Me-ZSM-5 monolith foams for the NH 3 -SCR of NO

Gargiulo, Nicola; Caputo, Domenico; Totarella, Giorgio; Lisi, L.; Cimino, Stefano

doi:10.1016/j.cattod.2017.10.024

Cited by 21 publications

(17 citation statements)

References 30 publications

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“…The probable reason is the considerable enhancement of active site accessibility [16]. Toluene adsorption was conducted by IGA analysis on the different In pore size distribution curves (Figure 6c), both ZF&ZF-D (ZFs as short below) and ZSM-5&ZSM-5-D (ZSM-5s as short below) had the highest intensity peaks in the micropores range of below 1 nm, which corresponded to the MFI zeolite structure [41]. Microporous distribution of ZFs with a relatively intensive peak was centered in 0.75 nm, which was close to the diameter of toluene (ca.…”

Section: The Mechanism Of Toluene Diffusion In the Hierarchical Poroumentioning

confidence: 99%

Catalytic Performance of Toluene Combustion over Pt Nanoparticles Supported on Pore-Modified Macro-Meso-Microporous Zeolite Foam

Zou

Zhang

et al. 2019

Nanomaterials

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Herein, to investigate the pore effect on toluene catalytic oxidation activity, novel supports for Pt nanoparticles-ZSM-5 foam (ZF) fabricated using polyurethane foam (PUF) templates and pore-modified ZSM-5 foam (ZF-D) treated by acid etching, comparing with conventional ZSM-5 and pore-modified ZSM-5 (ZSM-5-D), were successfully synthesized. Pt nanoparticles were loaded on series ZSM-5 supports by the impregnation method. The Pt loaded on ZF-D (Pt/ZF-D) showed the highest activity of toluene catalytic combustion (i.e., T 90 = 158 • C), with extraordinary stability and an anti-coking ability. Based on various catalysts characterizations, the unique macropores of ZF facilitated the process of acid etching as compared to conventional ZSM-5. The mesopores volume of ZF-D significantly increased due to acid etching, which enlarged toluene adsorption capacity and led to a better Pt distribution since some Pt nanoparticles were immobilized into some mesopores. Specifically, the microporous distribution was centered in the range of 0.7-0.8 nm close to the molecular diameter of toluene (ca. 0.67 nm), which was key to the increasing toluene diffusion rate due to pore levitation effect of catalysts and accessibility of metal. Furthermore, the reducibility of Pt nanoparticles was improved on Pt/ZF-D, which enhanced the activity of toluene catalytic oxidation.

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Section: The Mechanism Of Toluene Diffusion In the Hierarchical Poroumentioning

confidence: 99%

Catalytic Performance of Toluene Combustion over Pt Nanoparticles Supported on Pore-Modified Macro-Meso-Microporous Zeolite Foam

Zou

Zhang

et al. 2019

Nanomaterials

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“…The catalytic tests were carried out in a lab-scale fixed bed tubular quartz reactor (10 mm internal diameter) placed in a tubular furnace and operated in the temperature range 90-550 • C as described in [14,29], using 0.125 mg of powdered catalyst (125-200 µm particle diameter).…”

Section: Selective Catalytic Reduction Of Nomentioning

confidence: 99%

A Case Study for the Deactivation and Regeneration of a V2O5-WO3/TiO2 Catalyst in a Tail-End SCR Unit of a Municipal Waste Incineration Plant

et al. 2019

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In this work, we set out to investigate the deactivation of a commercial V2O5-WO3/TiO2 monolith catalyst that operated for a total of 18,000 h in a selective catalytic reduction unit treating the exhaust gases of a municipal waste incinerator in a tail end configuration. Extensive physical and chemical characterization analyses were performed comparing results for fresh and aged catalyst samples. The nature of poisoning species was determined with regards to their impact on the DeNOx catalytic activity which was experimentally evaluated through catalytic tests in the temperature range 90–500 °C at a gas hourly space velocity of 100,000 h−1 (NO = NH3 = 400 ppmv, 6% O2). Two simple regeneration strategies were also investigated: thermal treatment under static air at 400–450 °C and water washing at room temperature. The effectiveness of each treatment was determined on the basis of its ability to remove specific poisoning compounds and to restore the original performance of the virgin catalyst.

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“…Honeycomb monolithic catalysts can have a pressure drop up to two orders of magnitude lower than packed beds, exhibit high geometric surface area, and possess mechanical strength and durability. 36 Examples include CH 4 reforming and partial oxidation [37][38][39] CH 4 oxidative coupling, 40 selective reductions and hydrogenations, [41][42][43] Fischer-Tropsch Process, 44 volatile organic compounds (VOC) abatement. 45,46 Another concept of monolithic reactor is the in-line-monolithic reactor (ILMR) 47 (Fig.…”

Section: Multiple Microchannels and Mesoscale Catalytic Reactorsmentioning

confidence: 99%

Process Intensification and Catalysis

Boffito

Gerven

2019

Reference Module in Chemistry, Molecular Sciences and Chemical Engineering

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This article was published in the Elsevier Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, and the attached copy is provided by Elsevier for the author's benefit and for the benefit of the author's institution, for non-commercial research and educational use including without limitation use in instruction at your institution, sending it to specific colleagues who you know, and providing a copy to your institution's administrator.

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Me-ZSM-5 monolith foams for the NH 3 -SCR of NO

Cited by 21 publications

References 30 publications

Catalytic Performance of Toluene Combustion over Pt Nanoparticles Supported on Pore-Modified Macro-Meso-Microporous Zeolite Foam

Catalytic Performance of Toluene Combustion over Pt Nanoparticles Supported on Pore-Modified Macro-Meso-Microporous Zeolite Foam

A Case Study for the Deactivation and Regeneration of a V2O5-WO3/TiO2 Catalyst in a Tail-End SCR Unit of a Municipal Waste Incineration Plant

Process Intensification and Catalysis

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