Catalysts for automobile emission control

Kummer, J. T.

doi:10.1016/0360-1285(80)90006-4

Cited by 316 publications

(131 citation statements)

References 54 publications

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“…Mechanisms of catalyst deactivation have been reviewed by Bartholomew [237]. SO2 can be severe inhibitor for the oxidation of CO and hydrocarbons [238] in the temperature range (400-600 0 C) of use of base metal catalysts in automobiles. Kim et al [239] studied the deactivation of supported copper chromite catalyst by SO2 and water vapour and found that the degree of deactivation of the catalyst due to SO2 was more severe than water vapour.…”

Section: Oxidation Of Carbon Monoxidementioning

confidence: 99%

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Прасад

2011

Bull. Chem. React. Eng. Catal.

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In this review article various applications and preparation methods of copper chromite catalysts have been discussed. While discussing it is concluded that copper chromite is a versatile catalyst which not only catalyses numerous processes of commercial importance and national program related to defence and space research but also finds applications in the most concerned problem worldwide i.e. environmental pollution control. Several other very useful applications of copper chromite catalysts are in production of clean energy, drugs and agro chemicals, etc. Various preparation methods about 15 have been discussed which depicts clear idea about the dependence of catalytic activity and selectivity on way of preparation of catalyst. In view of the globally increasing interest towards copper chromite catalysis, reexamination on the important applications of such catalysts and their useful preparation methods is thus the need of the time. This review paper encloses 369 references including a well-conceivable tabulation of the newer state of the art.

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Section: Oxidation Of Carbon Monoxidementioning

confidence: 99%

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Прасад

2011

Bull. Chem. React. Eng. Catal.

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“…Precious metals are indispensable metal elements in modern industries, particularly in the automotive industry, petrochemical and bio fuel processes [1][2]. However, the natural abundance of precious metals is extremely small and they exist in limited locations [3].…”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction Behavior of Divalent Palladium Ion with Phenylurea Derivative of Trident Molecule

Ueda

Morisada

Kawakita

et al. 2014

SERDJ

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A phenylurea derivative of a trident molecule has been prepared as a novel solvent extraction reagent for precious metal ions to compare the extraction ability of precious and base metals with the corresponding monopodal analogue in nitrate media. The phenylurea type of trident extraction reagent exhibited extractive selectivity for palladium over other precious and base metals in nitrate media. The extraction ability of the trident extraction reagent for palladium was superior to that of the monopodal analogue. The extraction mechanism of palladium with the trident extraction reagent was determined by slope analysis and from the peak shift for the FT-IR and 1 H-NMR spectra of the extraction reagent before and after metal loading.Stripping from the organic phase after forward extraction was carried out to separate palladium and silver.

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“…NO x emission in a Diesel engine can be controlled either by modification of the combustion process or by the treatment of exhaust gases [14]. In the former method retardation of fuel injection timing, Exhaust Gas Recirculation (EGR), fuel additives and water injection techniques are employed to prevent the NO x formation [15] while the latter method was carried out with the help of different catalysts to remove NO x emission completely [16][17][18][19][20]. Of the two methods the combustion process modification is comparatively cheaper [14] and the same has been discussed in this work.…”

Section: Introductionmentioning

confidence: 99%

Multi Response Optimization of NO_xEmission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl Ester

Saravanan

Nagarajan²,

Sampath³

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Optimisation à réponses multiples de l'émission de NO x d'un moteur Diesel stationnaire alimenté par de l'ester méthylique d'huile de riz brut -Dans la présente étude, il a été tenté de réduire les émissions de NO x de l'ester méthylique d'huile de riz brut sans accroissement considérable de la densité de fumée lorsqu'il est utilisé comme carburant dans un moteur stationnaire à allumage par compression. Trois facteurs, à savoir le calage d'injection de carburant, le pourcentage de recirculation des gaz d'échappement (EGR ; Exhaust Gas Recirculation) et la pression d'injection de carburant ont été choisis, et leur effet combiné a été examiné en matière de maîtrise des émissions de NO x d'un moteur Diesel stationnaire alimenté avec de l'ester méthylique d'huile de riz brut. Trois niveaux ont été choisis pour chaque facteur et les émissions de NO x , la densité de fumée ainsi que le rendement thermique au frein ont été retenus en tant que variables de réponse. Les expériences ont été conçues en employant la méthode des plans d'expériences et la table orthogonale L 9 de Taguchi a été utilisée pour conduire les essais moteurs selon différents niveaux des facteurs choisis. Le Rapport Signal-Bruit de Réponses Multiples (RSBRM) a été calculé pour les variables de réponse et le niveau de combinaison optimum des facteurs a été obtenu en utilisant simultanément la conception paramétrique de Taguchi. Une expérience de confirmation a été menée pour le niveau de combinaison optimum des facteurs, puis les résultats ont été comparés avec les conditions de fonctionnement normal et une amélioration significative des variables de réponse a été observée. Abstract -Multi Response Optimization of NO x Emission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl Ester

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Catalysts for automobile emission control

Cited by 316 publications

References 54 publications

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Solvent Extraction Behavior of Divalent Palladium Ion with Phenylurea Derivative of Trident Molecule

Multi Response Optimization of NO_xEmission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl Ester

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Catalysts for automobile emission control

Cited by 316 publications

References 54 publications

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Solvent Extraction Behavior of Divalent Palladium Ion with Phenylurea Derivative of Trident Molecule

Multi Response Optimization of NOxEmission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl Ester

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Multi Response Optimization of NO_xEmission of a Stationary Diesel Engine Fuelled with Crude Rice Bran Oil Methyl Ester