Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter
Despite hydrate technology provides an economical and safe method to transport and store natural gas, the large-scale utilization is still restricted by the long hydrate formation process and low gas storage capacity. To address above problems, a novel nanopromoter was synthesized by electrostatic a...
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ftrepec:oai:RePEc:eee:appene:v:224:y:2018:i:c:p:175-183 2024-04-14T08:14:52+00:00 Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter Song, Yuan-Mei Wang, Fei Guo, Gang Luo, Sheng-Jun Guo, Rong-Bo http://www.sciencedirect.com/science/article/pii/S0306261918306305 unknown http://www.sciencedirect.com/science/article/pii/S0306261918306305 article ftrepec 2024-03-19T10:29:18Z Despite hydrate technology provides an economical and safe method to transport and store natural gas, the large-scale utilization is still restricted by the long hydrate formation process and low gas storage capacity. To address above problems, a novel nanopromoter was synthesized by electrostatic adsorption and in-situ reduction of silver or copper ions on the supports of oxidized carbon nanotubes (symbolized as metal@OCNTs). In the methane hydrate formation, with nanoparticles fraction varied from 0 to 100%, the methane consumption was improved from 44 mmol/.mol water to 150 mmol.mol/water, among which Ag-grafted nanotubes performed better in accelerating hydrate formation. The increasing concentration of the nanopromoters led to reduced formation period to 125.1 min in 40 ppm Ag@OCNTs and 141.8 min in 40 ppm Cu@OCNTs. The optimum gas storage capacity was 153 V/V in 10 ppm Ag@OCNTs and 148.3 V/V in 20 ppm Cu@OCNTs. Moreover, the high methane recovery of 78.94% without foam generation was achieved during hydrate dissociation in the metals-grafted carbon nanotubes nanofluids. Hence, the metal nanoparticles-grafted CNTs could facilitate both high storage capacity in the rapid hydrate formation and high methane recovery, which is of great significance to the application of hydrate-based technologies in efficient energy storage and utilization. Methane hydrates; Metals grafted-carbon nanotubes; Formation enhancement; Gas storage capacity; Methane recovery; Article in Journal/Newspaper Methane hydrate RePEc (Research Papers in Economics) |
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Despite hydrate technology provides an economical and safe method to transport and store natural gas, the large-scale utilization is still restricted by the long hydrate formation process and low gas storage capacity. To address above problems, a novel nanopromoter was synthesized by electrostatic adsorption and in-situ reduction of silver or copper ions on the supports of oxidized carbon nanotubes (symbolized as metal@OCNTs). In the methane hydrate formation, with nanoparticles fraction varied from 0 to 100%, the methane consumption was improved from 44 mmol/.mol water to 150 mmol.mol/water, among which Ag-grafted nanotubes performed better in accelerating hydrate formation. The increasing concentration of the nanopromoters led to reduced formation period to 125.1 min in 40 ppm Ag@OCNTs and 141.8 min in 40 ppm Cu@OCNTs. The optimum gas storage capacity was 153 V/V in 10 ppm Ag@OCNTs and 148.3 V/V in 20 ppm Cu@OCNTs. Moreover, the high methane recovery of 78.94% without foam generation was achieved during hydrate dissociation in the metals-grafted carbon nanotubes nanofluids. Hence, the metal nanoparticles-grafted CNTs could facilitate both high storage capacity in the rapid hydrate formation and high methane recovery, which is of great significance to the application of hydrate-based technologies in efficient energy storage and utilization. Methane hydrates; Metals grafted-carbon nanotubes; Formation enhancement; Gas storage capacity; Methane recovery; |
format |
Article in Journal/Newspaper |
author |
Song, Yuan-Mei Wang, Fei Guo, Gang Luo, Sheng-Jun Guo, Rong-Bo |
spellingShingle |
Song, Yuan-Mei Wang, Fei Guo, Gang Luo, Sheng-Jun Guo, Rong-Bo Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
author_facet |
Song, Yuan-Mei Wang, Fei Guo, Gang Luo, Sheng-Jun Guo, Rong-Bo |
author_sort |
Song, Yuan-Mei |
title |
Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
title_short |
Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
title_full |
Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
title_fullStr |
Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
title_full_unstemmed |
Energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
title_sort |
energy-efficient storage of methane in the formed hydrates with metal nanoparticles-grafted carbon nanotubes as promoter |
url |
http://www.sciencedirect.com/science/article/pii/S0306261918306305 |
genre |
Methane hydrate |
genre_facet |
Methane hydrate |
op_relation |
http://www.sciencedirect.com/science/article/pii/S0306261918306305 |
_version_ |
1796313121688649728 |