Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnOx Catalyst for Low Temperature Reduction of Diesel Engine NOx Emissions Using Liquefied Petroleum Gas or Adblue as Reductants.
Saved in:
| Title: | Synthesis and Evaluation of Ceramic‐Anchored Cu‐Ce‐MnO |
|---|---|
| Authors: | Obita, Brian O.1 (AUTHOR) obita.brian@students.tukenya.ac.ke, Mbugua, Simon Ngigi1 (AUTHOR), Muhanji, Clare I.1 (AUTHOR), Lalah, Joseph O.1 (AUTHOR) |
| Source: | Energy Science & Engineering. Jul2026, Vol. 14 Issue 7, p3149-3161. 13p. |
| Subject Terms: | *Liquefied petroleum gas, *Reducing agents, *Diesel automobile emissions, *Abatement (Atmospheric chemistry), *Manganese catalysts, *Catalysts, *Catalysis |
| Abstract: | Manganese oxide‐based catalyst doped with copper and cerium was synthesized through microwave irradiation and successfully anchored on a ceramic support. Fourier Transform Infrared Radiation study showed Mn‐O bond at 529 cm−1 while X‐ray Fluorescence confirmed the availability of Cu, Ce and Mn in the ceramic matrix. Examination by SEM revealed active sites in addition to the catalyst aggregate particle size diameter as 707 mm. Energy Dispersive X‐ray established the presence of copper, cerium and manganese after catalyst synthesis. Catalytic effect of Cu‐Ce‐MnOx was studied using liquefied petroleum gas as the hydrocarbon reductant and performance comparison was made with NH3, a commonly used reductant from AdBlue solution. Sulfur dioxide poisoning resistance, hydrothermal stability and low temperature activity (< 50°C) were the critical parameters investigated by having Cu‐Ce‐MnOx catalyst placed after the water‐cooling unit. The parameters were optimized by testing Cu‐Ce‐MnOx catalyst at 3, 6, and 9 kg engine loads to reflect the expected real driving NOx emission reduction potential of the catalyst. NOx reduction efficiency was 26% at 28°C for LPG‐Cu‐Ce‐MnOx and 60% at 29°C for NH3‐Cu‐Ce‐MnOx. White biuret deposits were observed around the injection point due to low temperature decomposition of AdBlue solution. Biuret would lower the catalytic activity by clogging hence reduced number of catalyst active sites. This work successfully shows that this ceramic anchored Cu‐Ce‐MnOx catalyst has a potential application at almost room temperature NOx reduction. The anchored catalyst has the potential for integration in Diesel automobile exhaust, though it has a lower NOx conversion efficiency with LPG, compared to the conventional AdBlue. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | Manganese oxide‐based catalyst doped with copper and cerium was synthesized through microwave irradiation and successfully anchored on a ceramic support. Fourier Transform Infrared Radiation study showed Mn‐O bond at 529 cm−1 while X‐ray Fluorescence confirmed the availability of Cu, Ce and Mn in the ceramic matrix. Examination by SEM revealed active sites in addition to the catalyst aggregate particle size diameter as 707 mm. Energy Dispersive X‐ray established the presence of copper, cerium and manganese after catalyst synthesis. Catalytic effect of Cu‐Ce‐MnOx was studied using liquefied petroleum gas as the hydrocarbon reductant and performance comparison was made with NH3, a commonly used reductant from AdBlue solution. Sulfur dioxide poisoning resistance, hydrothermal stability and low temperature activity (< 50°C) were the critical parameters investigated by having Cu‐Ce‐MnOx catalyst placed after the water‐cooling unit. The parameters were optimized by testing Cu‐Ce‐MnOx catalyst at 3, 6, and 9 kg engine loads to reflect the expected real driving NOx emission reduction potential of the catalyst. NOx reduction efficiency was 26% at 28°C for LPG‐Cu‐Ce‐MnOx and 60% at 29°C for NH3‐Cu‐Ce‐MnOx. White biuret deposits were observed around the injection point due to low temperature decomposition of AdBlue solution. Biuret would lower the catalytic activity by clogging hence reduced number of catalyst active sites. This work successfully shows that this ceramic anchored Cu‐Ce‐MnOx catalyst has a potential application at almost room temperature NOx reduction. The anchored catalyst has the potential for integration in Diesel automobile exhaust, though it has a lower NOx conversion efficiency with LPG, compared to the conventional AdBlue. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 20500505 |
| DOI: | 10.1002/ese3.70522 |
