La1-xZnxMnO3 (x = 0 to 0.6) perovskite catalysts used in plasma-catalytic oxidation of volatile organic compounds

سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 331

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شناسه ملی سند علمی:

ISPTC21_288

تاریخ نمایه سازی: 30 دی 1397

چکیده مقاله:

Air pollution such as volatile organic compounds (VOCs) is one of the main concerns ofhuman in the 21st century. VOCs are one of the major air contaminants. Up until now, variouskinds of catalysts have been tested in the plasma-catalytic removal of VOC pollutants. Perovskitecatalysts have shown excellent performance in VOC oxidation. Perovskites are the mixed metaloxides with the general formula of ABO3 [1]. During the last three decades, non-thermal plasma(NTP) technology has shown great potential for removal of low concentration of VOCs in largevolume waste gas streams due to its unique ability to generate a chemically reactive environmenteven at room temperature [2]. In this work simultaneous use of plasma technology, a perovskitecatalyst is used to improve catalyst performance.The La1-x Znx MnO3 (x = 0 to 0.6) perovskite-type catalyst were prepared by sol-gel methodusing citric acid as a complexing agent. The obtained sample was calcined at 700 ºC for 5 hr. Thesample was tested in a dielectric barrier discharge (DBD). The experimental set up consisted of agas supply system, a DBD reactor, a high voltage power supply and gas analysis instrument. Thegas flow is consisting of Benzene, Toluene, and Xylene (BTX). In this work, the effects ofdifferent voltage (5, 10, and 15 kV) were investigated. The results showed that the perovskiteLa0.8Zn0.2MnO3 in 15 kV is the best reducibility with 98% Benzene 99% Toluene, and 86%xylene among the tested catalysts.

نویسندگان

Nooshin Parvizi

Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz- Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran

Nader Rahemi

Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz- Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran

Somaiyeh Allahyari

Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz- Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran

Shayan Hoseini

Chemical Engineering Faculty, Sahand University of Technology, Sahand New Town, Tabriz- Environmental Engineering Research Centre, Sahand University of Technology, Sahand New Town, Tabriz, Iran