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2020-10
22
Fine chemical catalyst
Chemical products can be divided into two categories, namely basic chemical products and fine chemical products. Fine chemical products originally referred to products made through deep processing. In the 1970s, some new definitions were proposed, one of which was widely recognized as: small batches
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2020-10
22
Knowledge sharing of hydrogenation catalysts
HydrorefiningcatalyzerIt is composed of active ingredients, adjuvants, and carriers. Its function is to remove sulfur, nitrogen, oxygen, and heavy metals through hydrogenation, as well as to saturate polycyclic aromatic hydrocarbons through hydrogenation. The molecular structure of the raw materials
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2020-10
22
Guide you to a detailed understanding of platinum catalysts
Platinum catalyst is a general term for catalysts made with platinum metal as the main active component. Platinum metal mesh, platinum black, or platinum supported on alumina or other carriers can also contain metal rhenium as a co catalyst component. Mainly used for processes such as ammonia oxida
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2020-10
22
What are the functions of catalyst carriers?
The carrier can provide the catalyst with appropriate shape, size, and mechanical strength to meet the operational requirements of industrial reactors; The carrier can disperse the active components on the surface of the carrier, obtain a higher specific surface area, and improve the catalytic effic
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2020-10
22
Catalyst deactivation mechanism
Solid acid and solid base catalysts, like other solid catalysts, undergo deactivation during the catalytic reaction process, and their mechanisms may involve the following possible pathways. 1. Toxic substances or inhibitors that adsorb alkaline molecular acid centers, whi
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2020-10
22
The influence of catalyst pore structure on catalytic reactions
In the production of chemical industry, the reactant molecules participating in catalytic reactions need to be dispersed through the pores to reach the interior of the catalyst, so the pore structure will be affected by internal diffusion to varying degrees. The diffusion of reactant molecules withi
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2020-10
22
Q: What is the mechanism of catalyst coking?
Q: What is the mechanism of catalyst coking?Answer:The mechanism of coke formation is extremely complex, with numerous steps and complex reaction seriesCatalyst-The reaction objects are vastly different. Generally, it includes dehydrogenation, isomerization, polymerization
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2020-10
22
Catalysts and catalytic reactions
Catalysts for oxidation reactions can be roughly divided into three categories: metals and metal ions, transition metal oxides and polyoxometalates (heteropolyacid compounds), and redox molecular sieves.Metals and metal ionsPrecious metal catalysts are usually loaded on activated carbon
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