Al2O3-supported transition-metal oxide catalysts for catalytic incineration of toluene

Wang, Ching-Huei

doi:10.1016/j.chemosphere.2003.10.036

Cited by 82 publications

(36 citation statements)

References 21 publications

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“…일반적인 IPA 제거방법으로 습식 스크러버(scrubber)와 열산화 방 법이 알려져 있으나 [7], 흡수법은 단순히 오염물질을 기상에서 액상으 로 전달하므로 2차적인 수질오염 문제를 야기하고, 750 ℃ 이상의 고 온을 필요로 하는 열산화 방법은 높은 연료비용과 특수한 내열 소재 를 사용해야 하는 문제점이 있다 [3]. 그밖에 촉매 혹은 광촉매 공정, 저온 플라즈마 공정 및 플라즈마-촉매 하이브리드 시스템 등이 연구 되고 있다 [7][8][9][10][11].…”

Section: 및 세정제로 널리 사용되고 있는 물질이다 특히 디스크헤드와 레이 저의 렌즈 광학 디스크 드라이브 및 액정unclassified

Oxidation of Isopropyl Alcohol in Air by a Catalytic Plasma Reactor System

Jo¹,

Mok²

2014

Applied Chemistry for Engineering

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A catalytic plasma reactor was employed for the oxidation of isopropyl alcohol (IPA) classified as a volatile organic compound (VOC). Copper oxide (Cu : 0.5% (w/w)) supported on a multichannel porous ceramic consisting of α-Al2O3 was used as a catalyst, which was directly exposed to the plasma created in it. The effects of discharge voltage and reaction temperature on the concentrations of IPA and its byproducts were examined to understand the behavior of the catalytic plasma reactor. Without thermal insulation, the reactor temperature increased up to 120 ℃ at an applied voltage of 17 kV (discharge power : 28 W), and the IPA at a flow rate of 1 L min -1 (O2 : 10% (v/v); IPA : 1000 ppm) was completely removed. At temperatures below 120 ℃, however, besides the desirable product CO2, several unwanted byproducts such as acetone, formaldehyde and CO were also formed from IPA. On the other hand, when the reactor was thermally insulated, the plasma discharge increased the temperature up to 265 ℃ under the same condition and most of IPA was oxidized to CO2. Without loading CuO on the ceramic support, the plasma discharge in the thermally insulated reactor produced nearly equal amounts of CO2 and CO. On comparison, with the catalyst alone (temperature : 265 ℃), more than 70% of the removed IPA was simply converted into another type of VOC (acetone), indicating that the catalyst assisted by the plasma is more effective in the oxidation of IPA than that of the catalyst-alone process. Keywords

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Section: 및 세정제로 널리 사용되고 있는 물질이다 특히 디스크헤드와 레이 저의 렌즈 광학 디스크 드라이브 및 액정unclassified

Oxidation of Isopropyl Alcohol in Air by a Catalytic Plasma Reactor System

Jo¹,

Mok²

2014

Applied Chemistry for Engineering

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“…Many catalysts have been developed for catalytic oxidation, such as Pd, Rh, Pt, Ru, Au, Cu, Co, and Cr, supported on Al 2 O 3 (Kobayashi et al, 2001;Morà n-Pineda et al, 1999;Toebes et al, 2001;Vass and Georgescu, 1996;Wang, 2004). The performance of catalytic oxidation depends not only on the active metal but also on the support; the activity of a catalyst will be enhanced by a support that has superior antacid and antalkali properties, high surface area, and high pore volume and is hydrophobic (Goncalves and Figueiredo, 2004).…”

Section: Introductionmentioning

confidence: 98%

Evaluating the potential of CNT-supported Co catalyst used for gas pollution removal in the incineration flue gas

Tseng

Wey

et al. 2009

Journal of Environmental Management

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“…The required temperature of VOCs catalytic combustion can be greatly decreased by developing efficient catalysts, thereby reducing the energy consumption. Wang et al (Wang, 2004) adopted γ-Al 2 O 3 supported transition-metal oxide catalysts in order to oxidize methylbenzene which can be degraded completely under a temperature of 360 • C. Wang et al (2006) also used CuO/CeO 2 for catalytic oxidation of toluene which can be completely degraded at temperature lower than 240 • C.…”

Section: Chemical Methodsmentioning

confidence: 99%

Recent Development of VUV-Based Processes for Air Pollutant Degradation

Huang

et al. 2016

Front. Environ. Sci.

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As air pollution poses a great challenge around the globe, it is essential to fashion out a way of efficiently degrading the air pollutants. Vacuum Ultraviolet (VUV)-based processes are an emerging and promising technology for environmental remediation such as air cleaning, wastewater treatment, and air/water disinfection. When VUV irradiation, photolysis, photocatalysis, and ozone-assisted oxidation are involved at the same time, it results in the fast degradation of air pollutants because of their strong oxidizing capacity. The mechanisms of how the oxidants are produced and how they react are discussed in this review. This paper focuses mainly on the three VUV-based oxidation processes including VUV photolysis, VUV combined with ozone-assisted oxidation, and VUV-PCO with emphasis on their mechanisms and applications. Also, the outlook of these processes are proposed in this paper.

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Al2O3-supported transition-metal oxide catalysts for catalytic incineration of toluene

Cited by 82 publications

References 21 publications

Oxidation of Isopropyl Alcohol in Air by a Catalytic Plasma Reactor System

Oxidation of Isopropyl Alcohol in Air by a Catalytic Plasma Reactor System

Evaluating the potential of CNT-supported Co catalyst used for gas pollution removal in the incineration flue gas

Recent Development of VUV-Based Processes for Air Pollutant Degradation

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