Aluminum oxide loaded polyamide short fiber composite solid acid catalyst, and preparation method thereof
A technology of nylon staple fiber and composite solid acid, which is applied in the field of alumina-loaded nylon staple fiber composite solid acid catalyst and its production, can solve the problems of easy dissolution, harsh operating conditions, and wide acid strength distribution, so as to improve adsorption, Good catalytic effect and improved stability
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[0012] The described alumina-supported nylon short fiber composite solid acid catalyst is characterized in that it is made of the following parts by weight of raw materials: β-alumina 42, sepiolite 7, silica 36, zirconia 8, nylon Short fiber 15, aluminum sulfate 2, aminopropyl triethoxysilane 16, glycidyl methacrylate 4, appropriate amount of water.
[0013] The production method includes the following steps:
[0014] (1) Stir aluminum sulfate with water until it is completely dissolved, add sepiolite and soak for 10-12 hours, grind into a slurry, add silica and immerse and absorb under high-speed stirring for 2-4 hours, place in a stainless steel reactor, and seal it Hydrothermal treatment at 110°C for 6h, suction filtration, washing, drying at 80°C, grinding for later use;
[0015] (2) Put the nylon staple fiber into glycidyl methacrylate, soak for 3-6 hours, take it out, dry and crush to 200-300 mesh, add β-alumina, aminopropyltriethoxysilane and ultrasonically disperse 3-5 Ho...
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