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Evaluation of Lanthanum Based Diesel Oxidation Catalyst for Emission Reduction with and without Ceria Support
Technical Paper
2016-28-0023
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Diesel particulates are mainly composed of elemental carbon (EC) and organic carbon (OC) with traces of metals, sulfates and ash content. Organic fraction of the particulate are considered responsible for its carcinogenic effects. Diesel oxidation catalyst (DOC) is an important after-treatment device for reduction of organic fraction of particulates. In this study, two non-noble metal based DOCs (with different configurations) were prepared and evaluated for their performance. Lanthanum based perovskite (LaMnO3) catalyst was used for the preparation of DOCs. One of the DOC was coated with support material ceria (5%, w/w), while the other was coated without any support material. Prepared DOCs were retrofitted in a four cylinder water cooled diesel engine. Various emission parameters such as particulate mass, particle number-size distribution, regulated and unregulated emissions, EC/OC etc., were measured and compared with the raw exhaust gas emissions from the prepared DOCs. It was observed that the DOC with support material was more effective in the reduction of emissions. The DOC with support material also showed higher stability compared to the DOC without the support material.
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Citation
Shukla, P., Gupta, T., and Agarwal, A., "Evaluation of Lanthanum Based Diesel Oxidation Catalyst for Emission Reduction with and without Ceria Support," SAE Technical Paper 2016-28-0023, 2016, https://doi.org/10.4271/2016-28-0023.Also In
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