Preparation of perfluorosulfonic acid-polyethersulfone-nanoparticles composite nanofibers and their catalytic properties

doi:10.3969/j.issn.0438-1157.2013.04.047

CIESC Journal ›› 2013, Vol. 64 ›› Issue (4): 1466-1472.DOI: 10.3969/j.issn.0438-1157.2013.04.047

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Preparation of perfluorosulfonic acid-polyethersulfone-nanoparticles composite nanofibers and their catalytic properties

LU Peipei, XU Zhenliang, YANG Hu, MA Xiaohua, WEI Yongming

State Key Laboratory of Chemical Engineering, Membrane Science and Engineering R&D Lab, Chemical Engineering Research Center, East China University of Science and Technology, Shanghai 200237, China

Received:2012-07-10 Revised:2012-09-05 Online:2013-04-05 Published:2013-04-05
Supported by:
supported by the National Natural Science Foundation of China(21176067,212276075) and the Fundamental Research Funds for the Central Universities(WA1214062).

PFSA-PES-纳米颗粒复合纳米纤维的制备及催化性能

陆培培, 许振良, 杨虎, 马晓华, 魏永明

华东理工大学化学工程联合国家重点实验室,化学工程研究所膜科学与工程研发中心,上海200237

通讯作者: 许振良
作者简介:陆培培(1986—),男,博士研究生。
基金资助:
国家自然科学基金项目(21176067,212276075);广东省重大科技专项(2011A080403004);上海市科技攻关计划项目(11DZ1205201);中央高校基本业务探索基金项目(WA1214062)。

Abstract

Abstract: Nanofibers of perfluorosulfonic acid (PFSA),polyethersulfone (PES) and nanoparticles (SiO₂,TiO₂ and Al₂O₃) were prepared by electrospinning method from PFSA-PES-nanoparticle suspensions.The effects of nanoparticles on morphology and surface acid groups of thenanofibers were investigated.The composite nanofibers were tested in esterification of acetic acid (HAc) and ethanol (EtOH) to investigate the relationship between structures and catalytic performance.The results showed that the specific surface area of obtained nanofibers was 85.6 m²穏^-1.Nanoparticles were well distributed on the surface of the nanofibers and provided enough surface area for the reactants.The number of surface acidic centers on the surface was 71.2% of total PFSA acidic groups.Besides,the nanofibers exhibited good catalytic performance in the reactions due to improvement of activity by the nanoparticles.Moreover,these fibers could be well recovered and regenerated,and could be used as an environmental-friendly solid acid catalyst.

Key words: perfluorosulfonic acid, nanofiber, electrospinning, nanoparticle

摘要： 利用静电纺丝法制备了全氟磺酸(PFSA)-聚醚砜(PES)-纳米颗粒(SiO₂、TiO₂和Al₂O₃)复合纳米纤维,比较了SiO₂、TiO₂和Al₂O₃等不同纳米颗粒对磺酸基团在纤维表面分布的影响,并利用乙酸乙酯合成反应考察了纤维结构对表面磺酸基团活性的关系。结果表明:静电纺复合纳米纤维的比表面积可达85.6 m²·g^-1,纳米颗粒均匀分布在纤维表面,表面酸性中心占PFSA酸性基团总量最高达71.2%。酯化反应实验表明,复合纳米纤维具有很好的催化性能,纳米颗粒的存在可以提高酸中心的活性;同时,所得复合纳米纤维膜表现出很好的回收与可再生性能,有望作为一种对环境友好的固体酸催化剂。

关键词: 全氟磺酸, 纳米纤维, 静电纺丝, 纳米颗粒

CLC Number:

TQ31

LU Peipei, XU Zhenliang, YANG Hu, MA Xiaohua, WEI Yongming. Preparation of perfluorosulfonic acid-polyethersulfone-nanoparticles composite nanofibers and their catalytic properties[J]. CIESC Journal, 2013, 64(4): 1466-1472.

陆培培, 许振良, 杨虎, 马晓华, 魏永明. PFSA-PES-纳米颗粒复合纳米纤维的制备及催化性能[J]. 化工学报, 2013, 64(4): 1466-1472.

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Preparation of perfluorosulfonic acid-polyethersulfone-nanoparticles composite nanofibers and their catalytic properties

PFSA-PES-纳米颗粒复合纳米纤维的制备及催化性能

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