Phosphotungstic Acid Supported on Mesoporous Graphitic Carbon Nitride as Catalyst for Oxidative Desulfurization of Fuel
Phosphotungstic Acid Supported on Mesoporous Graphitic Carbon Nitride as Catalyst for Oxidative Desulfurization of Fuel
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DOI：
10.1021/ie504372p
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发表时间：
2015-02
影响因子：
4.2
通讯作者：
Yunfeng Zhu;Mingyuan Zhu;Lihua Kang;Feng Yu;B. Dai
中科院分区：
文献类型：
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作者：
Yunfeng Zhu;Mingyuan Zhu;Lihua Kang;Feng Yu;B. Dai
将磷钨酸（H3PW12O40， HPW）固定在介孔氮化石墨碳（mpg-C3N4）上，成功制备了磷钨酸/介孔氮化石墨碳催化剂。通过x射线衍射、氮气吸附-脱附等温线、傅里叶变换红外光谱、透射电镜、电感耦合等离子体原子发射光谱和热重分析对制备的HPW/mpg-C3N4催化剂进行了表征。结果表明，HPW活性物质在mpg-C3N4表面固定化后仍保持Keggin结构。HPW/mpg-C3N4催化剂在氧化脱硫过程中表现出较高的催化活性。在最佳反应条件下，二苯并噻吩可以完全去除，且循环15次后催化剂的催化活性没有明显下降。
The phosphotungstic acid/mesoporous graphitic carbon nitride catalyst was successfully prepared by immobilizing phosphotungstic acid (H3PW12O40, HPW) on mesoporous graphitic carbon nitride (mpg-C3N4). The prepared series of HPW/mpg-C3N4 catalysts was characterized via X-ray diffraction, nitrogen adsorption–desorption isotherm, Fourier transform infrared spectroscopy, transmission electron microscopy, inductively coupled plasma atomic emission spectroscopy, and thermogravimetric analysis. Results showed that the Keggin structure of HPW active species is still kept after being immobilized on the mpg-C3N4 surface. The HPW/mpg-C3N4 catalyst showed a high catalytic activity in the oxidative desulfurization process. Dibenzothiophene can be removed completely under optimal reaction conditions, and no significant decrease in the catalytic activity of the catalyst was observed after 15 recycles.