Catalytic Automotive Pollution Control Without Noble Metals

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

doi:10.1016/s0167-2991(08)62988-2

Cited by 12 publications

(27 citation statements)

References 18 publications

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“…The CO oxidation experiments were performed in an apparatus consisting of a gas-mixing section, a quartz reactor, and a dual-column gas chromatograph to separate mixtures of CO, O,, N,O, N2, NO and CO,, as described in detail elsewhere (Stegenga, 1991). The reactor (ID = 5.0 mm) was surrounded by an aluminum cylinder, which contained the thermocouple to control the oven temperature.…”

Section: Apparatusmentioning

confidence: 99%

“…With still increasing demands, together with decreasing sulfur levels in gasoline fuels, base metal catalysts become attractive as alternative. Recently, we reported the promising three-way behavior of copper-based catalysts (Stegenga et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

“…The total composition of the reaction mixture will strongly determine the state of the catalyst at the surface. Especially base metals are quite sensitive to reducing or oxidizing conditions and may change considerably in activity (Severino and Laine, 1983; Stegenga et al, 1991). Therefore, this competition of the reactants has to be taken into consideration, since the individual modeling of reactions will not necessarily predict the simultaneous behavior properly.…”

Section: Introductionmentioning

confidence: 99%

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Kinetics of the CO oxidation by O₂ and N₂O over Cu‐Cr/Al₂O₃

et al. 1992

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Section: Apparatusmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Kinetics of the CO oxidation by O₂ and N₂O over Cu‐Cr/Al₂O₃

et al. 1992

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“…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%

“…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%

Applications and Preparation Methods of Copper Chromite Catalysts: A Review

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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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