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Acidic Mesoporous Zirconium Phosphate Pillared Activated Clay Deolefination Catalyst

A technology of mesoporous zirconium phosphate and mesoporous phosphoric acid, applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as short production cycle, loss of aromatic and other oil bodies, and many operations. To achieve the effect of dense structure

Active Publication Date: 2020-04-24
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process is relatively simple, but the disadvantage is that some insoluble polymers and coke are adsorbed on the granular clay, and the production cycle is very short. Generally, the refining life of granular clay is only 2 months, and the granular clay cannot be recycled, and the active clay needs to be replaced frequently. The oil body loss is more serious

Method used

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  • Acidic Mesoporous Zirconium Phosphate Pillared Activated Clay Deolefination Catalyst
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  • Acidic Mesoporous Zirconium Phosphate Pillared Activated Clay Deolefination Catalyst

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Embodiment approach 1

[0025] This embodiment provides an acidic mesoporous zirconium phosphate pillared activated clay deolefination catalyst, which is composed of mesoporous zirconium phosphate and activated bentonite. 12.5%wt, its preparation method is as follows:

[0026] Bentonite pre-treatment:

[0027] Grind and sieve bentonite (Bentonite) raw soil to obtain bentonite powder of about 200 mesh, add deionized water according to the ratio of bentonite powder to deionized water (1:50), fully swell for 7 days, and centrifuge at low speed to remove impurities such as large particles of quartz Then dry to obtain activated bentonite for future use.

[0028] Preparation of mesoporous zirconium phosphate pillared active clay deolefin catalyst:

[0029] Add 15ml of sulfuric acid solution (molar concentration: 0.87mol / L) to 3.2g of zirconium hydroxide, then add 2.5g of CTAB aqueous solution and 2.5g of activated bentonite, stir for 2 hours and then transfer to a stainless steel with Teflon lining for r...

Embodiment approach 2

[0042] This embodiment provides an acidic mesoporous zirconium phosphate pillared activated clay deolefination catalyst, which is composed of mesoporous zirconium phosphate and activated bentonite. 19%wt, its preparation method is as follows:

[0043] Bentonite pre-treatment:

[0044] Grind and sieve bentonite (Bentonite) raw soil to obtain bentonite powder of about 250 mesh, add deionized water according to the ratio of bentonite powder to deionized water (1:75), fully swell for 7 days, and centrifuge at low speed to remove impurities such as large particles of quartz Then dry to obtain activated bentonite for future use.

[0045] Preparation of mesoporous zirconium phosphate pillared active clay deolefin catalyst:

[0046] Add 15ml of sulfuric acid solution (molar concentration: 0.87mol / L) to 3.2g of zirconium hydroxide, then add 3.75g of CTAB aqueous solution and 3.75g of activated bentonite, stir for 2.5h and then transfer to a stainless steel with polytetrafluoroethylen...

Embodiment approach 3

[0048] This embodiment provides an acidic mesoporous zirconium phosphate pillared activated clay deolefination catalyst, which is composed of mesoporous zirconium phosphate and activated bentonite. 25%wt, its preparation method is as follows:

[0049] Bentonite pre-treatment:

[0050] Grind and sieve bentonite raw soil to obtain bentonite powder of about 150 mesh, add deionized water according to the ratio of bentonite powder to deionized water at 1:100, fully swell for 7 days, and centrifuge at low speed to remove impurities such as large particles of quartz Then dry to obtain activated bentonite for future use.

[0051] Preparation of mesoporous zirconium phosphate pillared active clay deolefin catalyst:

[0052] Add 11.5ml of sulfuric acid solution (molar concentration: 0.87mol / L) to 2.4g of zirconium hydroxide, then add 3.75g of CTAB aqueous solution and 3.75g of activated bentonite, stir and react for 1.5h, then transfer to stainless steel with polytetrafluoroethylene l...

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Abstract

The invention relates to the technical field of aromatic hydrocarbon oil catalysis and discloses an acid mesoporous zirconium phosphate pillared activated clay de-olefin catalyst. The de-olefin catalyst is prepared from mesoporous zirconium phosphate and activated bentonite, wherein the mesoporous zirconium phosphate is pillared between activated bentonite layers; and the ratio of the mesoporous zirconium phosphate is 12.5-25wt%. The preparation method comprises the following steps: S1, adding a sulfuric acid solution into zirconium hydroxide, adding a mesoporous template agent and the activated bentonite, stirring and reacting, transferring into a reactor, and crystallizing to obtain a crystal compound; S2, centrifuging, washing and drying the crystal, and performing phosphoric acidtreatment on the crystal; and S3, washing, filtering and drying the crystal subjected to phosphate treatment, and calcining the crystal, thereby obtaining the acid mesoporous zirconium phosphate pillared activated clay de-olefin catalyst. The catalytic activity of the mesoporous zirconium phosphate pillared activated clay catalyst disclosed by the invention is obviously improved; and meanwhile, the catalyst is high in stability and long in service life.

Description

technical field [0001] The invention relates to the technical field of aromatic hydrocarbon oil catalysis, in particular to a preparation method of an acidic mesoporous zirconium phosphate pillared activated clay deolefin catalyst. Background technique [0002] Catalytic reforming of naphtha is the main way to produce aromatics, but the aromatics products produced inevitably contain trace amounts of olefins. With the continuous increase of production processes, the content of olefins in reformed aromatics is also increasing. The chemical reactivity of aromatics is much less than that of these alkenes. The colloids formed by the polymerization of these olefins are easy to polymerize, which not only reduces the quality of aromatic products, but also seriously affects the further separation of aromatics and subsequent deep processing. Therefore, the effective removal of olefinic impurities in the redesigned aromatic oil is an important step to obtain high-quality aromatic raw ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/16B01J35/10B01J37/10
CPCB01J27/16B01J35/1061B01J37/10
Inventor 吴妹李爽郭越蒋金龙陈静倪伶俐
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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