Elango, M and Varuna, J Assessment of the Synergetic Performance of Nanostructured CeO2-SnO2/Al2O3 Mixed Oxides on Automobile Exhaust Control. Materials, 15: 8460. pp. 1-15.

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Abstract

In order to control diesel exhaust emission, CeO2
-SnO2/Al2O3
(CTA) mixed oxides were
prepared and coated on perforated stainless steel (SS) filter plates, and the catalytic activities were analyzed in this work. The CeO2
-SnO2
(different compositions of Ce/Sn—2:8; 1:1; 8:2) composites and
Al2O3 were prepared separately via a co-precipitation approach, and CeO2
-SnO2/Al2O3
(CTA) mixed
oxides were attained by mechanical mixing of 75 wt% CeO2
-SnO2 composites with 25 wt% Al2O3
.
X-ray diffraction (XRD) and Raman spectroscopy were performed for all three CeO2
-SnO2/Al2O3
(CTA) mixed oxides; the CeO2
-SnO2/Al2O3
(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 CeO2
-SnO2/Al2O3
(Ce/Sn-1:1) sample to investigate the structural, textural,
compositional, and morphological properties. The CeO2
-SnO2/Al2O3
(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 CeO2
-SnO2/Al2O3
(Ce/Sn-1:1) sample, with a size of
10.22 nm and a high surface area of about 73 m2 g
−1
, exhibit appreciable catalytic properties.

Item Type: Article
Uncontrolled Keywords: air pollution; CeO2 -SnO2/Al2O3 ; oxygen vacancies; BET; XPS; Raman; diesel exhaust; AVL gas analyzer
Divisions: PSG College of Arts and Science > Department of Physics
Depositing User: Mr Team Mosys
Date Deposited: 20 Mar 2023 09:34
Last Modified: 20 Mar 2023 09:34
URI: http://ir.psgcas.ac.in/id/eprint/1810

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