Mo-modified Pd/Al2O3 catalysts for benzene catalytic combustion

He, Zhanfeng; He, Zhanrong; Wang, Dan; Bo, Qifei; Fan, Ting; Jiang, Yi

doi:10.1016/j.jes.2014.05.014

Cited by 17 publications

(3 citation statements)

References 30 publications

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“…The high water-resistant ability of the supported Pd−W bimetallic catalysts was ascribed to the presence of the facile redox cycle of the active Pd 2+ /Pd 0 couple (Liang et al, 2019). The addition of Mo in Pd/Al 2 O 3 catalyst efficiently improved the activity and stability by increasing the Pd dispersion and changing the partial PdO (He et al, 2014). With the introduction of NiO, the activity of Pd/SBA-15 was greatly improved on account of the strong synergistic effect of PdO-NiO (Tang et al, 2017).…”

Section: Alloyed Nanoparticle Catalystsmentioning

confidence: 99%

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Song

Zhang

et al. 2020

Front. Mater.

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Volatile organic compounds (VOCs) are poisonous and regarded as the paramount source for the formation of secondary organic aerosols, ozone, and photochemical smog, greatly affecting human health and environment quality. In order to abate VOC emission, catalytic oxidation is widely applied in industries and is believed to be an efficient and economically feasible way for the elimination of VOCs. This review is primarily concentrated on summarizing the recent progress and developments in the catalytic oxidation of various VOCs over Pd-supported catalysts. Despite their high catalytic performances at much lower temperatures, the wide use of Pd-supported catalysts in the industry has been limited by their high cost, low thermal stability, and incomplete oxidation of VOCs. Hence, the intrinsic properties of the active sites and supports, the reaction conditions, the deactivation mechanism, and the strategy to reveal the catalytic oxidation pathway are also systematically summarized. This review aims to give a deep comprehension and guidance for the development of efficient and cost-effective Pd-supported catalysts in the near future.

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Section: Alloyed Nanoparticle Catalystsmentioning

confidence: 99%

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Song

Zhang

et al. 2020

Front. Mater.

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“…The addition of transition metals effectively improves the activity of Pd catalysts. For example, Pd-Au, − Pd-Zn, − Pd-Mo, − and Pd–Cu catalysts − have been reported to exhibit higher activity than Pd catalysts. The addition of transition metals changes the electronic state of Pd and improves its dispersion, which in turn alters the reactivity of the substrate, resulting in increased activity.…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidation of CO to CO₂ over CeO₂-Supported Pd–Cu Catalysts under Dilute O₂ Conditions

Shigenobu

Hōjō

Einaga

2022

Ind. Eng. Chem. Res.

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Catalytic CO oxidation processes under dilute oxygen conditions are key industrial and environmental processes. CeO2-supported Pd and Pd–Cu catalysts (Pd/CeO2 and Pd–Cu/CeO2) were prepared by impregnation, and the effect of Cu addition on the catalytic properties of CO oxidation was investigated under CO/O2 stoichiometric conditions. The activity of Pd/CeO2 was superior to that of Pd/TiO2 and Pd/Al2O3 at low temperatures. The Cu addition to Pd/CeO2 with a Cu/Pd molar ratio of approximately 1–5 enhanced the CO oxidation activity. Small PdO particles were distributed over the CeO2 surfaces, and Cu addition decreased the size of the Pd particles on the CeO2 and increased the fraction of highly reactive Pd sites. As the Cu/Pd mole fraction in the Pd–Cu/CeO2 catalyst increased to 10, the PdO on CeO2 agglomerated significantly, and the CO oxidation activity decreased.

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“…87-0639)[36]. The combustion catalyst showed characteristic reflections of Al 2 O 3 at values 2θ = 19.4, 32.0, 37.7, 45.9 and 67.0 • (PDF 79-1558)[37], and the reflections at 2θ = 33.8 and 54.7 • (PDF 41-1107) were attributed to PdO[37]. The impregnation with Pd and the calcination did not modify the crystalline properties of the support.…”

mentioning

confidence: 96%

Design and Test of a Miniature Hydrogen Production Integrated Reactor

et al. 2021

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A detailed study of the experimental issues involved in the design and operation of a methanol steam microreformer is presented in this paper. Micromachining technology was utilized to fabricate a metallic microchannel block coupling the exothermic and endothermic process. The microchannel block was coated with a Pd/ZnO catalyst in the reforming channels and with Pd/Al2O3 in the combustion channels by washcoating. An experimental system had been designed and fine-tuned allowing estimation of the heat losses of the system and to compensate for them by means of electric heating cartridges. In this way, the heat necessary for the reforming reaction is provided by methanol combustion, thanks to the temperature and flow cascade controller we developed. Thus, the coupling of both reactions in a block of microchannels without the interference caused by significant heat loss due to the small size of the laboratory microreactor could be studied. Runs of this microreformer device were carried out, varying the deposited catalyst amount, methanol steam reforming temperature and space velocity. When the reforming reaction was compensated by the combustion reaction and the heat losses by the electric heating, an almost isothermal behavior of the microchannel reactor was observed. In the less favorable case, with a 460 mg catalyst load, ΔTMSR was about 8 K and ΔTCOMB was about 16 K. This confirmed good coupling of the methanol steam reforming and the methanol combustion.

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Mo-modified Pd/Al2O3 catalysts for benzene catalytic combustion

Cited by 17 publications

References 30 publications

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Catalytic Oxidation of CO to CO₂ over CeO₂-Supported Pd–Cu Catalysts under Dilute O₂ Conditions

Design and Test of a Miniature Hydrogen Production Integrated Reactor

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Mo-modified Pd/Al2O3 catalysts for benzene catalytic combustion

Cited by 17 publications

References 30 publications

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Advances in Catalytic Oxidation of Volatile Organic Compounds over Pd-Supported Catalysts: Recent Trends and Challenges

Catalytic Oxidation of CO to CO2 over CeO2-Supported Pd–Cu Catalysts under Dilute O2 Conditions

Design and Test of a Miniature Hydrogen Production Integrated Reactor

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Product

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Catalytic Oxidation of CO to CO₂ over CeO₂-Supported Pd–Cu Catalysts under Dilute O₂ Conditions