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Parametric Study on the Deactivation of Supported Co3O4 Catalysts for Low Temperature CO Oxidation（图）
carbon monoxide oxidation supported cobalt oxides deactivation reaction parameters feed compositions
2013/10/13
This study focused on the influences of a variety of reaction parameters and guest molecules such as H2O and C3H8 on the deactivation of supported Co3O4 catalysts for CO oxidation. Additionally, the p...
Reaction Mechanism and Deactivation Modes of Heterogeneous Catalytic Systems（图）
catalyst activity catalyst selectivity catalyst deactivation active site diffusion regime
2013/10/14
Solving the problem of catalyst deactivation is essential in process design. To do this, various aspects of the kinetics of processes with catalyst deactivation, and their different mechanisms, are di...
Deactivation and Regeneration of Nickel-Based Catalysts for Steam-Methane Reforming（图）
nickel catalyst steam reforming deactivation sintering sulfur poisoning regeneration
2013/10/15
The deactivation of nickel catalysts used in Arak and Razi petrochemical complexes followed by catalyst regeneration was evaluated. The characterization of the different structures was made by powder ...
Deactivation Modes of Solid Catalysts with Different Active Sites（图）
solid catalyst deactivation mode bifunctional catalyst active site
2013/10/15
An approach is suggested to distinguish different types of active sites responsible for different reactions on bifunctional catalysts. The model assumes a non-uniform vulnerability of active sites tha...
Effect of Micropore Size on Catalyst Deactivation in Vapor Phase Beckmann Rearrangement over Zeolites
Beckmann rearrangement Cyclohexanone oxime Zeolite Caprolactam selectivity
2009/7/27
The vapor phase Beckmann rearrangement of cyclohexanone oxime (CHO) was carried out over TS-1 with an MFI pore structure and SSZ-31 and SSZ-24 with pore sizes larger than that of MFI to elucidate the...
Effects of Asphaltene Content in Atmospheric Residue and Mean Pore Size of Catalyst on Initial Deactivation of Hydrodesulfurization Catalyst
Hydrotreating Atmospheric residue Catalyst deactivation rate
2009/7/24
(HDS) of atmospheric residue (AR) over Ni-Co-Mo catalysts supported on γ-alumina was carried out to examine the effect of alumina pore size on HDS activity, hydrodemetallization (HDM) activity and ini...
Promotion of Catalytic Activities and Suppression of Deactivation by Water in the Hydrotreatment of Atmospheric Residue
Atmospheric residue Hydrotreating Water addition Hydrodesulfurization
2009/7/24
Water was added to extend the continuous run of the atmospheric residue hydrotreatment process in bench plant and autoclave tests for improvement of catalyst life. Addition of water increased the ca...
Deactivation of Pt/SO42−/ZrO2 Catalyst with Sulfur Compounds and Preventive Measures
Platinum catalyst Sulfated zirconia catalyst Isomerization
2009/7/24
Hydrodesulfurization of feed oil stocks is essential for the industrial isomerization process of light naphtha, because the isomerization catalysts are deactivated by small amounts of sulfur compound...
Catalyst Deactivation of High-silica ZSM-5 Zeolite Modified with Noble Metals during Vapor Phase Beckmann Rearrangement of Cyclohexanone Oxime
Beckmann rearrangement Catalyst deactivation High-silica zeolite
2009/7/24
High-silica ZSM-5 zeolites were synthesized by the addition of pentavalent ions, such as phosphorus and arsenic ions, to the mother gel for the zeolite preparation. The Beckmann rearrangement of cycl...
Involvement of Asphaltene Decomposition in the Rapid Deactivation of Hydrodesulfurization Catalysts under Conditions for Deep Desulfurization of Atmospheric Residue
Hydrodesulfurization catalyst Atmospheric residue hydrotreating
2009/7/24
The effect of asphaltene (ASP) decomposition on catalyst deactivation under deep desulfurization conditions was investigated by reduction of sulfur from 0.3 to 0.1 mass% in a treated atmospheric resi...
Promotion of Catalytic Activity and Suppression of Deactivation by Solvent Addition in the Hydrotreating of Atmospheric Residue
Atmospheric residue Hydrotreating Water addition Hydrodesulfurization
2009/7/24
The effect of addition of several solvents on atmospheric residue (AR) hydrotreating was examined in the autoclave test. Higher hydrodesulfurization (HDS) activity was obtained by adding solvents in t...
Catalyst Deactivation in Distillate Hydrotreating (Part 2) Raman Analysis of Carbon Deposited on Hydrotreating Catalyst for Vacuum Gas Oil
Catalyst deactivation Raman spectroscopy Coke Vacuum gas oil
2009/7/24
Carbon deposited on spent vacuum gas oil (VGO) hydrotreating catalysts from a commercial plant was investigated by elemental analysis and Raman spectroscopy. The samples of spent catalysts were separ...
车用发动机停缸模式下转速波动仿真（Modeling of Speed Fluctuations for Automotive Engine under Cylinder Deactivation Mode）
车用发动机 停缸 转速波动
2010/2/26
停缸技术可明显改善车用发动机的燃油经济性，但对其动力输出产生影响。通过建立发动机曲柄连杆多体模型，基于示功图和经验公式，分析了模型边界计算方法，仿真了发动机多种停缸模式的转速波动特性。结果表明，停缸工作模式的转速波动主要受发火间隔角的影响，减小工作缸负荷可降低转速波动。 Cylinder deactivation for automotive engine, to decrease the fue...
The kinetics of activation and deactivation in the process of water ozonising used for advanced oxidation of the dust waste from moulding sands
bentonite sands toxic compounds advanced oxidation ozone kinetics of dissolution
2011/3/29
Adding coal dust and organic carriers of the lustrous carbon to bentonite-bonded moulding sands in amounts justified by the technological regime and the use of cores and protective coatings based on o...
The kinetics of activation and deactivation in the process of water ozonising used for advanced oxidation of the dust waste from moulding sands
bentonite sands toxic compounds advanced oxidation ozone kinetics of dissolution
2011/3/29
Adding coal dust and organic carriers of the lustrous carbon to bentonite-bonded moulding sands in amounts justified by the technological regime and the use of cores and protective coatings based on o...