Destruction of naphthalene via ozone-catalytic oxidation process over Pt/Al2O3 catalyst

Yuan, Min-Hao; Chang, Ching‐Yuan; Shie, Je-Lueng; Chang, Cha-Chi; Chen, Jia-Hao; Tsai, Wen‐Tien

doi:10.1016/j.jhazmat.2009.10.081

Cited by 49 publications

(15 citation statements)

References 41 publications

(66 reference statements)

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“…VOCs are known to possess high toxicity, poison the atmosphere and have a negative impact on human health and the environment [34]. To date, numerous ways to solve the challenge of air pollution, such as combustion of wastes, biodegradation [116], adsorption [117], plasmochemical decomposition [118], photocatalytic oxidation [119], ozonation [120], etc., have been proposed. The main drawback of these methods is the high-energy consumption that may be accompanied by the formation of formaldehyde and CO as well as the complexity of regeneration of the active phase (bacteria, adsorbents, photocatalysts).…”

Section: Vocs Abatementmentioning

confidence: 99%

Ag/CeO2 Composites for Catalytic Abatement of CO, Soot and VOCs

et al. 2018

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Nowadays catalytic technologies are widely used to purify indoor and outdoor air from harmful compounds. Recently, Ag-CeO 2 composites have found various applications in catalysis due to distinctive physical-chemical properties and relatively low costs as compared to those based on other noble metals. Currently, metal-support interaction is considered the key factor that determines high catalytic performance of silver-ceria composites. Despite thorough investigations, several questions remain debating. Among such issues, there are (1) morphology and size effects of both Ag and CeO 2 particles, including their defective structure, (2) chemical and charge state of silver, (3) charge transfer between silver and ceria, (4) role of oxygen vacancies, (5) reducibility of support and the catalyst on the basis thereof. In this review, we consider recent advances and trends on the role of silver-ceria interactions in catalytic performance of Ag/CeO 2 composites in low-temperature CO oxidation, soot oxidation, and volatile organic compounds (VOCs) abatement. Promising photoand electrocatalytic applications of Ag/CeO 2 composites are also discussed.Au [17][18][19][20][21][22][23], Ru [24,25], Rh [26][27][28][29], and Cu [30,31] were proposed. Metal oxide-based catalysts (Co 3 O 4 [32], MnO x [33], etc.) also attracted wide interest. However, a significant part of the developed catalysts has limited use under real conditions due to high costs of noble metals (the loading of palladium, platinum, gold is of 2-10 wt. %), relatively low stability to "hard" conditions of oxidation processes causing the loss of active component and reduction of the catalyst activity and selectivity. Therefore, the development of high-performance affordable and stable catalysts for low-temperature total oxidation of harmful compounds is still challenging. Efficiency and costs of such catalysts are connected with proper selection of the type of active component, support, and preparation method [34].Recently, supported silver catalysts have brought about wide interest due to their high activity in low-temperature oxidation processes. Different supports are studied (SiO 2 , CeO 2 , MnO x , TiO 2 , Al 2 O 3 , ZrO 2 , etc.) [35][36][37][38]. It is shown that an enhanced catalytic activity of Ag-based catalysts can be achieved by using reducible metal oxides as supports and by controlling the metal-support interaction to provide synergistic effect between active sites of the support and noble metal [39].Among the supports mentioned, CeO 2 brings about high interest, since it combines exceptional redox and acid-base properties with oxygen storage, which can be controlled by proper preparation methods and treatments. Moreover, these distinctive properties of ceria cause its wide applications as a support for catalysts. For this reason, highly active and relatively inexpensive Ag/CeO 2 composite is considered promising heterogeneous catalyst for total oxidation of harmful organic compounds, including formaldehyde [40], , soot [44][45][46][47][48][49]. The Ag...

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Section: Vocs Abatementmentioning

confidence: 99%

Ag/CeO2 Composites for Catalytic Abatement of CO, Soot and VOCs

et al. 2018

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“…Naphthalene has been studied as it has been reported to be the most abundant PAHs in polluted urban atmospheres [39]. It has been defined as a hazardous air pollutant by the US environmental protection agency (EPA) [40] and classified as possibly carcinogenic to humans by the international agency for research on cancer (IARC) [35].…”

Section: Catalyst -mentioning

confidence: 99%

Control of harmful hydrocarbon species in the exhaust of modern advanced GDI engines

Hasan

Abu-Jrai

Turner

et al. 2016

Atmospheric Environment

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Publisher: Elsevier NOTICE: this is the author's version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, [129, (2016)]

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“…Basically, a cyclone separator receives a gas stream and passes it through cylindrical conical housing thereby forming a vortex such that particles therein are separated from the gas stream and pass out a discharge outlet while the cleaned gas passes through a cleaned gas outlet. It is a centrifugal force created by the action of the vortex thus leaving the cleaned gas at the vortex center, where the cleaned gas continually flows outwardly through the clean gas outlet [52].…”

Section: Cyclone Separatorsmentioning

confidence: 99%

“…Anthropogenic sources can be divided into two groups: pyrogenic and petrogenic. Pyrogenic PAHs are formed during combustion of fossil fuel and biomass (vehicle exhaust, waste incinerators, power plants), but petrogenic PAHs during combustion of crude oil and its products [8,6,52]. Nowadays there are different methods for treating flue gases and effluents to reduce emissions into the environment.…”

Section: Introductionmentioning

confidence: 99%

A Review of Methods for Reduction of Polycyclic Aromatic Hydrocarbons from Waste Water and Flue Gases

Semjonova

Teirumnieks

2015

ETR

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This review describes methods which can be used for the reduction of the polycyclic aromatic hydrocarbon (PAH) emissions from wastewater and flue gases including principles of operation of the methods and studies of their effectiveness. There are discussed both methods, which nowadays are already used industrially, and their improvement opportunities as well as recent technological trends in this field. The methods have been classified into two main categories: flue gas treatment and wastewater treatment.

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Destruction of naphthalene via ozone-catalytic oxidation process over Pt/Al2O3 catalyst

Cited by 49 publications

References 41 publications

Ag/CeO2 Composites for Catalytic Abatement of CO, Soot and VOCs

Ag/CeO2 Composites for Catalytic Abatement of CO, Soot and VOCs

Control of harmful hydrocarbon species in the exhaust of modern advanced GDI engines

A Review of Methods for Reduction of Polycyclic Aromatic Hydrocarbons from Waste Water and Flue Gases

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