Core-shell-structured carrier for paraffin isomerization catalyst and preparation method of core-shell-structured carrier
A technology of catalyst carrier and core-shell structure, which is applied in the direction of catalyst carrier, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve problems such as poor stability, reduce residence time, improve anti-carbon performance, and improve The effect of stability
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Embodiment 1
[0028] Embodiment one: with Al 2 o 3 Preparation of catalyst support with core-shell structure prepared for the core
[0029] This embodiment provides a method for preparing a core-shell structure catalyst carrier, comprising the following steps:
[0030] S1: Using ammonia water with a mole fraction of 6% as the activator and deionized water as the medium, the catalyst carrier Al 2 o 3 The surface is pre-activated for 48 hours, and then dried in an oven at 100°C for 12 hours;
[0031] S2: Add the catalyst carrier Al dried in step S1 to n-butanol solution 2 o 3 , then add a small amount of deionized water and stir for 12 hours to ensure that Al 2 o 3 Completely disperse and make water molecules fully adsorb on Al 2 o 3 Molecular surface, to get Al 2 o 3 suspension;
[0032] S3: Al obtained in step S2 2 o 3 Add zirconium n-butoxide to the suspension, then stir for 5 minutes, then transfer to a high-pressure reactor, and hydrothermally synthesize at 100°C for 48 hou...
Embodiment 2
[0045] Embodiment two: different Al 2 o 3 Preparation of Core-Shell Structured Solid Supercatalyst with Content
[0046] In this example, four different Al 2 o 3 The core-shell structure catalyst carrier of content, specifically comprises the following steps:
[0047] S1: Using ammonia water with a mole fraction of 6% as the activator and deionized water as the medium, the catalyst carrier Al 2 o 3 The surface is pre-activated for 48 hours, and then dried in an oven at 100°C for 12 hours;
[0048] S2: Add the catalyst carrier Al dried in step S1 to n-butanol solution 2 o 3 , then add a small amount of deionized water and stir for 12 hours to ensure that Al 2 o 3 Completely disperse and make water molecules fully adsorb on Al 2 o 3 Molecular surface, to get Al 2 o 3 suspension;
[0049] S3: Al obtained in step S2 2 o 3 Add zirconium n-butoxide to the suspension, then stir for 5 minutes, then transfer to a high-pressure reactor, and hydrothermally synthesize at 1...
Embodiment 3
[0057] Example 3: Preparation of core-shell structure solid super catalysts prepared with different materials as the core
[0058] In this example, HZSM-5, Al 2 o 3 and SiO 2 For catalyst carrier, prepare different core-shell structure catalyst carrier, specifically comprise the following steps:
[0059] S1: Using ammonia water with a mole fraction of 6% as the activator and deionized water as the medium, the catalyst supports HZSM-5, Al 2 o 3 and SiO 2 The surface is pre-activated for 48 hours, and then dried in an oven at 100°C for 12 hours;
[0060] S2: In the n-butanol solution, add the catalyst carrier HZSM-5 and the catalyst carrier Al after drying in step S1 respectively 2 o 3 and catalyst support SiO 2 , then add a small amount of deionized water and stir for 12 hours to ensure that HZSM-5, Al 2 o 3 and SiO 2 Completely disperse and make water molecules fully adsorb on HZSM-5, Al 2 o 3 and SiO 2 Molecular surface, get HZSM-5, Al 2 o 3 and SiO 2 suspens...
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