The Stability of Monolith CuZSM-5 Catalysts for the Selective Reduction of Nitrogen Oxides with Hydrocarbons: II. Synthesis and Characterization of Bulk Cu(80% ZSM-5 + 20% Al2O3) Catalysts Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2001, Volume: 42, Number: 6, Pages: 854-856 Pages count : 3 DOI: 10.1023/A:1013295519433 | ||||
| Tags | Al2O3; Zeolite; Hydrocarbon; Propane; Catalytic Activity | ||||
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Abstract:
The effects of ion-exchange conditions and the zeolite Si/Al atomic ratio on the copper contents of Cu(80% ZSM-5 + 20%Al2O3) catalysts and on the catalytic activity in the selective reduction of NO with propane were studied. It was found that the synthesis of these catalysts exhibited the same behavior as in the case of bulk CuZSM-5 catalysts containing no Al2O3. The copper contents of the catalysts depend on the pH and concentration of copper solutions used for ion exchange, and the maximum activity (NO conversion) is attained even at an exchange level (Cu/Al) close to 100% regardless of pH and the zeolite Si/Al atomic ratio. At 300–400°C, the activity of the test catalysts is 10–20% lower than the activity of CuZSM-5 catalysts containing no Al2O3 at equal exchange levels. This difference in the activity almost disappeared as the reaction temperature was increased. It was also found that in the Cu(80% ZSM-5 + 20%Al2O3) catalysts, an exchange level close to that in CuZSM-5 catalysts is attained by ion exchange from more concentrated solutions. An increase in the exchange level to ≫ 100% (by an increase in the pH of a copper solution from ∼6 to ∼10, as in the case of CuZSM-5 catalysts), had no effect on the activity.
Cite:
Ismagilov Z.R.
, Shkrabina R.A.
, Tsikoza L.T.
, Yashnik S.A.
, Shikina N.V.
, Sazonov V.A.
, Veringa H.J.
The Stability of Monolith CuZSM-5 Catalysts for the Selective Reduction of Nitrogen Oxides with Hydrocarbons: II. Synthesis and Characterization of Bulk Cu(80% ZSM-5 + 20% Al2O3) Catalysts
Kinetics and Catalysis. 2001. V.42. N6. P.854-856. DOI: 10.1023/A:1013295519433 WOS Scopus РИНЦ ANCAN OpenAlex
The Stability of Monolith CuZSM-5 Catalysts for the Selective Reduction of Nitrogen Oxides with Hydrocarbons: II. Synthesis and Characterization of Bulk Cu(80% ZSM-5 + 20% Al2O3) Catalysts
Kinetics and Catalysis. 2001. V.42. N6. P.854-856. DOI: 10.1023/A:1013295519433 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Исмагилов З.Р.
, Шкрабина Р.А.
, Цикоза Л.Т.
, Яшник С.А.
, Шикина Н.В.
, Сазонов В.А.
, Веринга Х.
Стабильность блочных катализаторов CuZSM-5 для процессов селективного восстановления оксидов азота углеводородами. II. Синтез и исследование массивных катализаторов Cu(80% ZSM-5 + 20% Al2O3)
Кинетика и катализ. 2001. Т.42. №6. С.935-937. РИНЦ
Стабильность блочных катализаторов CuZSM-5 для процессов селективного восстановления оксидов азота углеводородами. II. Синтез и исследование массивных катализаторов Cu(80% ZSM-5 + 20% Al2O3)
Кинетика и катализ. 2001. Т.42. №6. С.935-937. РИНЦ
Dates:
| Submitted: | Jun 23, 2000 |
| Published print: | Nov 1, 2001 |
Identifiers:
| Web of science: | WOS:000173018500020 |
| Scopus: | 2-s2.0-0037901863 |
| Elibrary: | 13371780 |
| Chemical Abstracts: | 2002:30753 |
| Chemical Abstracts (print): | 136:298856 |
| OpenAlex: | W4229928689 |