Rare Earth-Modified Kaolin/NaY-Supported Pd–Pt Bimetallic Catalyst for the Catalytic Combustion of Benzene

Zuo, Shufeng; Sun, Xuejie; Lv, Ningning; Qi, Chenze

doi:10.1021/am500138q

Cited by 36 publications

(21 citation statements)

References 57 publications

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“…1,[33][34][35][36][37][38]43 To some extent, an agreement between the simulation and experimental data was achieved. 1,[33][34][35][36][37][38]43 To some extent, an agreement between the simulation and experimental data was achieved.…”

Section: Introductionmentioning

confidence: 55%

Reactive molecular dynamics simulation of the pyrolysis and combustion of benzene: ultrahigh temperature and oxygen-induced enhancement of initiation pathways and their effect on carbon black generation

Dong

Fan

et al. 2015

RSC Adv.

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The pyrolysis and combustion mechanisms of benzene under different chemical environments and temperatures were investigated by a reactive force field based molecular dynamics (ReaxFF MD) simulation using two systems, pure benzene and a mixture of benzene and oxygen gas. The chemical behaviors of this system were investigated under an ultrahigh temperature that can be induced by a high-energy density laser and compared to those at high temperature. According to some experimental data, we assume that an ultrahigh temperature can be used to mimic laser irradiation. The conclusions of this simulation are as follows. First, the ReaxFF MD simulations showed that the decomposition rates of benzene were significantly accelerated by laser irradiation or in the presence of oxygen. Second, additional initiation pathways were opened up by these two factors. The primary initiation pathway involves only the hydrogen atom loss in the pyrolysis of benzene at 3000 K, and the initiation pathways become much more complicated after laser irradiation or the involvement of oxygen. Third, the ReaxFF MD simulations formed a reasonable carbon black (CB) texture of various sizes in the pyrolysis of benzene, and we also focused on the evolution of the texture of CB. The calculation results of the final gaseous products, hydrocarbons, and the formation of CB are in a good agreement with the literature.This study provides a better understanding of the initiation mechanisms of the pyrolysis and combustion of benzene under extreme conditions.

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Section: Introductionmentioning

confidence: 55%

Reactive molecular dynamics simulation of the pyrolysis and combustion of benzene: ultrahigh temperature and oxygen-induced enhancement of initiation pathways and their effect on carbon black generation

Dong

Fan

et al. 2015

RSC Adv.

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“…Hutchings et al investigated the oxidation of toluene over the Au-Pd catalysts and demonstrated that the Au acted as an electronic promoter for Pd (Enache et al, 2006;bin Saiman et al, 2012). The complete conversion of benzene could be achieved at approximately 230°C owing to the enhancement of the oxidation properties over Pd catalysts with the addition of Ce and Pt (Zuo et al, 2014). Researchers have attempted to improve low-temperature activity and stability of Pd-supported catalysts through introducing non-noble metals to the catalysts, concerning the high cost and the rare supply of the noble metals.…”

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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“…Generally, kaolin is used as additives in ceramics, rubber, paper as well as used as catalytic applications . Given the abundancy and cost‐efficiency, it has recently attracted great attention in and water treatment catalyst support …”

Section: Introductionmentioning

confidence: 99%

“…[2,3] Given the abundancy and cost-efficiency, it has recently attracted great attention in and water treatment catalyst support. [4][5][6] Kaolinite, often found as coal-bearing kaolin, is a companion clay in many coal mines found in Inner Mongolia region of China. According the Mining Bureau of the United States of the interior, the estimated global reserves of kaolin is proven to be around 12.2 billion tons.…”

Section: Introductionmentioning

confidence: 99%

Environmentally Friendly Treatment of Coal‐Bearing Kaolin by Polyhydroxy‐Iron for Anionic Dye Removal

et al. 2019

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Clay material such as kaolin is considered great candidate in industrial water treatment due to its structural properties and abundancy. However, material treatment procedures aimed for adsorption efficiency improvement are generally energy consuming and causes secondary environment contaminations. In the present study, a cost‐effective kaolin modification technique based on polyhydroxy‐iron (PHFe(III)) treatment is applied to coal‐bearing kaolin clay (KC). The modified adsorbent (PHFe(III)/KC) shows a two fold increase in specific surface area and renders a 75 mg/g Congo Red (CR) dye uptake amount which significantly outperforms that of the raw KC (∼12 mg/g). Importantly, the modification process involves mild heating and gentle chemical reaction which is environmental benign, especially under large scale adsorbent treatment. The effect of the PHFe(III)/KC preparation conditions, adsorption time, the initial solution pH and the initial concentration of CR on the adsorption capacity of the adsorbents was investigated. Adsorbent characterization shows successful grafting of PHFe(III) which likely changes the surface property and increases the affinity between the adsorbent and organic dyes. The comparatively high dye adsorption capability and good regeneration shows promising application of PHFe(III)/KC in industrial waste water treatment.

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Rare Earth-Modified Kaolin/NaY-Supported Pd–Pt Bimetallic Catalyst for the Catalytic Combustion of Benzene

Cited by 36 publications

References 57 publications

Reactive molecular dynamics simulation of the pyrolysis and combustion of benzene: ultrahigh temperature and oxygen-induced enhancement of initiation pathways and their effect on carbon black generation

Reactive molecular dynamics simulation of the pyrolysis and combustion of benzene: ultrahigh temperature and oxygen-induced enhancement of initiation pathways and their effect on carbon black generation

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

Environmentally Friendly Treatment of Coal‐Bearing Kaolin by Polyhydroxy‐Iron for Anionic Dye Removal

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