostructure, graphene presents excellent mechanical strength and thermal conductivity and large specific surface area, making it a promising candidate for the promotion of gas hydrate formation (Wang et al, 2017). Here, we implement a review focusing on graphene-based promoters of gas hydrate formation.…”

Section: Introductionmentioning

confidence: 99%

Graphene-Based Kinetic Promotion of Gas Hydrate Formation

2020

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“…Since graphene has smooth surfaces and is easy to functionalize by sulfonate groups or to load with metal nanoparticles, this two-dimensional carbon material is also introduced to hydrate formation reactions. Wang et al (2017) grafted sulfonate groups successfully to graphene by covalent bonding and used it in methane hydrate formation. The results showed that the promotion efficiency of SGO (sulfated graphene) was better than that of GO (oxidized graphene).…”

Section: Gas Hydrate Formation With Carbon-based Nanofluidmentioning

confidence: 99%

“…Another review conducted by Nashed et al (2018) shed light on the nanomaterials for gas hydrate formation, where various metal-based particles, like nano-Ag, Cu, CuO, and ZnO were discussed, and it was concluded that nanoparticles not only could help to promote mass transfer but they could also contribute to heat transfer enhancement in the hydrate reaction. Additionally, some non-metal materials such as silica nanoparticles (Wang et al, 2019), graphene (Wang et al, 2017), and carbon nanotubes (Pasieka et al, 2014) exhibited excellent performance in promoting gas storage capacities and hydrate formation rate.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Clathrate Hydrate Formation Kinetics Using Carbon-Based Material Promotion

et al. 2020

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Although hydrate-based technology has been considered as a safe and environmentally friendly approach for gas storage and transportation in recent decades, there are still inherent problems during hydrate production, such as a long induction time, slow formation kinetics, and limited hydrate storage capacity. Attempts to resolve these issues have resulted in the development of various kinetics promoters, among which carbon-based materials have become one of the most attractive owing to their unique promotion effect. Herein, results on promotion by bulk wetted carbon materials in the forms of a packed bed, carbon particles in a suspension, and nano-carbon materials in a nanofluid are collected from the published literature. Meanwhile, the promotion mechanisms and influencing factors of the carbon-based promoters are discussed. The purpose of this mini-review is to summarize recent advances and highlight the prospects and future challenges for the use of carbon-based materials in hydrate production.

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“…In addition to surfactants, other substances, such as graphene and its derivatives [48][49][50] , nanoparticles (iron(II,III) oxide (Fe3O4) [36; 51] and cupric oxide (CuO) [35] ) with a surfactant to suspend in water, have also been investigated.…”

Section: Additivesmentioning

confidence: 99%

UQ eSpace

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Natural gas gradually becomes one of the major energy resources in the world. Due to the growing demand for energy consumption and increasing environmental concern, natural gas has an optimistic future market especially compared with other fossil fuels. The issue for utilizing natural gas broadly is that the difficulties exist in transport and storage since the proven natural gas reserves are dispersedly distributed over the world. High-cost and high-risk gaseous or liquified natural gas transport and storage limited the global application of natural gas. In this project, the liquid hydrocarbon, cyclopentane, was selected for the hydrate formation and dissociation experiment since its hydrate structure is the same as natural hydrate structure but can be easily formed under near ambient conditions. Three types of salt solutions, sodium chloride (NaCl), calcium chloride (CaCl2), and aluminium chloride (AlCl3) solutions in different molality concentrations were prepared. The formation experiment was conducted by cooling down the mixture of cyclopentane and salt solution in a cryostat at atmospheric pressure. Temperature probes were placed in the solution phase. The dissociation experiment started when sufficient hydrates formed. A quick dissociation method was applied to the cyclopentane phase equilibrium temperature measurement. The experimental phenomena and equilibrium temperature were observed visually. The phase equilibrium temperature data for cyclopentane hydrates were measured from the experiment. The collected data were progressed and plotted over the concentrations (mass fraction, molality, effective mole fraction, and ionic strength). Possible relationships were proposed and analysed. In addition, some preliminary experiments had been conducted to obtain supporting information and data. Hydrate formation rate was improved by increasing subcooling and introducing agitation. In this thesis, the phenomena of cyclopentane hydrate formation and dissociation had also been observed visually during the experiments. The equilibrium temperatures gathered from this thesis can be applied for further studies. A slower dissociation method can be used to obtain the equilibrium data with high accuracy. Furthermore, the reliable data may be applied for relationship studies on cyclopentane hydrate nucleation rate and effective mole fraction in electrolytes under the same subcooling level.

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Methane Hydrate Formation Promoted by −SO₃^–-coated Graphene Oxide Nanosheets

Cited by 56 publications

References 30 publications

Graphene-Based Kinetic Promotion of Gas Hydrate Formation

Graphene-Based Kinetic Promotion of Gas Hydrate Formation

Enhancement of Clathrate Hydrate Formation Kinetics Using Carbon-Based Material Promotion

UQ eSpace

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Methane Hydrate Formation Promoted by −SO3–-coated Graphene Oxide Nanosheets

Cited by 56 publications

References 30 publications

Graphene-Based Kinetic Promotion of Gas Hydrate Formation

Graphene-Based Kinetic Promotion of Gas Hydrate Formation

Enhancement of Clathrate Hydrate Formation Kinetics Using Carbon-Based Material Promotion

UQ eSpace

Contact Info

Product

Resources

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Methane Hydrate Formation Promoted by −SO₃^–-coated Graphene Oxide Nanosheets