30results about How to "Good skeleton support" patented technology

The invention discloses a hydrogenation and metal removing catalyst preparation method, which comprises: (1) impregnating a physical pore expanding agent by using a silicon-containing solution, carrying out mixing kneading on the physical pore expanding agent, pseudo-boehmite, an auxiliary extrusion agent and a glue solvent after the impregnating to form a plastic body, extruding strips, drying, calcining the dried material in a nitrogen atmosphere, and then calcining in an air atmosphere to produce a silica-containing alumina carrier; and (2) impregnating the carrier by using a hydrogenation activity component impregnating liquid, drying the material, and calcining to prepare the hydrogenation and metal removing catalyst. According to the present invention, the catalyst prepared through the method has advantages of high mechanical strength, suitable pore structure, high catalytic activity, and high activity stability.

The invention discloses a carrier for a hydrogenation protecting agent, a catalyst and a preparation method thereof. The carrier is an alumina carrier, which contains rod-shaped alumina clusters; the length of the rod-shaped alumina is 2-6µm, the diameter is 100-300nm, and the outer diameter of the rod-shaped alumina clusters is 8-25µm; Rod-shaped alumina clusters account for 35%-49% of the weight of the alumina carrier. The preparation method of the carrier comprises: roasting pseudo-boehmite A to obtain alumina; immersing the alumina in an aqueous solution of ammonium bicarbonate for sealing and heat treatment, drying, and immersing in polyethylene glycol solution, and drying the material after immersion, Rod-shaped alumina clusters are obtained; then pseudo-boehmite B is kneaded with the above-obtained rod-shaped alumina clusters to form, and the formed product is dried and calcined to obtain a carrier. As a protection catalyst for residual oil hydrogenation, the carrier has the characteristics of good macromolecule diffusion performance, strong impurity capacity and high demetallization activity, and is especially suitable for residual oil hydrogenation treatment process.

The invention relates to the field of catalyst preparation, and discloses a method for preparing a silicon-containing hydrodemetallization catalyst. The method includes the following steps: (1) first contacting a first silicon-containing solution with a first physical pore-enlarging agent, and The second silicon-containing solution is contacted with the second physical pore-enlarging agent for the second time; (2) the contacted first physical pore-enlarging agent obtained in step (1), the contacted second physical pore-enlarging agent and the pseudo thin water The bauxite is mixed, shaped, first dried, and first calcined to obtain a silicon-containing alumina carrier; (3) the hydrogenation active component impregnating solution is contacted with the silicon-containing alumina carrier obtained in step (2) for the third time, and The contacted silicon-containing alumina carrier is subjected to second drying and second calcining to obtain a silicon-containing hydrodemetallization catalyst. The catalyst prepared by the method has high mechanical strength, suitable pore structure, moderate interaction between active components and supports, and high hydrodemetallization activity and activity stability.

The invention discloses a warpage resistance nylon 6 composite material for a vehicle air conditioning air door and a preparation method thereof. The composite material is composed of nylon 6 chips, fiberglass, glass microballoons, compatilizer, antioxidizer, a coupling agent and a lubricating agent. The preparation method includes the following steps: (1) after being uniformly mixed, the nylon 6chips, the compatilizer, the antioxidizer, the coupling agent and the lubricating agent are added into a double screw extruder on the first segment of a barrel, the glass microballoons are added by aside feeding machine on the fourth segment of the barrel, and the fiberglass is added by the side feeding machine on the sixth segment of the barrel; and (2) after being extruded outside, the preparedparticles are dried and cooled, and finally the warpage resistance nylon 6 composite material for the vehicle air conditioning air door can be obtained. The warpage resistance nylon 6 composite material prepared by the invention has the advantages of extremely high flexural modulus, high fluidity and favorable dimension stability, solves the problem of warpage of a large finished piece caused bymaterial shrinkage, and guarantees the assembly of the finished piece.