2005
DOI: 10.1016/j.catcom.2005.01.009
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Selective catalytic reduction of nitric oxide with ammonia on copper (II) ion-exchanged offretite

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Cited by 15 publications
(7 citation statements)
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“…NH 4 -KOFF (wt.% Al = 6.91; K = 2.70) zeolite was prepared by 1 fold exchange of KOFF (wt.% Al = 7.20; K = 8.45) with 1M NH 4 Cl solution at 80°C under reflux for 48 h. Then the mixture was filtered and dried overnight at 80°C (obtained zeolite NH 4 -KOFF) [5]. The H-KOFF (wt.% Al = 6.73; K = 2.62) was obtained by treating NH 4 -KOFF in air at 500°C for 12 h (ramp = 2°C AE min )1 ).…”
Section: Methodsmentioning
confidence: 99%
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“…NH 4 -KOFF (wt.% Al = 6.91; K = 2.70) zeolite was prepared by 1 fold exchange of KOFF (wt.% Al = 7.20; K = 8.45) with 1M NH 4 Cl solution at 80°C under reflux for 48 h. Then the mixture was filtered and dried overnight at 80°C (obtained zeolite NH 4 -KOFF) [5]. The H-KOFF (wt.% Al = 6.73; K = 2.62) was obtained by treating NH 4 -KOFF in air at 500°C for 12 h (ramp = 2°C AE min )1 ).…”
Section: Methodsmentioning
confidence: 99%
“…For the impregnated sample (Cu(2.81)-K(2.59)OFF Imp ), 1 g of H-KOFF was mixed with 2 cm 3 of chloroform containing the desired amount of copper. All the solids are dried at 50°C and then calcined in air at 500°C for 6 h For the catalysts prepared by ion exchange in solution (IES) and solid-state ion exchange (SSIE), more details about the experimental data can be found in references [4,5] The elemental analyses were performed by the Service Central d'Analyse du CNRS (Vernaison, France) by ICP. The samples are labelled as follows: Cu(x)-K(y) OFF met ; with x and y being the Cu and K weight percents, respectively (table 1).…”
Section: Methodsmentioning
confidence: 99%
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“…Until now, hundreds of catalysts have been proposed from noble metal catalysts to basic metal catalysts, and most of developed catalysts are V 2 O 5 -WO 3 /TiO 2 and zeolite, iron oxide, copper oxide, manganese oxide, etc. [1][2][3], which are manufactured in the form of honeycomb and plate and operated at high temperature of 300-500 • C.…”
Section: Introductionmentioning
confidence: 99%
“…Por sua vez, a Ofretita permite só o ingresso de moléculas lineares e também de moléculas mono-, bi-, tri-ramificadas, porém mostra que para as moléculas lineares a difusão segue sendo tridimensional, e para as moléculas mais volumosas a difusão é monodimensional. 5 A literatura apresenta alguns trabalhos de síntese [6][7][8][9][10][11] e aplicação da Ofretita, 12 entretanto não está clara a importância e aplicação da Ofretita Tipo T. O presente trabalho teve como objetivo estudar a síntese da zeólita OFF Tipo T variando a fonte de silício e, também, a influência de realizá-la em estático ou sob agitação.…”
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