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Supplier: SAE International
Description: formed with metal ion exchanged zeolite (NCH: New Concept Honeycomb) and for comparison a wash-coat type structure (conventional catalyst) were prepared. The possible range of catalyst volume reduction in NCH was investigated by comparative measurement of NH\u2083 adsorption
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Supplier: SAE International
Description: SCRF backpressure. Reaction gas exposure at 450°C completely regained the NOx conversion without regenerating the soot and without gaining backpressure relief. Similarly to the soot-loaded experiments, coke generated from propylene exposure negatively affected NOx conversion for both
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Supplier: SAE International
Description: SCR based NH 3 reduction strategy that results in an overall reduction of NH 3 as well as NOx emissions from a stoichiometric spark ignited natural gas engine. The study investigated the characteristics of Fe-based and Cu-based zeolite SCR catalysts in storage, and desorption of
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Supplier: SAE International
Description: The integration of DeNO x functionality into wall flow filters for the after treatment of diesel engine exhaust gases is a field of technology to which many publications in the recent years have drawn their attention. To integrate the needed amount of catalyst, high porous substrate
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Mesoporous zeolites as efficient catalysts for oil refining and natural gas conversion
Table 1 Catalytic activities in isomerization of linear paraffins over mesoporous zeolite catalysts Substrates .
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Ethylene Carbonate from Ethylene Oxide
In former case, cesium-based catalysts on zeolite substrate are cited for the carbonylation reaction, which is carried out in a fixed-bed reactor at 100°C and 1.7-2.4 MPa.
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Bio-Based Adipic Acid
BASF has patented the standard approach (USP 4543427, 24-Sep-1985), using cobalt oxide catalyst on zeolite substrate technology rather than chromium oxide.
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Heterogenized Homogeneous Catalysts for Fine Chemicals Production
Table 2.2 Catalytic performances of amino acid based catalysts encapsulated in zeolites Substrate .
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A review of plasma enhanced chemical vapour deposition of carbon nanotubes
When the plasma is extracted through a hole in the bottom electrode and with the substrate located further below, these authors were able to grow SWCNTs using thin Fe films as catalyst without any zeolite substrate [109].
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Solid Acid Catalysts for Coumarin Synthesis by the Pechmann Reaction: MOFs versus Zeolites
As can be seen, for both zeolite catalysts the conversions of substrates increased in the expected order, as a result of their reactivity: .
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Development of a Numerical Model to Predict the Impact of Phosphorus on Flow through Aftertreatment Components
While the results presented in this paper are for diesel oxidation catalysts and copper zeolite catalysts coated on cordierite substrates , other core materials and other catalyst formulations were also tested and used for model development and validation.
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Urea-SCR Technology for deNOx After Treatment of Diesel Exhausts
Zeolite catalyst : gray; substrate /filter material: white; open pores: black .
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Carbon monoxide hydrogenation over Fe/HZSM-5 catalysts. Effect of SiO2 /Al2 O3 zeolite ratio
This phenomenon may be explained in terms of the greater participation of coke deposition resulting from the higher olefinic fraction on this catalyst , since the zeolite substrate is the most acidic of the series.
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Development of Catalyst for Recovery of Tritium
With this background, the authors conducted test fabrication of noble metal catalysts of which substrates are zeolites .