Assessment of the Synergetic Performance of Nanostructured CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] Mixed Oxides on Automobile Exhaust Control

• Published in: Materials Vol. 15; no. 23
• Main Authors: Jayachandran, Varuna, Dhandapani, Vishnu Shankar, Muniappan, Elango, Park, Dongkyou, Kim, Byungki, Arun, A. P, Ayyappan, P. R
• Format: Journal Article
• Language: English
• Published: MDPI AG 01-11-2022
• Subjects: Air quality; Air quality management; Oxides; India
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma15238460

In order to control diesel exhaust emission, CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (CTA) mixed oxides were prepared and coated on perforated stainless steel (SS) filter plates, and the catalytic activities were analyzed in this work. The CeO[sub.2]-SnO[sub.2] (different compositions of Ce/Sn-2:8; 1:1; 8:2) composites and Al[sub.2]O[sub.3] were prepared separately via a co-precipitation approach, and CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (CTA) mixed oxides were attained by mechanical mixing of 75 wt% CeO[sub.2]-SnO[sub.2] composites with 25 wt% Al[sub.2]O[sub.3]. X-ray diffraction (XRD) and Raman spectroscopy were performed for all three CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (CTA) mixed oxides; the CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (Ce/Sn-1:1) sample confirmed the presence of cubic and tetragonal mixed faces, which enhances the redox nature (catalytic activities). Various characterizations such as high-resolution transmission electron microscopy (HRTEM), Brunauer-Emmett-Teller (BET) analysis, X-ray photoelectron spectroscopy (XPS), and a scanning electron microscope (SEM) were employed on CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (Ce/Sn-1:1) sample to investigate the structural, textural, compositional, and morphological properties. The CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (Ce/Sn-1:1) sample was coated on a perforated stainless steel (SS) filter plate via a simple, cost-effective, and novel method, and an exhaust emission test for various compression ratios (CR), injection pressure (IP), and load (L) was completed using an AVL Digas analyzer. The CeO[sub.2]-SnO[sub.2]/Al[sub.2]O[sub.3] (Ce/Sn-1:1) sample, with a size of 10.22 nm and a high surface area of about 73 m[sup.2] g[sup.−1], exhibit appreciable catalytic properties.