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Title:
Preparation of -SO3--coated nanopromoters for methane hydrate formation: effects of the existence pattern of -SO3- groups on the promotion efficiency
Author: Wang, Fei; Guo, Gang; Luo, Sheng-Jun; Guo, Rong-Bo
Source: JOURNAL OF MATERIALS CHEMISTRY A
Issued Date: 2017
Volume: 5, Issue:6, Pages:2640-2648
DOI: 10.1039/c6ta08839b
DOC Type: Article
English Abstract: Sodium dodecyl sulfate (SDS) has been confirmed to be the most efficient promoter of gas hydrate formation; however, the foam generation during hydrate dissociation severely limits its application. In this study, the -SO3- group, similar to the hydrophilic group of SDS, was covalently fixed on polystyrene nanoparticles to prepare -SO3- -coated nanopromoters (-SO3-@PSNS) for methane hydrate formation. The existing form of -SO3- groups was controlled by varying the ratio of the hydrophobic and hydrophilic monomers during emulsion polymerization, which produced significant influence on the promotion efficiency. At the initial pressure of 5 MPa, when -SO3- groups existed irregularly with the macromolecules of -SO3- @PSNS in solution (-SO3- @PSNS-1), the growth rate was merely 8.02 +/- 0.95 x 10(-6) mol min(-1) mL(-1); however, when -SO3- groups were uniformly arrayed on the surface of the -SO3- @PSNS nanospheres (-SO3- @PSNS-2-3-4), the growth rate reached 18.08 +/- 3.29-40.97 +/- 2.89 x 10(-6) mol min(-1) mL(-1). When nanopromoters with regularly arrayed -SO(3)(-)groups (-SO3- @PSNS-2-3) were used at the initial pressure of 6 MPa, the entire hydrate formation process was completed within 1-2 h and the methane storage capacity reached 142 and 137 v/v, indicating much better promotion compared to other common promoters, such as SDS, nanofluids, and activated carbon. Moreover, -SO3- @PSNS-3 resulted in no foam generation during hydrate dissociation and produced excellent recycling performance in 8 cycles of methane hydrate formation. Therefore, the -SO3- -coated nanopromoters developed in this study have significant potential in the industrial application of hydrate-based natural gas storage and transportation.
WOS Headings: Science & Technology ; Physical Sciences ; Technology
WOS Subject: Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS Subject Extended: Chemistry ; Energy & Fuels ; Materials Science
WOS Keyword Plus: SODIUM DODECYL-SULFATE ; UNSTIRRED GAS/LIQUID SYSTEM ; ACTIVATED CARBON ; GAS HYDRATE ; SURFACTANTS ; DISSOCIATION ; KINETICS ; STORAGE ; WATER
Indexed Type: SCI
Funder: Key Projects in the National Science and Technology Pillar Program(20140015) ; Qingdao Science and Technology and People's Livelihood Project(14-2-3-69-nsh)
Language: 英语
WOS ID: WOS:000395075600027
Citation statistics:
Content Type: 期刊论文
URI: http://ir.qibebt.ac.cn/handle/337004/9327
Appears in Collections:工业生物燃气团队_期刊论文

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description.institution: Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Key Lab Biofuels, Shandong Ind Engn Lab Biogas Prod & Utilizat, Qingdao 266101, Shandong, Peoples R China

Recommended Citation:
Wang, Fei,Guo, Gang,Luo, Sheng-Jun,et al. Preparation of -SO3--coated nanopromoters for methane hydrate formation: effects of the existence pattern of -SO3- groups on the promotion efficiency[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(6):2640-2648.
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