Synthetic natural gas (SNG) liquefaction processes with hydrogen separation

Lin, Wensheng; Xu, Jingxuan; Zhang, Lin; Gu, Anzhong

doi:10.1016/j.ijhydene.2017.04.141

Cited by 27 publications

(13 citation statements)

References 15 publications

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“…In order to avoid these problems and to fulfill the pipeline specifications, it is necessary to separate CO 2 from natural gas. During the liquefaction of natural gas, CO 2 and CO should be removed like other gases such as H 2 and N 2 or it should be converted into methane (CH 4 ) as much as possible to avoid CO 2 freezing .…”

Section: Introductionmentioning

confidence: 99%

Membranes for CO₂ /CH₄ and CO₂/N₂ Gas Separation

et al. 2019

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Membrane technology has emerged as a leading tool worldwide for effective CO 2 separation because of its well-known advantages, including high surface area, compact design, ease of maintenance, environmentally friendly nature, and costeffectiveness. Polymeric and inorganic membranes are generally utilized for the separation of gas mixtures. The mixed-matrix membrane (MMM) utilizes the advantages of both polymeric and inorganic membranes to surpass the trade-off limits. The high permeability and selectivity of MMMs by incorporating different types of fillers exhibit the best performance for CO 2 separation from natural gas and other flue gases. The recent progress made in the field of MMMs having different types of fillers is emphasized. Specifically, CO 2 /CH 4 and CO 2 /N 2 separation from various types of MMMs are comprehensively reviewed that are closely relevant to natural gas purification and compositional flue gas treatment

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Section: Introductionmentioning

confidence: 99%

Membranes for CO₂ /CH₄ and CO₂/N₂ Gas Separation

et al. 2019

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“…[1][2] The commonly available industrial liquefaction approach relies on high-pressure and/or low-temperature tank for ease of storage and transportation that requires harsh operating process and large energy input (Figure 1a). [3][4] To date, another successful application in industrial-scale methane liquefaction is to produce liquid hydrocarbons based on well-known two-step transformation involving the water-gas shift and the Fischer-Tropsch (F-T) processes (Figure 1b). [5][6][7] In the view of economical cost, directly converting methane as building block feedstock into valueadded liquid chemicals has received considerable attention for on-site transformation of methane of remote oil-rig.…”

Section: Main Textmentioning

confidence: 99%

METHANE LIQUEFACTION: Selective Conversion of Methane to Cyclohexane via Efficient Surface-Hydrogen-Transfer Catalyzed by GaN-Supported Platinum Clusters

Tan

Han

et al. 2021

Preprint

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Non-oxidative liquefaction of methane at room temperature and ambient pressure has long been a scientific “holy grail” of chemical research. In this report, we exploit an unprecedented catalytic transformation of methane exclusively to cyclohexane through effective surface-hydrogen-transfer (SHT) at the heterojunctions boundary consisting of electron-rich platinum cluster (Pt) loaded on methane-activating gallium nitride (GaN) host. The experimental analysis demonstrates that interface-induced overall reaction starts with methane aromatization to benzene initiated by the Ga-N pairs, followed by hydrogenation of benzene to cyclohexane via hydrogen transfer. The in-situ activated hydrogen at electron-rich metal Pt cluster plays a key role for the hydrogenation and enables an outstanding selectivity (as high as 89 %) towards cyclohexane, which is well-delivered even after 5 recycling runs.

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“…The cryogenic distillation process for the separation and purification of H2 has not been evaluated much mainly because of very lowtemperature operation due to the presence of H2 with the boiling point of -251℃ at 1 atm. Lin et al [6] separated H2 and liquefied synthetic natural gas through the distillation process. The maximum methane purity was reported as 99.99% from atmospheric distillation.…”

Section: Introductionmentioning

confidence: 99%