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Isomerization catalyst and preparation method thereof

A catalyst and isomerization technology, applied in the direction of isomerization hydrocarbon production, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of poor stability, low isomerization reaction yield, low catalyst activity, etc. Performance improvement, high isomerization activity, effect of improving isomerization performance

Inactive Publication Date: 2016-08-10
SHANDONG CHENGTAI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing isomerization catalysts all have the problems of high isomerization reaction yield, low catalyst activity or poor stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1, an isomerization catalyst, in parts by weight, includes the following components, 5 parts of tin oxide, 3 parts of titanium oxide, 4 parts of iron oxide, 3 parts of manganese oxide, 10 parts of silicon dioxide, rare earth oxide 10 parts, 8 parts of alkaline earth oxide, 3 parts of titanium dioxide, 4 parts of tungsten trioxide, 4 parts of vanadium pentoxide, 4 parts of silicon fluoride, 2 parts of molecular sieve, 5 parts of silicon tetrachloride, 8 parts of titanium tetrachloride, 6 parts of binder.

[0027] The molecular sieve is a mixture of ZSM-5, beta zeolite molecular sieve and MFI molecular sieve with a mass ratio of 1:3:2.

[0028] The alkaline earth oxide elements are selected from lanthanum oxides.

[0029] The rare earth oxide is calcium oxide.

[0030] The binder is alumina.

[0031] A kind of preparation method of isomerization catalyst, comprises the following steps successively:

[0032] 1) Mix 5 parts of tin oxide, 3 parts of titanium oxid...

Embodiment 2

[0037] Example 2, an isomerization catalyst, in parts by weight, includes the following components, 10 parts of tin oxide, 5 parts of titanium oxide, 8 parts of iron oxide, 8 parts of manganese oxide, 15 parts of silicon dioxide, rare earth oxide 15 parts, 10 parts of alkaline earth oxide, 6 parts of titanium dioxide, 6 parts of tungsten trioxide, 8 parts of vanadium pentoxide, 6 parts of silicon fluoride, 3 parts of molecular sieve, 12 parts of silicon tetrachloride, 10 parts of titanium tetrachloride, 8 parts of binder.

[0038] The molecular sieve is a mixture of ZSM-5, beta zeolite molecular sieve and MFI molecular sieve with a mass ratio of 2:6:5.

[0039] The alkaline earth oxide element is selected from cerium oxide.

[0040] The rare earth oxide is magnesium oxide.

[0041] The binder is alumina.

[0042] 1) Mix 10 parts of tin oxide, 5 parts of titanium oxide, 8 parts of iron oxide, 8 parts of manganese oxide, 15 parts of silicon dioxide, 15 parts of rare earth oxi...

Embodiment 3

[0047] Embodiment 3, an isomerization catalyst, in parts by weight, includes the following components, 8 parts of tin oxide, 4 parts of titanium oxide, 6 parts of iron oxide, 6 parts of manganese oxide, 13 parts of silicon dioxide, rare earth oxide 13 parts, 9 parts of alkaline earth oxide, 5 parts of titanium dioxide, 5 parts of tungsten trioxide, 6 parts of vanadium pentoxide, 5 parts of silicon fluoride, 2.5 parts of molecular sieve, 8 parts of silicon tetrachloride, 9 parts of titanium tetrachloride, 7 parts of binder.

[0048] The molecular sieve is a mixture of ZSM-5, beta zeolite molecular sieve and MFI molecular sieve with a mass ratio of 1.5:5:4.

[0049] The alkaline earth oxide elements are selected from praseodymium oxides.

[0050] The rare earth oxide is barium oxide.

[0051] The binder is alumina.

[0052]1) Mix 8 parts of tin oxide, 4 parts of titanium oxide, 6 parts of iron oxide, 6 parts of manganese oxide, 13 parts of silicon dioxide, 13 parts of rare ea...

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Abstract

The invention discloses an isomerization catalyst and a preparation method thereof. The isomerization catalyst is prepared from, by weight, 5-10 parts of tin oxide, 3-5 parts of titanium oxide, 4-8 parts of iron oxide, 3-8 parts of manganese oxide, 10-15 parts of silica, 10-15 parts of rare earth oxide, 8-10 parts of alkali earth oxide, 3-6 parts of titanium dioxide, 4-6 parts of tungsten trioxide, 4-8 parts of vanadium pentoxide, 4-6 parts of silicon fluoride, 2-3 parts of molecular sieve, 5-12 parts of silicon tetrachloride, 8-10 parts of titanium tetrachloride and 6-8 parts of a binder. The catalyst prepared through adopting the above technical scheme has 80% or above higher stability than present catalysts, and the stability of the catalyst in reactions can last for 1000h or above.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to an isomerization catalyst and a preparation method thereof. Background technique [0002] In a chemical reaction, the chemical reaction rate of the reactants can be changed (both can be increased and decreased), and the quality and chemical properties of itself have not changed before and after the chemical reaction. The catalyst is called a catalyst. P-xylene is a very important basic chemical raw material. P-xylene is also widely used in the fields of medicine, pesticides, fuels and solvents. Currently, p-xylene is mainly produced by three processes: xylene adsorption separation and toluene selective disproportionation . [0003] In petrochemical production, C8 aromatics obtained from various processes contain ethylbenzene in addition to p-, m-, and o-xylene. Using this as a raw material, p-xylene products can be obtained through operations such as isomerization, rectificat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/80B01J29/00B01J35/10C07C15/08C07C5/27
CPCC07C5/2775B01J29/005B01J29/80B01J29/40B01J29/7007B01J2229/40B01J2229/20B01J35/615B01J35/647C07C15/08Y02P20/52
Inventor 吴明明宋峰李伟
Owner SHANDONG CHENGTAI CHEM IND
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