Correlation Between the Cu/Al Value and Activity of Cu-ZSM-5 Catalysts and the Chemical Nature of the Starting Copper Salt Full article
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
||
|---|---|---|---|
| Output data | Year: 2005, Volume: 46, Number: 4, Pages: 613-617 Pages count : 4 DOI: 10.1007/s10975-005-0116-6 | ||
| Tags | Zeolite; Catalytic Activity; Salt Concentration; Chemical Nature; Ammonia Solution | ||
| Authors |
|
||
| Affiliations |
|
Abstract:
Cu-ZSM-5 catalysts for the selective reduction of NO with propane were obtained by ion exchange between H-ZSM-5 zeolite and an aqueous or aqueous ammonia solution of a copper salt (acetate or nitrate). Their Cu/Al values (%) defined as 2 × 100 (Cu : Al), where Cu : Al is the copper-to-aluminum atomic ratio, were determined as a function of ion exchange pH, which was varied by changing the copper salt and solution concentration. Cu/Al is primarily determined by the chemical nature of the starting copper salt. For a given salt, it is governed by the salt concentration in the solution. At a fixed salt concentration, Cu/Al is always larger for copper acetate than for copper nitrate. It can be raised to ≫100% by using an aqueous ammonia solution of a copper salt. Furthermore, it increases with increasing Si/Al in the starting zeolite if the other ion exchange conditions are equal. Irrespective of preparation conditions, the catalytic activity of Cu-ZSM-5 grows in proportion to Cu/Al. It peaks at Cu/Al ∼ 100% and then remains constant up to Cu/Al ∼ 400%. In order to achieve Cu/Al ∼ 100%, it is most appropriate to use a copper acetate solution.
Cite:
Tsikoza L.T.
, Matus E.V.
, Ismagilov Z.R.
, Sazonov V.A.
, Kuznetsov V.V.
Correlation Between the Cu/Al Value and Activity of Cu-ZSM-5 Catalysts and the Chemical Nature of the Starting Copper Salt
Kinetics and Catalysis. 2005. V.46. N4. P.613-617. DOI: 10.1007/s10975-005-0116-6 WOS Scopus РИНЦ ANCAN OpenAlex
Correlation Between the Cu/Al Value and Activity of Cu-ZSM-5 Catalysts and the Chemical Nature of the Starting Copper Salt
Kinetics and Catalysis. 2005. V.46. N4. P.613-617. DOI: 10.1007/s10975-005-0116-6 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Цикоза Л.Т.
, Матус Е.В.
, Исмагилов З.Р.
, Сазонов В.А.
, Кузнецов В.В.
Влияние химической природы исходной соли меди на Cu/Al и активность катализаторов Сu/ZSM-5
Кинетика и катализ. 2005. Т.46. №4. С.652-656. RSCI РИНЦ
Влияние химической природы исходной соли меди на Cu/Al и активность катализаторов Сu/ZSM-5
Кинетика и катализ. 2005. Т.46. №4. С.652-656. RSCI РИНЦ
Dates:
| Submitted: | Dec 1, 2003 |
| Published print: | Jul 1, 2005 |
Identifiers:
| Web of science: | WOS:000231790000020 |
| Scopus: | 2-s2.0-24044527524 |
| Elibrary: | 13490769 |
| Chemical Abstracts: | 2005:951307 |
| Chemical Abstracts (print): | 143:291144 |
| OpenAlex: | W2012586899 |