Understanding the Deactivation of Ag−ZrO2/SiO2 Catalysts for the Single‐step Conversion of Ethanol to Butenes
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DOI: 10.1002/cctc.202001488
Abstract: Ag−ZrO2/SBA‐16 has recently been found to be efficient for catalyzing the single‐step conversion of ethanol to butene (1‐ and 2‐butene mixtures) in the presence of H2. The reaction proceeds via a cascading sequence of reactions… read more here.
Keywords: deactivation; step conversion; zro2; conversion ... See more keywords
Challenges of green FDCA production from bio-derived HMF: Overcoming deactivation by concomitant amino acids.
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DOI: 10.1002/cssc.202200418
Abstract: The oxidation of 5-(hydroxymethyl)furfural (HMF) to 2,5-furandicarboxylic acid (FDCA) is highly attractive as FDCA is considered as substitute for the petrochemically derived terephthalic acid. There are only few reports on the direct use of unrefined… read more here.
Keywords: deactivation; amino acids; green fdca; challenges green ... See more keywords
A Deactivation Factor of Fibrogenic Hepatic Stellate Cells Induces Regression of Liver Fibrosis in Mice
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DOI: 10.1002/hep.30965
Abstract: Hepatic stellate cells (HSCs), a key player in the progression of liver fibrosis, are activated by various inflammatory stimuli and converted to myofibroblast‐like cells with excessive collagen production. Despite many attempts to suppress activation of… read more here.
Keywords: fibrosis; liver fibrosis; deactivation; hepatic stellate ... See more keywords
Kinetic Study of Dry Reforming of Methane Over Ni–Ce/Al2O3 Catalyst with Deactivation
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DOI: 10.1007/s11244-019-01157-2
Abstract: A kinetic study for dry reforming of methane over Ni–Ce/Al2O3 catalyst was performed, taking into account both the main reactions and the catalyst deactivation. The catalyst was prepared by a sequential wet impregnation process, with… read more here.
Keywords: dry reforming; reforming methane; study dry; deactivation ... See more keywords
On the deactivation of Ni-Al catalysts in CO2 methanation
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DOI: 10.1016/j.apcata.2018.10.033
Abstract: Abstract This work provides detailed knowledge of long-term deactivation of Ni catalysts in CO2 methanation. NiAlOx mixed oxides with varying Ni loading as well as a 17 wt-% Ni/γ-Al2O3 catalyst were synthesized via co-precipitation and incipient… read more here.
Keywords: catalysts co2; deactivation catalysts; catalyst; deactivation ... See more keywords
Review on the catalytic tri-reforming of methane - Part I: Impact of operating conditions, catalyst deactivation and regeneration
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DOI: 10.1016/j.apcata.2021.118202
Abstract: Abstract Tri-reforming of methane (TRM) allows the production of syngas with a low environmental impact, an optimal energetic consumption, and a modular H2/CO molar ratio. However, despite a large number of publications devoted to TRM… read more here.
Keywords: catalyst deactivation; impact; reforming methane; deactivation ... See more keywords
Reversible and irreversible deactivation of Cu-CHA NH3-SCRcatalysts by SO2 and SO3
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DOI: 10.1016/j.apcatb.2017.12.018
Abstract: Abstract Sulfur oxides are a common source for the deactivation of Cu-exchanged CHA zeolite based catalysts used for NOx reduction in diesel exhausts by selective catalytic reduction with NH3 (NH3-SCR). Since water and possible formation… read more here.
Keywords: deactivation cha; deactivation; so2 so3; irreversible deactivation ... See more keywords
Insight into hydrothermal aging effect on deactivation of Pd/SSZ-13 as low-temperature NO adsorption catalyst: Effect of dealumination and Pd mobility
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DOI: 10.1016/j.apcatb.2020.119874
Abstract: Abstract Pd/SSZ-13 samples with the same Pd loading (1 wt.%) but different Si/Al ratio (6 and 13) were hydrothermally aged at 800, 850, and 900 oC, respectively. The Pd/SSZ-13 with a lower Si/Al ratio suffers… read more here.
Keywords: mobility; dealumination; ratio; deactivation ssz ... See more keywords
Deactivation of CeO2-TiO2 catalyst by K2SO4 for NH3-SCR: An experimental and DFT study
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DOI: 10.1016/j.apsusc.2021.149196
Abstract: Abstract K species in flue gas can lead to severe deactivation of SCR catalysts. In this study, the K2SO4 poisoning mechanism on the CeO2-TiO2 catalyst was investigated by experiments and DFT calculations. The presence of… read more here.
Keywords: tio2 catalyst; deactivation; ceo2 tio2;
Aqueous phase reforming of lignin-rich hydrothermal liquefaction by-products: A study on catalyst deactivation
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DOI: 10.1016/j.cattod.2020.08.013
Abstract: Abstract The water fraction derived from the hydrothermal liquefaction of a lignin-rich feedstock was subjected to aqueous phase reforming to produce hydrogen. Deactivation of the catalyst was observed, and it was ascribed to fouling phenomena… read more here.
Keywords: phase reforming; aqueous phase; deactivation; catalyst ... See more keywords
In-situ operando and ex-situ study on light hydrocarbon-like-diesel and catalyst deactivation kinetic and mechanism study during deoxygenation of sludge oil
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DOI: 10.1016/j.cej.2021.132206
Abstract: Abstract Deoxygenation is a highly significant means of generating oxygen-free hydrocarbon fuels from liquid biomass. This study will deoxygenate sludge palm oil (FFA % = 42.35%) in an H2-free atmosphere through a series of Mn-Co… read more here.
Keywords: deactivation; study; situ; deoxygenation ... See more keywords