Fabrication of nf-MnO2/PPS Functional Composites for Selective Reduction of NO<italic style="font-style: italic">x</italic> with NH3

Wei-jie Zheng; Yu-ying Zheng; Jian Chen; Hai-qiang Zou; Bin-bin Fu; Xue-hong Chen

doi:10.11777/j.issn1000-3304.2017.17014

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Fabrication of nf-MnO₂/PPS Functional Composites for Selective Reduction of NO_x with NH₃

Research Article | 更新时间：2021-01-26

- Fabrication of nf-MnO₂/PPS Functional Composites for Selective Reduction of NO_x with NH₃
- Acta Polymerica Sinica Issue 11, Pages: 1806-1815(2017)
- 作者机构：
  
  福州大学材料科学与工程学院福州 350108
- 作者简介：
- 基金信息：
- DOI：10.11777/j.issn1000-3304.2017.17014
  CLC：
- Published：20 November 2017，
  
  Received：16 January 2017，
  
  Revised：21 March 2017，
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Wei-jie Zheng, Yu-ying Zheng, Jian Chen, Hai-qiang Zou, Bin-bin Fu, Xue-hong Chen. Fabrication of nf-MnO₂/PPS Functional Composites for Selective Reduction of NO_x with NH₃. [J]. Acta Polymerica Sinica (11):1806-1815(2017)
DOI：

Wei-jie Zheng, Yu-ying Zheng, Jian Chen, Hai-qiang Zou, Bin-bin Fu, Xue-hong Chen. Fabrication of nf-MnO₂/PPS Functional Composites for Selective Reduction of NO_x with NH₃. [J]. Acta Polymerica Sinica (11):1806-1815(2017) DOI： 10.11777/j.issn1000-3304.2017.17014.

摘要

首先采用表面活性剂十二烷基硫酸钠（SDS）对聚苯硫醚（PPS）滤料进行表面活化，由于SDS亲水基团（SO

）与溶液中的H

发生静电吸附作用，使得之后高锰酸钾在PPS滤料表面原位生成纳米花状二氧化锰，制得nf-MnO

/PPS复合滤料；并通过探讨高锰酸钾与滤料的质量比、反应时间对nf-MnO

/PPS复合滤料结构及性能的影响，从而得到最佳制备条件.并利用场发扫描电子显微镜（FESEM）、透射电子显微镜（TEM）、X-射线光电子能谱（XPS）、脱硝活性测试等分析手段对该复合滤料的结构和性能进行了研究；在其基础上利用原位聚合法，在复合滤料表面形成聚吡咯包覆层，制得nf-MnO

/PPy@PPS复合滤料，并通过多种测试分析手段对改性滤料的结构和性能进行了研究.最后，脱硝测试结果显示，由最佳条件制备出的nf-MnO

/PPS表现出了最优异的脱硝活性，其在80~180 ℃时的NO转化率达到36%~100%，nf-MnO

/PPy@PPS表现出了更好的结合强度和催化稳定性能，但脱硝活性有所下降.

Abstract

Polyphenylene sulfide (PPS) filter was firstly treated by lauryl sodium sulfate (SDS) to activate the surface of PPS. Because of the electrostatic interaction between SO

and H

the potassium permanganate (KMnO

) can transform into nano flower of manganese dioxide by redox reaction on the surface of PPS. The as-prepared functional composites were denoted as nf-MnO

/PPS. The preparation conditions were optimized as follows:mass ratio of KMnO

to PPS was 0.5 and reaction time 5.5 h. The best preparation condition was obtained through studying the relationship between the mass ratio of KMnO

/PPS

reaction time and the performance of the composites. Field emission scanning electron microscopy (FESEM)

transmission electron microscopy (TEM)

X-ray photoelectron spectroscopy (XPS)

Fourier transform infrared spectroscopy (FTIR) and SCR activity test were used to investigate the structure

properties and the performance of the composites. FESEM displayed that flake-like MnO

catalyst was uniformly distributed on the surface of PPS filter material

the as-prepared nf-MnO

catalyst was coated on PPS material by a redox method

and the results showed that all the composite filter materials presented excellent SCR activity

and the conversion of NO could reach 100% at 180 ℃. In addition

the above-mentioned composite filter material

denoted as nf-MnO

/PPy@PPS

was then covered by a layer of polypyrrole (PPy) composites

via

the interfacial polymerization technique. The structure properties and performance of nf-MnO

/PPy@PPS were also studied using. FESEM

TEM

XPS

FTIR and SCR activity test. Finally

as shown by SCR activity test

the nf-MnO

/PPS

fabricated under the optimized conditions

led to the conversion of NO to 36%-100% in the temperature range of 80-180 ℃. The nf-MnO

/PPy@PPS demonstrated higher mechanical strength of combination and catalytic stability

with slightly decreased conversion of NO.

关键词

聚苯硫醚(PPS)吡咯原位聚合法结合强度催化剂稳定性能

Keywords

Polyphenylene sulphidePolypyrroleIn situ polymerizationStrength of combinationCatalytic stability

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⁰

Fabrication of nf-MnO2/PPS Functional Composites for Selective Reduction of NOx with NH3

DOI：10.11777/j.issn1000-3304.2017.17014

摘要

Abstract

关键词

Keywords

references

Fabrication of nf-MnO₂/PPS Functional Composites for Selective Reduction of NO_x with NH₃