The Role of Surfactants in the Formation of Highly Dispersed Iron-Zirconium Oxide Composites with Uniform Pores Full article
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Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Output data | Year: 2002, Volume: 43, Number: 1, Pages: 139-145 Pages count : 7 DOI: 10.1023/A:1014221817792 | ||
| Tags | Surfactant; Zirconium; Pore Volume; Average Pore; Thermolysis | ||
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Abstract:
The effects of the nature and concentration of surfactants and the preparation conditions on the genesis of iron–zirconium composites with a [Fe3+]/[Zr4+] ratio of 0.123 were studied. The effect of surfactants on the physicochemical properties of precipitates is determined by the conditions of synthesis. The amount of surfactants retained by the precipitate at pH ∼3 is about an order of magnitude greater than at pH ∼9. The thermolysis of samples synthesized at acidic pH is accompanied by the dehydration and dehydroxylation of iron–zirconium composites as well as by the decomposition and destruction of surfactants. In the latter processes, compounds or their fragments capable of reducing some phases are removed in a stepped-up manner. The specific surface area of oxide systems formed in this way is at most 100–150 m2/g. In the pH range corresponding to the complete precipitation of the components, highly dispersed single-phase and uniformly porous composites are formed. The choice of a surfactant, its fraction, and preparation conditions enables the preparation of oxides with specific surface areas of 100–400 m2/g. The average pore diameter of the samples ranges from 3.0 to 27.0 nm, and the total pore volume ranges from 0.20 to 0.38 cm3/g.
Cite:
Ivanova A.S.
, Fedotov M.A.
, Litvak G.S.
, Trukhan S.N.
, Ivanov V.P.
The Role of Surfactants in the Formation of Highly Dispersed Iron-Zirconium Oxide Composites with Uniform Pores
Kinetics and Catalysis. 2002. V.43. N1. P.139-145. DOI: 10.1023/A:1014221817792 WOS Scopus РИНЦ ANCAN OpenAlex
The Role of Surfactants in the Formation of Highly Dispersed Iron-Zirconium Oxide Composites with Uniform Pores
Kinetics and Catalysis. 2002. V.43. N1. P.139-145. DOI: 10.1023/A:1014221817792 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Иванова А.С.
, Федотов М.А.
, Литвак Г.С.
, Трухан С.Н.
, Иванов В.П.
Роль поверхностно-активных веществ в формировании высокодисперсных однороднопористых оксидных железоциркониевых композиций
Кинетика и катализ. 2002. Т.43. №1. С.150-156. РИНЦ
Роль поверхностно-активных веществ в формировании высокодисперсных однороднопористых оксидных железоциркониевых композиций
Кинетика и катализ. 2002. Т.43. №1. С.150-156. РИНЦ
Dates:
| Submitted: | May 12, 2000 |
| Published print: | Jan 1, 2002 |
Identifiers:
| Web of science: | WOS:000174318000021 |
| Scopus: | 2-s2.0-0037899643 |
| Elibrary: | 13416380 |
| Chemical Abstracts: | 2002:218852 |
| Chemical Abstracts (print): | 136:405509 |
| OpenAlex: | W314760384 |