Decomposition of chlorinated volatile organic compounds (CVOCs) using NTP coupled with TiO2/GAC, ZnO/GAC, and TiO2–ZnO/GAC in a plasma-assisted catalysis system

Abedi, Kamaladdin; Shahna, Farshid Ghorbani; Jaleh, Babak; Bahrami, Abdolrahman; Yarahmadi, Rasoul; Haddadi, Rouzbeh; Gandomi, Mastaneh

doi:10.1016/j.elstat.2014.10.008

Cited by 56 publications

(14 citation statements)

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“…911 To deal with rapid deactivation, Groult and co-workers monitored the catalytic activity of a Na-X zeolite using micro-GC, which enables a time resolution of the order of 150 s, in parallel with the spectroscopic characterization of surface species. [913][914][915][916][917][918][919][920][921][922][923][924][925][926][927] Gas-phase processes are very fast under plasma conditions and the role of the surface is hardly understood. 40a) allowed three types of adsorbed MBOH species to be distinguished: species A, which interacts with the acid-base pairs of the zeolite through their OH groups and leads to a nearly free n(RC-H) frequency at B3325 cm À1 ; species B, which forms a p-coordination complex with the Na + cation characterized byñ(RC-H) = 3277 cm À1 ; and species C, which is a RC-HÁ Á ÁO hydrogen-bonded complex with the basic oxygen centers resulting inñ(RC-H) = 3215 cm À1 , as shown in the corresponding schemes in the insets of Fig.…”

Section: 22mentioning

confidence: 99%

Probing zeolites by vibrational spectroscopies

et al. 2015

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This review addresses the most relevant aspects of vibrational spectroscopies (IR, Raman and INS) applied to zeolites and zeotype materials. Surface Brønsted and Lewis acidity and surface basicity are treated in detail. The role of probe molecules and the relevance of tuning both the proton affinity and the steric hindrance of the probe to fully understand and map the complex site population present inside microporous materials are critically discussed. A detailed description of the methods needed to precisely determine the IR absorption coefficients is given, making IR a quantitative technique. The thermodynamic parameters of the adsorption process that can be extracted from a variable-temperature IR study are described. Finally, cutting-edge space- and time-resolved experiments are reviewed. All aspects are discussed by reporting relevant examples. When available, the theoretical literature related to the reviewed experimental results is reported to support the interpretation of the vibrational spectra on an atomic level.

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Section: 22mentioning

confidence: 99%

Probing zeolites by vibrational spectroscopies

et al. 2015

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“…Chlorobenzene, one of the most prevalent VOCs, is widely used in the pharmaceutical industry as solvent and in dye process [3]. Prolonged exposure to chlorobenzene may cause dizziness, neurasthenia, and increased risk of cancer.…”

Section: Introductionmentioning

confidence: 99%

Performance of chlorobenzene removal in a nonthermal plasma catalysis reactor and evaluation of its byproducts

Zhu

Mao

Jiang

et al. 2015

Chemical Engineering Journal

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“…In both spectra, the broad band maximising at 3471 cm −1 corresponds to the vibration frequency of O-H bonds providing a direct evidence of unaffected O-H groups of BY remaining in the composite. Bands appearing at 1508 cm −1 in both spectra can be assigned to the vibrations of the C=C bonds in benzene rings (Abedi et al, 2015) ZnO/GAC, and TiO2-ZnO/GAC combined with non-thermal plasma (NTP. Moreover, the asymmetric stretching vibration of S=O bond is responsible for the prominent absorption band appearing at 1477 cm −1 in BY, while less noticeable in Ti-BY.…”

Section: Characterizationmentioning

confidence: 99%