Skeletal isomerization catalyst, preparation method and application thereof
A catalyst and isomerization technology, which is applied in the direction of isomerization hydrocarbon production, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of short catalyst life, high binder content, long climbing period, etc. The effect of "short climbing period, low binder content and long one-way life"
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0075] Weigh sodium silicate, hydrogen ZSM-35 molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 15), sodium aluminate, silica sol are mixed and extruded to obtain the precursor mixture, and after the precursor mixture is dried, it is mixed with potassium hydroxide and 1,4-cyclohexanediamine (C 6 h 14 N 2 ) aqueous solution mixed, the molar ratio of the mixture is 1Al 2 o 3 : 4Na 2 O: 15SiO 2 :5C 6 h 14 N 2 : 500H 2 O. Then the above mixture was transferred to a crystallization kettle and crystallized at 160° C. for 72 hours. The obtained product is washed and dried with distilled water, then exchanged with ammonium and calcined at 550° C. to obtain a binder-free molecular sieve catalyst. The specific components are shown in Table 1.
[0076] The evaluation conditions of the catalyst are as follows: use ether post-mixed C4 (n-butene content 93.1%, the rest is butane, propane, propylene) as raw material; at a temperature of 350 ° C, reaction pressure 0.1MPa, C4 l...
Embodiment 2
[0078] Take 100 kg of binder-free molecular sieve catalyst prepared in Example 1, 100 kg of ferric nitrate nonahydrate and 1000 kg of deionized water for ion exchange, stir at 70°C for 2 hours, filter, and dry at 120°C 12 hours, and then calcined at 550° C. for 8 hours to obtain an iron-containing binderless molecular sieve catalyst, marked as Example 2. In weight percentage, the content of iron element in Example 2 is 0.9%.
[0079] The evaluation conditions of the catalyst are as follows: use ether post-mixed C4 (n-butene content 93.1%, the rest is butane, propane, propylene) as raw material; at a temperature of 350 ° C, reaction pressure 0.1MPa, C4 liquid volume space velocity 2.0 hours -1 , Catalyst activity was evaluated under the condition of catalyst loading of 0.1 cubic meters. The evaluation results are shown in Table 1.
Embodiment 3
[0081] Take 100 kg of binder-free molecular sieve catalyst prepared in Example 1, 100 kg of potassium nitrate and 1000 kg of deionized water for ion exchange, stir at 70°C for 2 hours, filter, and dry at 120°C for 12 hours , and then calcined at 550° C. for 8 hours to obtain a potassium-containing binderless molecular sieve catalyst, marked as Example 3. In weight percent, the content of potassium element in Example 3 is 0.4%.
[0082] The evaluation conditions of the catalyst are as follows: use ether post-mixed C4 (n-butene content 93.1%, the rest is butane, propane, propylene) as raw material; at a temperature of 350 ° C, reaction pressure 0.1MPa, C4 liquid volume space velocity 2.0 hours -1, Catalyst activity was evaluated under the condition of catalyst loading of 0.1 cubic meters. The evaluation results are shown in Table 1.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More