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首页> 外文期刊>Journal of Applied Polymer Science >Development of stable and active PVA-PSSA/SA-PVA catalytic composite membrane for esterification enhancement
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Development of stable and active PVA-PSSA/SA-PVA catalytic composite membrane for esterification enhancement

机译：用于酯化增强的稳定和活性PVA-PSSA / SA-PVA催化复合膜的研制

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摘要

An active and stable catalytic composite membrane (CCM), poly(vinyl alcohol)-poly(styrene sulfonic acid)/sodium alginate-poly(vinyl alcohol) (PVA-PSSA/SA-PVA), was prepared to enhance the esterification of ethanol and propionic acid. The morphologies and crystal structures of the CCMs were investigated by Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction. The effects of catalytic layer thickness, mass ratio of PVA to PSSA, concentration of catalytic layer solution, ratio of reaction volume to membrane area, and molar ratio of propionic acid to ethanol were discussed. The pervaporation results showed that the flux of CCM increased from 118 to 320g m(-2) h(-1) compared with the SA-PVA membrane because of the close affinity and low resistance of PSSA to water. After crosslinking with 3-aminopropylmethyldiethoxysilane, the CCMs had good catalytic activities. The acid conversion reached 92.8% at 75 degrees C in 12h, and the stabilization of the CCM was greatly improved. (c) 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46514.
机译：活性和稳定的催化复合膜（CCM），聚（乙烯醇） - 聚（苯乙烯磺酸）/藻酸钠 - 聚（乙烯醇）（PVA-PSSA / SA-PVA），制备以提高乙醇的酯化和丙酸。的CCM的形态和晶体结构经傅立叶变换红外光谱，扫描电子显微镜和X射线衍射。讨论了催化剂层的厚度，与PSSA PVA的质量比，催化剂层溶液的浓度，以膜面积反应体积的比率，和丙酸到乙醇的摩尔比的影响。渗透蒸发结果表明，CCM的通量从118增加至320克米（-2）H（-1），因为紧密亲和力和PSSA的低电阻，以水的SA-PVA膜比较。与3-乙氧基硅烷交联后，国家协调委员会具有良好的催化活性。酸转化在12小时75℃下达到92.8％，而CCM的稳定大幅提高。 （c）2018 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2018年，135，46514。

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  • 来源
    《Journal of Applied Polymer Science》 |2018年第30期|共9页
  • 作者

    Han Shang; Li Yuewen; Bai Shutong; Zhang Li; Li Weixing; Xing Weihong;

  • 作者单位

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

    Nanjing Tech Univ Coll Chem &

    Chem Engn State Key Lab Mat Oriented Chem Engn Nanjing 210000 Jiangsu Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 高分子化合物工业（高聚物工业）;
  • 关键词

    catalysts; crosslinking; membranes; separation techniques;

    机译：催化剂;交联;膜;分离技术;

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