Regular carrier catalyst with desulfurization effect as well as preparation and application thereof
A technology of structured carrier and desulfurization, which is applied in the field of structured carrier catalyst with desulfurization and its preparation and application, can solve the problems of octane number loss, affecting the desulfurization effect of sulfur-containing hydrocarbons, and high deactivation rate of adsorbents
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preparation example Construction
[0078] The method for preparing a structured carrier catalyst provided by the invention includes the step of preparing a suspension. The preparation method of the suspension includes: forming a mixture of metal powder, a hydroxyl-containing solvent and a surfactant, and treating it under ultrasonic waves to obtain a mixed liquid after ultrasonic treatment; wherein, during the ultrasonic treatment process, the fine particles are peeled off from the metal powder The metal particles are suspended in a hydroxyl-containing solvent (solvent for short); the larger particles are separated from the ultrasonically mixed solution to obtain a suspension, and the suspension contains fine particles containing modified metals. The metal powder (also known as metal powder) can be pure metal powder (when the metal film only contains modified metal and the modified metal is one kind), alloy powder containing modified metal and boron, containing Alloy powder of various modified metals. Among th...
Embodiment approach
[0093] According to the first embodiment described in the preparation method of the structured carrier catalyst of the present invention, preferably, the substrate coating slurry contains 40-75% by weight, for example, 50-70% by weight of aluminum oxide based on its dry weight. Aluminum oxide source and 25-60% by weight, such as 30-50% by weight, of at least one metal oxide in groups IIA and IIB. Preferably, it contains 60-70% by weight of an alumina source calculated as alumina and 30-40% by weight of at least one metal oxide in groups IIA and IIB.
[0094] According to the first embodiment of the preparation method of the structured carrier catalyst of the present invention, the matrix coating and the modified molecular sieve coating formed on the structured carrier are collectively referred to as the active component coating. Preferably, based on the total weight of the structured carrier catalyst, the total content of the matrix coating and the modified molecular sieve coa...
specific Embodiment approach
[0107] A specific embodiment of the preparation method of the structured carrier catalyst provided by the present invention includes the following steps: uniformly mixing the metal powder and the hydroxyl-containing solvent, and then using a specific ultrasonic power of 50-250W / (100g hydroxyl-containing solvent), preferably 100- Ultrasonic treatment at a power of 150W / (100g hydroxyl-containing solvent) for 4 to 10 hours, for example, 5 to 8 hours, and then centrifuge the ultrasonically mixed solution at 1200 to 3000 rpm, preferably 1500 to 2500 rpm, to obtain Suspension liquid; then mix the matrix and / or molecular sieve and / or particles containing matrix and molecular sieve with the suspension liquid, disperse evenly, freeze-dry, and coat the regular carrier to prepare the regular carrier catalyst. The average particle size of the metal powder is less than 20 microns, preferably 1-15 microns or 3-18 microns; the metal powder: hydroxyl-containing solvent = 1:2-15 weight ratio, p...
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