We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Hydrothermal synthesis of FER zeolites for selective catalytic reduction of NO<sub>x</sub> by methanol.
- Authors
Xu, Yaxin; Liu, Dekai; Li, Chenyang; Sun, Han; Duan, Tianxiang; Chen, Haijun
- Abstract
Selective catalytic reduction by methanol (Methanol-SCR) is a promising technology for removing NOx from the flue gas with high concentration of sulfur. Ferrierite (FER) zeolite has been reported as a good candidate catalyst for Methanol-SCR. Herein, the effects of the synthesis conditions on the properties of FER zeolite as Methanol-SCR catalysts have been investigated by multiple characterization technologies. It was found that FER zeolite synthesized at the temperature of 160 ~ 170 °C with pyrrolidine as SDA, aluminum sulfate as aluminum source, as well as liquid sodium silicate as silicon source exhibited the best deNOx activity for Methanol-SCR reaction. Cyclohexylamine can be used to partially replace pyrrolidine to reduce the cost of SDA, while too much of cyclohexylamine would lead to the crystallization of MOR zeolite impurities. Regulating the alkalinity of the synthesis gel by the addition of H2SO4 is an effective method for the crystallization of FER zeolite with higher SiO2/Al2O3 ratio (SAR), which exhibits an improved hydrothermal stability for Methanol-SCR (R to R2-4).
- Subjects
CATALYTIC reduction; LIQUID sodium; SOLUBLE glass; ZEOLITE catalysts; HYDROTHERMAL synthesis; FERRIERITE; METHANOL
- Publication
Research on Chemical Intermediates, 2023, Vol 49, Issue 3, p1115
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-022-04950-z