Alternatives to Noble Metal Catalysts for Automotive Exhaust Purification

Kapteijn, Freek; Stegenga, S.; Dekker, N.J.J.; Bijsterbosch, Jowi W.; Moulijn, Jacob A.

doi:10.1016/0920-5861(93)85024-t

Cited by 74 publications

(51 citation statements)

References 16 publications

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“…Cu-Cr catalyst system has been studied extensively for reactions such as the oxidation of CO [217], hydrocarbons [213], alcohols and aldehydes [218], sulfurated hydrocarbons [219], and chlorinated hydrocarbons [220] as well as NO reduction [214]. Kapteijn et al [214] reported that Cu-Cr catalysts showed higher CO oxidation and NO reduction activity than single oxide catalysts based on Cu, Ni, Co, Fe, Mn, Cr.…”

Section: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

“…Kapteijn et al [214] reported that Cu-Cr catalysts showed higher CO oxidation and NO reduction activity than single oxide catalysts based on Cu, Ni, Co, Fe, Mn, Cr. Stegenga et al [212] have found that a monolith-supported 10 wt% Cu.Cr/Al2O3 catalyst showed a three-way catalytic activity comparable to that of noble metal catalysts operated under the same conditions.…”

Section: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

“…Although noble metal-based catalysts have dominated this area, efforts were always put in towards development of low cost non-noble metalbased catalysts [209] and modification of TWC to decrease precious metal percentages by means of nanotechnologies [210] and in combination with base metals [211]. Among such catalysts copper chromite has been observed to be an attractive alternative to presently used noble metals in view of availability, lower cost and comparable activity [212][213][214][215][216]9] for purification of vehicular exhaust.…”

Section: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

“…Cherkezova-Zheleva et al [282] reported total oxidation of CO, dimethyl ether and methanol over copper chromite catalysts supported on γ-Al2O3. Copper chromite catalysts were evaluated by Heyes et al [214] for the control of organic air pollutants responsible for malodorous process emissions. In laboratory tests, catalyst shows the ability to achieve and maintain high efficiency for the complete oxidation of n-…”

Section: Bulletin Of Chemical Reaction Engineering and Catalysismentioning

confidence: 99%

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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: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

Section: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

Section: Purification Of Spark Ignited Engine Exhaustmentioning

confidence: 99%

Section: Bulletin Of Chemical Reaction Engineering and Catalysismentioning

confidence: 99%

See 2 more Smart Citations

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Прасад

2011

Bull. Chem. React. Eng. Catal.

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“…Platinum (Pt) is a common material in catalyst industries such as purification of engine exhaust, production of fuel cell electrodes, and modification of photocatalysts [7][8][9]. However, Pt is scarce and expensive; therefore it is necessary to reduce the consumption of Pt by making nano-sized structures on the surface to enable have high performance and by developing alternative materials.…”

Section: Introductionmentioning

confidence: 99%

Morphology Changes of Platinum and Tungsten Carbide by He Plasma Irradiation

Tomita

Kajita

Ohno

et al. 2018

Plasma and Fusion Research

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Fuzz nanostructure formation on metal by helium plasma irradiation has potential in industrial application due to the increasing in surface area. We have investigated the influence on the surfaces of platinum and tungsten carbide by helium plasma irradiation. On tungsten carbide, fuzz nanostructure was formed when the surface temperature was higher than 1000 K. However, when helium irradiation was conducted at the surface temperature of 940 K or higher, tungsten carbide changed to W possibly because of radiation enhanced sublimation. On platinum, fuzz nanostructure was formed when the surface temperature was in the range of 800 -1000 K and the fluence was on the order of 10 26 m −2 . The nanostructure formation mechanism of platinum should be similar to that of tungsten, but incubation fluence of platinum was higher and the growth rate of fuzzy layer was likely to be lower than those of tungsten.

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Auto Exhaust Catalysis

Heck

Frrauto

2010

Encyclopedia of Catalysis

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A brief history and current review of the use of monolithic catalysts used to abate carbon monoxide, hydrocarbons, and oxides of nitrogen emissions from gasoline‐fueled internal combustion engines using‐three way catalytic converters is presented. Abatement of gaseous and particulate matter (soot) from diesel‐fueled internal combustion engines using diesel oxidation catalysts, catalysts for the selective reduction of NO x , and soot removal using wall flow filters is presented.

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Alternatives to Noble Metal Catalysts for Automotive Exhaust Purification

Cited by 74 publications

References 16 publications

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

Morphology Changes of Platinum and Tungsten Carbide by He Plasma Irradiation

Auto Exhaust Catalysis

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