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首页> 外文期刊>International journal of green energy >Study on a Microreaction Process for Synthesis of Polyaniline
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Study on a Microreaction Process for Synthesis of Polyaniline

机译：微反应法合成聚苯胺的研究

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摘要

A catalytic continuous microreaction process for synthesis of polyaniline(PANI) under solar light was investigated. The polymerization of aniline was conducted via a photochemical method. The photopolymerization method yields a polymeric material that has been characterized by Fourier-transform infrared spectroscopy analysis and by scanning electron microscopy. It is shown that the functional groups and surface morphology are affected by solar incident energy where the PANI main vibrational bands become wider, resulting in higher concentration of rings. Results showed that solar intensity enhanced the average yield by 5% over that of indirect solar, while the average time of polymerization is reduced by 17%. The polymerization time was reduced by 20-27% while the temperature was increased from 5 degrees C to 25 degrees C under indirect solar and direct solar, respectively. The yield of PANI is reduced from 94.0% to 84.2% as liquid hour space velocity (LHSV) is increased from 0.145 to 0.385min(-1). An optimum molar ratio of about1.25 is found to give the maximum yield of PANI. Kinetic analysis revealed that a pseudo-first-order Langmuir-Hinshelwood model is well expressing the oxidation rate of aniline over TiO2. The values of the adsorption equilibrium constant and 0.791 (L(-1)g min(-1)), respectively. Comparison between microreactor's performance and performance of batch reactors from published literature was presented. The comparison confirmed the unique characteristics of the microreactor.
机译：研究了在太阳光下合成聚苯胺（PANI）的催化连续微反应过程。苯胺的聚合通过光化学方法进行。光聚合方法产生了一种已经通过傅立叶变换红外光谱分析和扫描电子显微镜表征的聚合物材料。结果表明，官能团和表面形态会受到太阳入射能量的影响，其中PANI主振动带变宽，从而导致环的浓度更高。结果表明，太阳能强度比间接太阳能提高了5％的平均产率，而聚合的平均时间减少了17％。在间接太阳光和直接太阳光下，温度分别从5摄氏度增加到25摄氏度，聚合时间减少了20-27％。随着液时空速（LHSV）从0.145min增加到0.385min（-1），PANI的产率从94.0％降低到84.2％。发现最佳摩尔比为约1.25以给出PANI的最大产率。动力学分析表明，伪一阶Langmuir-Hinshelwood模型可以很好地表达苯胺在TiO2上的氧化速率。吸附平衡常数和0.791（L（-1）g min（-1））的值。从已发表的文献中比较了微反应器的性能和间歇式反应器的性能。比较证实了微反应器的独特特性。

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