Preparation method of hydroisomerization/cracking catalyst and catalyst

A cracking catalyst and hydrogen isomerization technology, applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of lower product performance, lower yield of target products, and reduced yield, etc., to achieve Effects of increasing diesel content and lubricating base oil content, excellent isomerization performance, and good cracking performance

Active Publication Date: 2016-07-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive cracking will also cause a sharp increase in light products, and the yield of target products (diesel or lubricati

Method used

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  • Preparation method of hydroisomerization/cracking catalyst and catalyst
  • Preparation method of hydroisomerization/cracking catalyst and catalyst
  • Preparation method of hydroisomerization/cracking catalyst and catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take 100 g of sodium ZSM-23 molecular sieve containing isopropylamine template, place it in 3 L of NaOH solution with a concentration of 0.2 mol / L, treat it at 80 ° C for 180 min, filter, wash until the eluate is neutral, dry and Roasting removes the template agent; the resulting product is placed in 2L of NH with a concentration of 0.5mol / L 4 NO 3 In the solution, exchange at 60°C for 180min, filter, wash with deionized water until the eluent is neutral, exchange continuously (repeat the above operation) twice, dry at 120°C, and roast at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 o 3 ) and mix it evenly, add 80g5wt.%HNO 3 Solution, kneaded at room temperature for 2 hours, extruded at room temperature with an automatic extruder, dried naturally, then dried at 120°C for 4 hours, and calcined at 550°C for 8 hours to obtain a molecular sieve carrier (H-ZSM-23 carrier). With 10mL of chloroplatinic acid (H 2 PtCl 6 ...

Embodiment 2

[0031] Take 100g of sodium ZSM-23 molecular sieve containing isopropylamine template, put it in 3L NaOH solution with a concentration of 0.4mol / L, treat it at 80°C for 180min, filter, wash until the eluent is neutral, dry and Roasting removes the template agent; the resulting product is placed in 2L of NH with a concentration of 0.5mol / L 4 NO 3In the solution, exchange at 60°C for 180min, filter, wash with deionized water until the eluent is neutral, exchange continuously (repeat the above operation) twice, dry at 120°C, and roast at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 o 3 ) and mix it evenly, add 80g5wt.%HNO 3 Solution, kneaded at room temperature for 2 hours, extruded at room temperature with an automatic extruder, dried naturally, then dried at 120°C for 4 hours, and calcined at 550°C for 8 hours to obtain a molecular sieve carrier (H-ZSM-23 carrier). With 10mL of chloroplatinic acid (H 2 PtCl 6 ) solution t...

Embodiment 3

[0033] Take 100 g of sodium ZSM-23 molecular sieve containing isopropylamine template, place it in 3 L of NaOH solution with a concentration of 0.6 mol / L, treat it at 80 ° C for 180 min, filter, wash until the eluate is neutral, dry and Roasting removes the template agent; the resulting product is placed in 2L of NH with a concentration of 0.5mol / L 4 NO 3 In the solution, exchange at 60°C for 180min, filter, wash with deionized water until the eluent is neutral, exchange continuously (repeat the above operation) twice, dry at 120°C, and roast at 550°C for 24h to obtain Hydrogen ZSM-23 molecular sieve (H-ZSM-23). Take 30g of alumina (γ-Al 2 o 3 ) and mix it evenly, add 80g5wt.%HNO 3 Solution, kneaded at room temperature for 2 hours, extruded at room temperature with an automatic extruder, dried naturally, then dried at 120°C for 4 hours, and calcined at 550°C for 8 hours to obtain a molecular sieve carrier (H-ZSM-23 carrier). With 10mL of chloroplatinic acid (H 2 PtCl 6 ...

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Abstract

The invention relates to a preparation method of a hydroisomerization/cracking catalyst. The method specifically comprises the following steps: treating a sodium-type ZSM-23 molecular sieve containing a template agent with an alkaline solution having a certain concentration; washing the obtained product with deionized water, and performing drying and calcination to remove the template agent; performing replacement with an ammonium nitrate solution, performing filtration, washing the obtained product with deionized water, and performing drying and calcination to prepare a hydrogen-type ZSM-23 molecular sieve; mixing the hydrogen-type ZSM-23 molecular sieve with an amorphous oxide and an acid solution, and performing molding and calcination to prepare a carrier; and soaking the carrier in an aqueous solution of soluble salt, and performing drying and calcination to obtain the catalyst. Compared with a catalyst prepared in the prior art, the prepared catalyst can be used in a conversion process of wax in Fischer-Tropsch synthesis, and has favorable catalytic activity and selectivity of target products.

Description

technical field [0001] The invention belongs to the field of molecular sieve catalysts, and in particular relates to a preparation method of a ZSM-23 molecular sieve-based hydroisomerization / cracking catalyst. Background technique [0002] Fischer-Tropsch synthesis (Fischer-Tropsch synthesis), referred to as FT reaction, is based on synthesis gas (CO and H 2 ) is a process in which paraffin-based liquid fuels are synthesized as raw materials under catalysts (such as iron-based, cobalt-based, etc.) and appropriate reaction conditions. Traditional Fischer-Tropsch synthesis is characterized by wide distillation range distribution, high content of heavy hydrocarbons, and all of them are straight chain hydrocarbons. Such heavy alkanes have a high freezing point and are not suitable for direct use as diesel oil or lubricating oil. Therefore, the freezing point must be depressed. The most important means of depreciating normal paraffins is hydroisomerization and cracking, which c...

Claims

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Application Information

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IPC IPC(8): B01J29/74C10G45/64C10G47/18
Inventor 王从新田志坚曲炜马怀军徐仁顺王炳春潘振栋王冬娥李鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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