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Catalytic Converter - DOAJ

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Last Updated: 15 January 2023

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An Improvement of Catalytic Converter Activity Using Copper Coated Activated Carbon Derived from Banana Peel

Vehicle exhaust gas leakage of nitrogen oxide, nitrogen monoxide, and carbon monoxide causes adverse environmental impacts as well as human health. This paper details the use of a catalytic converter made from activated carbon to raise the activity by its adsorption capability. After heating them up to 400 °u00baC for 1. 5 hours and activation using natrium hydroxide, the activated carbon was extracted from banana peels. The catalytic converter made from activated carbon coated with copper was also tested for its results on diesel engine Yanmar TF 70 LY-DI with variations in the number of catalyst layers, namely 1 layer, 2 layers, and 3 layers. According to NOx, NO, and CO, respectively, a three-layer catalyst showed the highest activity with the highest catalyst percentage in reducing emissions concentration of 48. 76 percent; 29. 35 % and 29. 35 percent.

Source link: https://doi.org/10.14710/ijred.2023.48739


The Effect of Bed Catalyst Design Variation on Catalytic Converter against Exhaust Emission Level of Carbon Monoxide (CO) and Hydrocarbon (HC) in Gasoline Engine

The purpose of this report was to determine the level of exhaust emissions with and without application of bed catalyst variation by putting hole on the top and bottom of bed catalyst portion, putting hole on the middle and side of the bed catalyst component, and using hole on the top and bottom of the bed catalyst part. At 1500 RPM, the CO level on the full hole was 3. 0 percentvol, at 1500 RPM, hole on the middle and side was 2. 9 percentvol at 1500 RPM, hole on the top and side was 31 percentvol at 1500 RPM, while hole on the bottom was 1. 9 percentvol at 1500 RPM, and hole on the top and bottom was 1. 9 percentvol at 1500 RPM.

Source link: https://doi.org/10.17977/um016v2i22018p064


Copper Oxide Nanoparticles Incorporated in the Metal Mesh Used to Enhance the Heat Transfer Performance of the Catalytic Converter and to Reduce Emission

The paper explores how using a computational fluid dynamic to simulate the transient temperature profile of a chemically heated catalytic converter in exhaust can help in the design of a more reliable and energy-efficient catalytic converter. In this study, nanoparticles were used as a heat transfer agent to increase the exhaust gas's thermal conductivity. In the new catalytic converter, this research has been carried out to determine nanoparticle flow behavior and heat transfer. When the temperature of the main converter hits 250°F and the CO is initially 2. 7% Vol, and after reaching light off, it is 1. 9 percent Vol. With nanocopper oxide reaching this temperature in 168 seconds, the time taken to reach the HC light-off temperature is 300-u00b0C.

Source link: https://doi.org/10.1155/2022/9169713


Selective Adsorptive Recovery of Platinum from Spent Catalytic Converter

The synthesis of monomeric mercaptoacetamide and?-dibromoalkanes was achieved by condensation reaction of monomeric mercaptoacetamide and?-dibromoalkanes. Adsorption was evaluated for Pt2+ adsorption by adsorption isotherm and selectivity. At optimum pH = 1. 31 g-1, the copolymer displayed monolayer Langmuir-type adsorption isotherm with a qm of 177 mg g-1.

Source link: https://doi.org/10.3303/CET2294060


Research on characteristics of thermoelectric generator with integrated muffler and catalytic converter

A catalytic converter is suggested in order to save the heat in the exhaust gas and increase the compatibility of thermoelectric generator, muffler, and catalytic converter. The average surface temperature of model B is the highest in Europe, which is 291. 95 u00b0C, when the exhaust temperature is 350 °C and inlet velocity is 30 m/s. From the standpoint of improving NOx's conversion rate, the exhaust flow field distribution of the catalytic converter in Model B is more uniform, and has less effect on NOx's conversion rate.

Source link: https://doi.org/10.1016/j.egyr.2021.11.120


Prediction of Heat Transfer and Fluid Flow Effects on Entropy Generation in a Monolithic Catalytic Converter Using Large-Eddy Simulation

Using large eddy simulation, heat transfer and fluid flow and their effects on entropy generation in a real catalytic converter of a Lada Niva 21214 vehicle are investigated in this study. The pressure drop over the catalytic converter is measured at first, at constant temperature, variable volumetric flow rates, and extrapolated to high volumetric flow rates for dry air and exhaust gas under realistic engine operating conditions using the Darcyu2013Forchheimer relation. By using the large-eddy simulation, nonreacting isothermal temperatures and nonreacting conditions with conjugate heat transfer are determined for non-responsive isothermal conditions and nonreacting heat transfer. In addition, entropy production by viscous dissipation is concentrated in the monolith region, owing to high-velocity gradients at the wall of the narrow ducts in the monolith.

Source link: https://doi.org/10.3390/e24050602


In situ synthesis and preconcentration of cetylpyridinium complexed hexaiodo platinum nanoparticles from spent automobile catalytic converter leachate using cloud point extraction

cetylpyridinium complexed nanoparticles from the leachate of spent automobile catalytic converter using potassium iodide and assisted by a combination of cationic and non-ionic surfactants; cetylpyridinium bromide and Triton X-114, respectively, are included in this article. The XRD pattern established the product nanoparticles' tetragonal crystal structure. The nanoparticles were spherical in shape, and the particle size obtained with TEM was about 5. 6 nm. The synthesized Pt-I NP exhibits advantages such as simultaneous synthesis and preconcentration; synthesis at micromolar level from metal scrap; improved nanoparticle recycling; biodegradability and biocompatibility of the used surfactants; and dual solubility of the synthesized Pt-I NP. Hence, the designed process can be used to separate, large scale synthes, and preconcentration of Pt-I NP from various environmental and industrial wastes in a single pot.

Source link: https://doi.org/10.1016/j.arabjc.2019.10.008


Assessment of the integration of Three-Way Catalytic converter and Thermoelectric Generator

A proven way to restore the exhaust heat in automobiles is to use a Thermoelectric Generator, which can also raise electricity usage. Integration of a Three-Way Catalytic converter and TEG can improve the results by using the heat generated during catalytic process, but the conversion does not have poor compatibility. When TWC with the coupled carrier is working stably, the maximum output power of TEG is increased. The latest TEG with coupled TWC carrier has the highest conversion efficiency for CO, NO, and H2gases.

Source link: https://doi.org/10.1016/j.egyr.2022.05.175


Potential fly ash waste as catalytic converter for reduction of HC and CO emissions

Environmental issues have been caused by the large amount of fly ash produced in the coal industry. This paper reviews the results of catalytic converters made from coal fly ash for the reduction of greenhouse gas emissions of a motor vehicle. The increase in the length of a catalytic converter could reduce the emissions of HC and CO by increasing the engine speed. With or without a catalytic converter, the emissions reduced with or without catalytic converter. Therefore, the use of fly ash as a catalytic converter in the exhaust system motor vehicles can eliminate several environmental issues such as fly ash disposal and gas emission.

Source link: https://doi.org/10.1016/j.serj.2018.07.003


Gate-to-Gate Life Cycle Assessment for Determining Carbon Footprint of Catalytic Converter Assembly Process

Sustainability has been an integral part of global automotive manufacturing processes, with the aim of embracing the circular economy, increasing vehicle sales, and environmental issues. The Catalytic Converter, a key component of a vehicle body, has been tested for remanufacturability for the past few decades, but it has still remains unfocused in literature. Real life reports are obtained from a local Malaysian CC company. With significant emission coming from the plasma arc welding, the welding section has a carbon footprint of 0. 203 kgCO2e/unit according to the published findings. In addition to that, it has been also found that the value of carbon footprint is not limited to the emission factor and processing time, but also responds to the processing operations' nature.

Source link: https://doi.org/10.26776/ijemm.02.01.2017.03

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions