1. bookTom 51 (2020): Zeszyt 1 (January 2020)
Informacje o czasopiśmie
License
Format
Czasopismo
eISSN
1899-8526
Pierwsze wydanie
05 Feb 2007
Częstotliwość wydawania
1 raz w roku
Języki
Angielski
access type Otwarty dostęp

Activated Carbon as a Support of Catalysts for the Removal of Nitrogen Oxides

Data publikacji: 15 Oct 2020
Tom & Zeszyt: Tom 51 (2020) - Zeszyt 1 (January 2020)
Zakres stron: 9 - 16
Otrzymano: 01 Oct 2019
Przyjęty: 06 Jul 2020
Informacje o czasopiśmie
License
Format
Czasopismo
eISSN
1899-8526
Pierwsze wydanie
05 Feb 2007
Częstotliwość wydawania
1 raz w roku
Języki
Angielski
Abstract

Activated carbon was oxidised with concentrated nitric acid and impregnated with urea to form nitrogen-containing groups. Such a support was impregnated with cobalt, copper or silver nitrates to obtain catalysts for the selective catalytic reduction of nitrogen oxides with ammonia. Infrared spectra confirmed the formation of carboxylic and other organic oxygen-containing groups during oxidation. Nitrogen-containing species resulted from urea thermal decomposition. The metal-containing samples were hydrophilic. Cobalt and copper were present in the samples as small Co3O4 and CuO crystallites, while silver occurred in the form of large metallic crystallites, as seen from the X-ray diffraction patterns. Low temperature N2 sorption revealed that all samples were microporous solids, and the chemical and thermal treatment did not change their textural properties. The copper admixture caused the highest NO conversion, but worsened the selectivity and thermal stability of functionalised carbon support.

Keywords

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