Fast and low-temperature elimination of organic templates from SBA-15 using dielectric barrier discharge plasma

Lin WANG (王林); Junkang YAO (姚军康); Zheng WANG (王政); Hongqiao JIAO (焦洪桥); Jing QI (齐静); Xiaojing YONG (雍晓静); Dianhua LIU (刘殿华)

doi:10.1088/2058-6272/aad547

Plasma Science and Technology > 2018 > 20(10): 101001. > DOI: 10.1088/2058-6272/aad547

Lin WANG (王林), Junkang YAO (姚军康), Zheng WANG (王政), Hongqiao JIAO (焦洪桥), Jing QI (齐静), Xiaojing YONG (雍晓静), Dianhua LIU (刘殿华). Fast and low-temperature elimination of organic templates from SBA-15 using dielectric barrier discharge plasma[J]. Plasma Science and Technology, 2018, 20(10): 101001. DOI: 10.1088/2058-6272/aad547

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Fast and low-temperature elimination of organic templates from SBA-15 using dielectric barrier discharge plasma

¹ State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People’s Republic of China
² State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People’s Republic of China
³ Coal to Liquids Chemical Research and Development Center, Shenhua Ningxia Coal Industry Group, Yinchuan 750411, People’s Republic of China

Funds: The project was financially supported by National Natural Science Foundation of China (Nos. 21766026 and 21366026), the Leading Talent Project of Ningxia (No. KJT2016001), the National International Cooperation S & T Project of China (No. 2015DFA40660), the National First- Rate Discipline Construction Project of Ningxia (Chemical Engineering and Technology), and the National Demonstra- tion Center for Experimental Chemistry Education (Ningxia University).

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Received Date: March 22, 2018

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Abstract

Abstract

Organic templates P-123 of mesoporous SBA-15 can be effectively removed in a few minutes (4min) by using the dielectric-barrier discharge (DBD) plasma technique at ambient pressure and low gas temperature (around 130°C). The mesoporous SBA-15 was characterized by FT-IR, ²⁹ Si solid sate NMR, TEM, XRD, TGA and N₂ adsorption/desorption isotherms. The as-made SBA-15 treated with DBD plasma exhibited a larger surface area of 790 m²·g ⁻¹ with larger pores and microspore volume than samples prepared by using the conventional thermal calcination method (550 °C and 5h, 660 m ²·g ⁻¹ ). In addition to less shrinkage of the silica framework, the DBD-prepared SBA-15 showed significantly increased weight loss of 8.3% about 200 °C as compared with that of conventional calcination (5.5%), which is attributed mainly to the dehydroxylation by condensation of silanol groups.
- DBD plasma,
- SBA-15,
- elimination of organic template,
- mesoporous materials

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References (23)

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