Cooperative effect induced by the mixing of Na-ZSM-5 and Pd/H3PW12O40/SiO2 in the selective catalytic reduction of NO with aromatic hydrocarbons

SBA-15 materials were synthesized through the hydrothermal method. The SBA-15 prepared at the hydrothermal time of 24 h possessed a higher surface area and a good hexagonal structure, so it was used as the catalytic support in this experiment. The base metals (Cu, Co, Ni) coated on SBA-15 were prepared for toluene removal. The results revealed that the catalytic activity of Cu/SBA-15 for toluene removal was about 70% at 250 degrees C, which was the best among the three catalysts. The modification of Cu/SBA-15 by adding different transition metals (Ce, Co, Ni, Mn) to improve the removal efficiency of toluene and NO was also investigated in this study. The results indicate that the catalytic activity of Mn-Cu/SBA-15 for toluene removal was about 100% at 250 degrees C. The toluene as a reductant on the removal of NO was also determined. Furthermore, the catalytic activity of Mn-Cu/SBA-15 for NO removal can reach about 70% at 300 degrees C when toluene is used as reductant

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“…It can be explained that toluene possessed a side chain compared to benzene. Other researchers have drawn similar conclusions [48,49].…”

Section: Effects Of Different Metals For Toluene Removalsupporting

confidence: 65%

Study of SBA-15 supported catalysts for toluene and NO removal: the effect of promoters (Co, Ni, Mn, Ce)

Chuang

Liu

Chang

et al. 2010

Reac Kinet Mech Cat

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“…Recently developed HPAs and their salts have attracted much attention because of their use for SCR. Yoshimoto et al [17] used a mixture of Na-ZSM-5 and Pd/H 3 PW 12 O 40 /SiO 2 as a catalyst for the selective reduction of NO using aromatic hydrocarbons and reported that the catalyst had high activity for NO reduction. Putluru et al [18] developed heteropolyacidpromoted V 2 O 5 /TiO 2 catalysts for NH 3 -SCR, and they found that the catalysts had excellent alkali deactivation resistance.…”

Section: Introductionmentioning

confidence: 99%

The Keggin Structure: An Important Factor in Governing NH3–SCR Activity Over the V2O5–MoO3/TiO2 Catalyst

Zhang

Liu

et al. 2018

Catal Lett

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Heteropolyacids and their salts have been effectively used in selective catalytic reduction because of the Keggin structure and extraordinarily strong acidity. Catalysts with and without the Keggin structure were synthesized to further investigate the effects of heteropolyoxometallate on low temperature NH 3 -SCR. XRD, BET, Raman, H 2 -TPR, NH 3 -TPD, FT-IR, and SO 2 -TPD techniques were used to characterize the physicochemical characteristics of the catalysts. Results indicate that catalysts with the Keggin structure had more surface Brönsted and Lewis acid sites, and these catalysts had significantly improved performances in the SCR reaction and in SO 2 poisoning resistance. Graphical AbstractKeywords SCR catalyst · Ammonium heteropolyacid salt · Keggin structure Rui Wu and Ningqiang Zhang have contributed equally.

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“…The amplitude of Pd(OH)2/ZrO2 further decreased and became close to that of reference Pd(OH)2. In the radial structure functions (RSF), two peaks were observed at 1.5 and 2.9 Å (phase-uncorrected) in PdO, and these peaks corresponded to Pd-O bond of the first coordination shell and both of Pd-Pd and Pd-O bond of the second one, respectively [38][39][40][41] (Fig. 4).…”

Section: Characterization Of Catalystsmentioning

confidence: 99%

Supported palladium hydroxide-catalyzed intramolecular double C H bond functionalization for synthesis of carbazoles and dibenzofurans

Ishida

Tsunoda

Zhang

et al. 2014

Applied Catalysis B: Environmental

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Metal oxide-supported palladium hydroxide (Pd(OH)2/MOx) catalysts enabled the oxidative intramolecular couplings of diarylamines to carbazoles and diarylethers to dibenzofurans via double aryl C-H bond functionalizations with molecular oxygen as the sole oxidant. While supported PdO, Pd, and palladium acetate catalysts showed poor catalytic activities, supported Pd(OH)2 exhibited remarkably high catalytic activity. Among supported Pd(OH)2 catalysts, Pd(OH)2/ZrO2 was found to be an efficient catalyst in terms of catalytic activities and selectivities for the synthesis of carbazoles and dibenzofurans.

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Cooperative effect induced by the mixing of Na-ZSM-5 and Pd/H3PW12O40/SiO2 in the selective catalytic reduction of NO with aromatic hydrocarbons

Cited by 18 publications

References 21 publications

Study of SBA-15 supported catalysts for toluene and NO removal: the effect of promoters (Co, Ni, Mn, Ce)

Study of SBA-15 supported catalysts for toluene and NO removal: the effect of promoters (Co, Ni, Mn, Ce)

The Keggin Structure: An Important Factor in Governing NH3–SCR Activity Over the V2O5–MoO3/TiO2 Catalyst

Supported palladium hydroxide-catalyzed intramolecular double C H bond functionalization for synthesis of carbazoles and dibenzofurans

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