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Isomerization catalyst, preparation and application

A catalyst, isomerization technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems affecting the reaction process, mass transfer problems of reactant molecules or product molecules, etc., and achieve high isomerization selection. Effects of sex and isomer yield

Active Publication Date: 2018-06-08
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

[0006] The pore structure will affect the reaction process and also bring mass transfer problems of reactant molecules or product molecules

Method used

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  • Isomerization catalyst, preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Take 5g of the ZSM-22 molecular sieve tablet from which the template agent has been completely removed in Comparative Example 1, crush it to 20-40 mesh, mix it with 10g of benzene, place it at 25°C for 6h, and dry the solid obtained after filtration at 120°C for 10min, then place it in Quartz tube, in N 2 Under atmosphere, treat at 500° C. for 4 hours and then cool to room temperature to obtain a modified ZSM-22 molecular sieve carrier. Wherein the content of carbon is 2.0wt.%, the micropore volume is 0.001cm 3 / g.

[0050] Take 2g of the above-mentioned ZSM-22 molecular sieve carrier, and use 2.0mL H 2 PtCl 6 The solution (containing Pt0.005g per mL) was impregnated, placed at room temperature for 12h, dried at 120°C for 2h, and then placed in a hydrogen atmosphere at 500°C for 4h to obtain the catalyst of the present invention with 0.5wt.% Pt.

[0051] Take 1.0 mL of the catalyst prepared above and put it in a stainless steel tube reactor. According to the reactio...

Embodiment 2

[0053] Take 5 g of the SAPO-11 molecular sieve tablet from which the template agent was completely removed in Comparative Example 2, crush it to 20-40 mesh, mix it with 10 g of n-heptane, place it at 25 ° C for 6 h, and dry the solid obtained after filtration at 120 ° C for 10 min, then placed in a quartz tube, in N 2 Under atmosphere, treat at 500° C. for 4 hours and then cool to room temperature to obtain the treated SAPO-11 molecular sieve carrier. Wherein the content of carbon is 1.8wt.%, the micropore volume is 0.01cm 3 / g.

[0054] Take 2g of the above-mentioned SAPO-11 molecular sieve carrier, and use 1.5mL H 2 PtCl 6 The solution (containing Pt0.0066g per mL) was subjected to saturated impregnation, placed at room temperature for 12h, then dried at 120°C for 2h, then placed in a hydrogen atmosphere at 500°C for 4h, to obtain the catalyst of the present invention containing 0.5wt.%Pt .

[0055] Take 1.0 mL of the above-prepared catalyst and put it in a stainless st...

Embodiment 3

[0057] Take 5g of the ZSM-23 molecular sieve tablet from which the template agent was completely removed in Comparative Example 3, crush it to 20-40 mesh, mix it with 10g of toluene, place it at 25°C for 6h, and dry the solid matter obtained after filtration at 120°C for 10min, then place In a quartz tube, in N 2 Under the atmosphere, treat at 500°C for 4 hours and then cool to room temperature to obtain a modified ZSM-23 molecular sieve, in which the carbon content is 0.5wt.%, and the micropore volume is 0.001cm 3 / g.

[0058] Take 2g of the above-mentioned ZSM-23 molecular sieve carrier, and use 2.0mL H 2 PtCl 6 The solution (containing Pt0.005g per mL) was subjected to saturated impregnation, placed at room temperature for 12h, then dried at 120°C for 2h, and then placed in a hydrogen atmosphere at 500°C for 4h to obtain the catalyst of the present invention with 0.5wt.% Pt.

[0059] Take 1.0 mL of the catalyst prepared above and put it in a stainless steel tube reactor....

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Abstract

The invention discloses a preparation method and an application of an isomerization catalyst. The method comprises the following specific steps: filling pore channels of a molecular sieve with hydrocarbon compounds firstly, then performing heating treatment to obtain a molecular sieve support with the blocked pore channels of the molecular sieve, supporting metal active components on the support,and performing drying and reduction to obtain the target catalyst. Part of organic matter is transformed into carbonaceous matter to block the pore channels of the molecular sieve by controlling treatment conditions, so that pore volume and pore channel depth of the molecular sieve are regulated. Compared with the prepared catalyst in the prior art, the catalyst prepared with the method has higherisomerization selectivity and isomerization yield in an isomerization reaction of n-alkanes.

Description

technical field [0001] The invention relates to a hydroisomerization catalyst. [0002] The present invention relates to a method for preparing the above-mentioned catalyst. [0003] The invention relates to the application of the above-mentioned catalyst in the isomerization reaction of n-paraffins. technical background [0004] The isomerization reaction of alkanes plays a very important role in the process of improving the quality of oil products. The hydroisomerization of light alkanes can produce high-octane gasoline blending components, while the hydroisomerization of long-chain alkanes is mainly used to improve the low temperature flow properties of jet fuel, diesel oil and lubricating oil. The alkane isomerization catalyst supported by molecular sieves is a dual-functional catalyst. The metal sites mainly provide hydrogenation / dehydrogenation performance, the acidic sites of the molecular sieve support provide isomerization / cracking performance, and the pores of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70B01J29/78B01J29/85C10G45/64
CPCB01J29/7007B01J29/7042B01J29/7892B01J29/85C10G45/64C10G2300/1081C10G2300/70
Inventor 田志坚吕广王从新章冠群李伟刘浩曲炜李鹏马怀军
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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