Adsorption properties of oxygen and methane on Ga-ZSM-5; the origin of the selectivity of NOx reduction using methane

Tabata, Takeshi; Kokitsu, Mikako; Okada, Osamu

doi:10.1007/bf00816319

Cited by 46 publications

(20 citation statements)

References 11 publications

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“…Methane has been generally considered as a relatively inactive agent and it is only recently that the TPD investigations have indicated the dissociative adsorption of methane on Ga-ZSM-5 (Tabata et al 1994). Our earlier MD calculations on the local structure of mono-and multivalent Ga-exchanged ZSM-5 (Miyamoto and Kubo 1993;Miyamoto et al 1994), suggested that the low coordination around the Ga centre resulted in the high performance of Ga-ZSM-5 for the de-NOx reaction.…”

Section: 1b Activity Of Ga-zsm-5 In the De-nox Processmentioning

confidence: 96%

Integrated computational chemistry system for catalysts design

et al. 1999

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AbstracL The understanding of valuable catalytic and adsorptive properties of heterogeneous catalysts at atomic and electronic levels Is essential for the design of novel catalysts. Computer simulation studies can significantly contribute to provide a rational Interpretation of the observed experimental results and suggest modification of new catalysts. Our recent work on the application of integrated computer simulation methods to Investigate the structure and cata|ytic properties of solid surfaces Including zeolites, transition metals and their oxides have been reviewed in this paper. We have emphasized the effectivity and applicability of Integrated computer simulation system to solve the problems in a variety of targets of Industrial and academic Importance.

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Section: 1b Activity Of Ga-zsm-5 In the De-nox Processmentioning

confidence: 96%

Integrated computational chemistry system for catalysts design

et al. 1999

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“…The investigations of the methane adsorption on porous zeolite such as NaA, NaX, NaZSM-5, and Mo/HZSM-5 by FT-IR spectroscopy has been reported [13][14][15][16][17]. Tabata et al [18] concerned on the adsorption state of methane on Ga-ZSM-5 and Cu-ZSM-5. They clarified that methane was adsorbed on Ga-ZSM-5 dissociatively at least at an elevated temperature i.e.…”

Section: Introductionmentioning

confidence: 97%

Adsorption properties of methane on Mo and Pd–Ga loaded HZSM-5 at mild temperature

Shen

Liu

et al. 2007

Catal Lett

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Methane adsorption on Mo/HZSM-5 and Pd-Ga/HZSM-5 was investigated by TPD. Even at 323 K, methane could adsorb on the catalysts. It dissociated transferred to the high hydrocarbons with temperature increase. The enough concentration of intermediates is necessary step for aromatics formation. The higher ability of hydrogenation over Pd-Ga/HZSM-5 than that over Mo/HZSM-5 was probably the reason for the rich in hydrogenation products and the lack of H 2 .

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“…They have reported that copper ion exchanged ZSM-5 shows high catalytic activity for the reduction of nitric oxide by several hydrocarbons. Various effective catalysts for this reaction have been reported by many researchers, such as silicates [6], zeolites [7,8,9,10], transition metal supported A1203 [11]. In the case of Ag supported catalysts, Miyadera have reported the high catalytic activity of Ag/A12Oa catalyst for the selective reduction of NO using propene [12].…”

Section: Introductionmentioning

confidence: 97%

Catalytic reduction of nitric monoxide by ethene over Ag/TiO2 in the presence of excess oxygen

Shiba

Hinode

Wakihara

1998

React Kinet Catal Lett

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Selective reduction of nitric oxide (NO) by ethene in the presence of excess oxygen was investigated using a silver supported on TiO2 (Ag/TiO2) catalyst. Ag/TiO2 showed high catalytic activity for the reduction of NO to N2 and N20. The activity for the reduction of NO to N2 and N20 was enhanced with an increase up to 3 wt.% Ag loading level. On increasing the concentration of ethene, the catalytic activity for the reduction of NO to N2 and N20 was enhanced. The reduction of NO over Ag/TiO2 catalyst never proceeds without coexistent oxygen.

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Adsorption properties of oxygen and methane on Ga-ZSM-5; the origin of the selectivity of NOx reduction using methane

Cited by 46 publications

References 11 publications

Integrated computational chemistry system for catalysts design

Integrated computational chemistry system for catalysts design

Adsorption properties of methane on Mo and Pd–Ga loaded HZSM-5 at mild temperature

Catalytic reduction of nitric monoxide by ethene over Ag/TiO2 in the presence of excess oxygen

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