Preparation method of solid acid catalyst
A solid acid catalyst and solid acid technology, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of rapid deactivation of solid acid catalysts and the impact of process technology industrialization, and achieve high selectivity , The effect of long catalyst life
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[0030] In the preparation method of the present invention, the particle size of the aluminum sol is 20-400nm, preferably 20-300nm. Said extrusion aids are well known to those skilled in the art. Commonly used extrusion aids are selected from sesame powder, oxalic acid, tartaric acid, citric acid, etc., preferably sesame powder; said peptizer is also known by those skilled in the art It is well known that commonly used peptizers are selected from nitric acid, hydrochloric acid, acetic acid, formic acid, citric acid, trichloroacetic acid, etc., preferably nitric acid.
[0031] After the solid acid catalyst of the present invention is loaded with a regeneration assistant with hydrogenation function, in the case of deactivation, it can be regenerated under hydrogen and suitable conditions, and the catalyst can be repeatedly regenerated and recycled. Therefore, the present invention provides an alkylation catalyst, which is characterized in that it contains a metal component with a hy...
Embodiment 1-3
[0057] This example illustrates the solid acid catalyst and molding process of the present invention.
[0058] The Y-type molecular sieve numbered Ya is beaten with water to a solid content of 200kg / m 3 Add the aluminum sol numbered Al1 in proportions of 60:40, 80:20 and 95:5 on the dry basis of the weight of Ya and Al1, and stir for 4h to make it evenly mixed. Then add the dry powder mixture 3% by weight (based on the dry basis weight of molecular sieve and aluminum sol calcined at 600°C) of nitric acid and sesbania powder, and add water to ensure that the water-to-powder ratio is 0.8, knead evenly, and then extrude the wet bar. After roasting, a solid acid catalyst sample is obtained.
[0059] The solid acid catalyst samples were named 60A1, 80A1 and 95A1, and their properties are shown in Table 1.
Embodiment 4-6
[0061] This example illustrates the solid acid catalyst and molding process of the present invention.
[0062] The Y-type molecular sieve numbered Ya is beaten with water to a solid content of 200kg / m 3 The molecular sieve slurry of Al2 is added to the aluminum sol numbered Al2 in proportions of 60:40, 80:20 and 95:5 on the dry basis of the weight of Ya and Al2. Stir for 4h to make it evenly mixed, and then add the mixed powder after drying 3% by weight (based on the dry basis weight of molecular sieve and aluminum sol calcined at 600°C) of nitric acid and sesame powder, and add water to ensure that the water-to-powder ratio is 0.8, knead uniformly, and then extrude. The resulting wet bar is dried, After roasting, a solid acid catalyst sample is obtained.
[0063] The solid acid catalyst samples were named 60A2, 80A2 and 95A2, and their properties are shown in Table 1.
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Abstract
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