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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...
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...
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 ...
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...
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...
(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...
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...
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...
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...
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...
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...
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...
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...
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...
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...

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