A Review on the Pd-Based Three-Way Catalyst

Wang, Jihui; Chen, Hong; Hu, Zhicheng; Yao, Mingfa; Li, Yongdan

doi:10.1080/01614940.2014.977059

Cited by 264 publications

(142 citation statements)

References 181 publications

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“…The primary reason for the usage of Pd over other noble metals is its ϴ availability and relative lower cost (Wang et al, 2014). CO oxidation has been studied over palladium surfaces ranging from metal single crystals (Conrad et al, 1974(Conrad et al, ,1977Ertl, 1978, 1979;Szanyi et al, 1993;Xu and Goodman, 1993;Xu et al, 1994) to impregnated metals (Kang et al, 2014;Satsuma et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Mandapaka

Madras

2015

Chemical Engineering Science

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Section: Introductionmentioning

confidence: 99%

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Mandapaka

Madras

2015

Chemical Engineering Science

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“…These processes naturally lead to a diminished active surface area and a total number of active sites per mass unit (of catalyst). While synthesis projects and publications generally aim at both; generating and sustaining active surface sites, at least a basic understanding of reaction mechanisms (e. g. structure‐activity‐ and structure‐stability‐correlations) is crucial and represents a second research topic in current and past literature on organic and inorganic reactions and applied surface science . As will be addressed throughout this manuscript, the Laser Synthesis and Processing of Colloids (LSPC) technique became a valuable method for the production of novel functional materials and model catalysts used in a broad field of research and applications .…”

Section: Introductionmentioning

confidence: 99%

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

et al. 2019

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Due to material gaps and synthesis‐related cross‐correlations in heterogeneous catalysis, chemists and physicists are constantly motivated to develop novel catalyst preparation methods for independent control of morphology, size, and composition. Within this article, advances, opportunities, and the current limits of laser‐based catalyst preparation technique, as well as synergies with conventional methods will be reviewed in terms of purity, particle size, morphology, composition, and nanoparticle‐support interaction. It will be shown, that the surfactant‐free particles represent ideal model materials to validate kinetic models and conduct parametric activity studies by independent adjustment of functional properties like nanoparticle size, composition, and load. Consequently, the importance of transient plasma dynamics tailoring nanoparticle formation will be pointed out, comparing experimental studies with own calculations and novel simulations taken from literature. Finally, perspectives of surfactant‐free colloidal nanoparticles for unrevealing active sites in heterogeneous catalysts are presented.

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“…Complete oxidation of CH 4 in the NGV exhaust gas is a challenge because the CH 4 concentration is low (<0.1 vol%) and the oxidation must be done at relatively low NGV exhaust gas temperatures (<500°C) in the presence of large quantities of CO 2 and H 2 O (up to 10 vol%) . Commercial Pt/Pd catalysts show a high activity for CH 4 oxidation at low temperatures; however, they are unstable in the presence of H 2 O . Several studies have reported on the loss in catalyst CH 4 oxidation activity in the presence of water that has been ascribed to competitive adsorption and decreased O‐transfer to PdO‐Pd* site pairs in the presence of water …”

Section: Introductionmentioning

confidence: 99%

Beneficial effect of adding γ‐AlOOH to the γ‐Al₂O₃ washcoat of a PdO catalyst for methane oxidation

AlMohamadi

Smith

2019

Can J Chem Eng

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The beneficial effect of adding γ‐AlOOH to the γ‐Al2O3 washcoat of a ceramic cordierite (2MgO · 2Al2O3 · 5SiO2) monolith, used to support a PdO catalyst, is reported for methane oxidation in the presence of water at low temperature (<500°C). The mini‐monolith (400 cells per square inch (CPI), 1 cm diameter × 2.54 cm length; ~52 cells) was washcoated using a suspension of γ‐Al2O3 plus boehmite (γ‐AlOOH), followed by calcination and then deposition of Pd by wet impregnation. An optimum solid content of 25 wt% in the washcoat suspension was used to obtain a ~25 wt% washcoat on the monolith. The presence of γ‐AlOOH enhanced the thermal and mechanical stability of the washcoat, provided that the γ‐AlOOH content was <8 wt%. Temperature‐programmed methane oxidation (TPO) showed that the addition of γ‐AlOOH to the γ‐Al2O3 washcoat decreased the catalyst activity. However, when H2O (2 vol% and 5 vol%) was present in the feed gas, the γ‐AlOOH improved the catalyst activity and stability. A γ‐AlOOH content of ~5 wt% in the washcoat was determined to provide the highest catalyst activity and stability for CH4 oxidation in the presence of water.

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A Review on the Pd-Based Three-Way Catalyst

Cited by 264 publications

References 181 publications

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

Beneficial effect of adding γ‐AlOOH to the γ‐Al₂O₃ washcoat of a PdO catalyst for methane oxidation

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A Review on the Pd-Based Three-Way Catalyst

Cited by 264 publications

References 181 publications

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Kinetics of CO oxidation on palladium using microkinetics coupled with reaction route analysis

Perspective of Surfactant‐Free Colloidal Nanoparticles in Heterogeneous Catalysis

Beneficial effect of adding γ‐AlOOH to the γ‐Al2O3 washcoat of a PdO catalyst for methane oxidation

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Beneficial effect of adding γ‐AlOOH to the γ‐Al₂O₃ washcoat of a PdO catalyst for methane oxidation