Temat: pillared bentonite - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Metal Pillared Bentonite Synthesis and Its Characteristics Using X-Ray Diffraction
Autorzy:: Sisnayati
Said, Muhammad
Aprianti, Nabila
Komala, Ria
Dwipayana, Hendra
Faizal, Muhammad
Powiązania:: https://bibliotekanauki.pl/articles/2202294.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: crystal structure
natural bentonite
pillared bentonite
Al/Fe
Opis:: Modification of bentonite by the Al/Fe metal oxide pillarization process was carried out with metal oxides. The bentonite pillars were successfully characterized using an X-Ray Diffraction (XRD) spectrophotometer. The results of XRD characterization showed the peak diffraction angle (2θ) in metal-pillared bentonite was 26.84° at 698.98 cps. Meanwhile, in thermally and chemically activated bentonite, the peak angles were marked at 20.64° and 26.7°. There is a shift in the peak angle after activation and pillarization. XRD patterns showed dioctahedral smectite and quartz accessory minerals.
Źródło:: Journal of Ecological Engineering; 2022, 23, 12; 68--74
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Modified bentonite-derived materials as catalystsfor selective catalytic reduction of nitrogen oxides
Autorzy:: Szymaszek, Agnieszka
Kubeł, Maciej
Samojeden, Bogdan
Motak, Monika
Powiązania:: https://bibliotekanauki.pl/articles/185436.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: pillared bentonite
acid activation
alumina
iron
copper
selective catalytic reduction
NO
DeNO
aktywacja kwasem
glinka
żelazo
miedź
Selektywna redukcja katalityczna
Opis:: In the last few years, cationic layered clays, including bentonites have been investigated as potentialcatalysts for SCR DeNOxsystems. In this work, bentonite as the representative of layered clays wasmodified in order to obtain an alternative, low-cost NH3–SCR catalyst. Samples of raw clay wereactivated with HCl or HNO3, treated with C2H2O4and subsequently pillared with alumina by the ion-exchange. Afterwards, the modified materials were impregnated with iron and copper. The obtainedcatalysts were characterized by XRD and FT-IR. SCR catalytic tests carried out over analyzed samplesindicated the conversion of NO of approximately 90% for the most active sample. The type of acidused for modification and the type of active phase strongly influenced the catalytic properties of theanalyzed materials.
Źródło:: Chemical and Process Engineering; 2020, 41, 1; 13--24
0208-6425
2300-1925
Pojawia się w:: Chemical and Process Engineering
Dostawca treści:: Biblioteka Nauki

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