a c 10 + Ring-opening catalyst for selective hydrogenation of heavy aromatics and preparation method thereof

A hydrogenation ring-opening and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as ineffective utilization, achieve reasonable distribution of acid and precious metals, high activity, and improve synergistic effects Effect

Active Publication Date: 2021-02-23
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the invention is to solve the existing technology can not effectively utilize C 10 + The disadvantages of heavy aromatics make it high-value utilization, and provide a new catalyst for lightening heavy aromatics, that is, a C 10 + Catalyst for selective hydrogenation ring-opening of heavy aromatics and preparation method thereof

Method used

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  • a c <sub>10</sub> <sup>+</sup> Ring-opening catalyst for selective hydrogenation of heavy aromatics and preparation method thereof
  • a c <sub>10</sub> <sup>+</sup> Ring-opening catalyst for selective hydrogenation of heavy aromatics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Dissolve 40 g of ammonium fluorosilicate in 1000 mL of deionized water to make ammonium fluorosilicate solution;

[0029] (2) 5g of chloroplatinic acid hexahydrate was dissolved in 500mL of deionized water to obtain a chloroplatinic acid solution;

[0030](3) Add 100g HY molecular sieve into 600mL deionized water and stir at 90°C, and add 1000mL of ammonium fluorosilicate solution dropwise at a rate of 5mL / min, and add 1 / 2 of the ammonium fluorosilicate solution dropwise. Add the same amount of chloroplatinic acid solution when the total amount is added dropwise to the ammonium fluorosilicate solution, and the total amount of Pt added is 0.1% of the final catalyst weight; the ammonium fluorosilicate solution and the chloroplatinic acid solution are all added dropwise After that, keep stirring and aging for 3h;

[0031] (4) After aging, filter and wash with deionized water until no fluorine element can be detected in the washing liquid, dry at 120°C for 8h, and roas...

Embodiment 2

[0038] (1) Dissolve 40 g of ammonium fluorosilicate in 1000 mL of deionized water to make ammonium fluorosilicate solution;

[0039] (2) Dissolve 5g of chloroplatinic acid hexahydrate in 500mL of deionized water to obtain a chloroplatinic acid solution;

[0040] (3) Add 100g HY molecular sieve into 600mL deionized water and stir at 90°C, and add 1000mL of ammonium fluorosilicate solution dropwise at a rate of 10mL / min, and add 1 / 2 of the ammonium fluorosilicate solution dropwise. The same amount of chloroplatinic acid solution was added when all the ammonium fluorosilicate solution was added dropwise, and the total amount of Pt added was 0.1% of the final catalyst weight. After the ammonium fluorosilicate solution and the chloroplatinic acid solution are all added dropwise, continue to stir and age for 3 hours;

[0041] (4) After aging, filter and wash with deionized water until no fluorine element can be detected in the washing liquid, dry at 120°C for 8h, and roast at 500°C...

Embodiment 3

[0046] (1) Dissolve 40 g of ammonium fluorosilicate in 1000 mL of deionized water to make ammonium fluorosilicate solution;

[0047] (2) Dissolve 5g of chloroplatinic acid hexahydrate in 500mL of deionized water to obtain a chloroplatinic acid solution;

[0048] (3) Add 100g HY molecular sieve into 600mL deionized water and stir at 90°C, and add 1000mL of ammonium fluorosilicate solution dropwise at a rate of 5mL / min, and add 1 / 2 of the ammonium fluorosilicate solution dropwise. The same amount of chloroplatinic acid solution was added when all the ammonium fluorosilicate solution was added dropwise, and the total amount of Pt added was 0.05% of the final catalyst weight. After the ammonium fluorosilicate solution and the chloroplatinic acid solution are all added dropwise, continue to stir and age for 3 hours;

[0049] (4) After aging, filter and wash with deionized water until no fluorine element can be detected in the washing liquid, dry at 120°C for 8h, and roast at 500°C...

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Abstract

The invention discloses a C 10 + A catalyst for selective hydrogenation ring-opening of heavy aromatics and a preparation method thereof. The catalyst of the present invention, based on the mass of the catalyst, consists of the mass percentage of each component: HY molecular sieve 50-80%, platinum metal 0.05-0.35%, and the balance is alumina; the SiO of the catalyst 2 / A1 2 o 3 The molar ratio is 8~13, and the specific surface area is 450~600m 2 / g, the pore volume is 0.35~0.7cm 3 / g; the catalyst is HY molecular sieve first modified by ammonium fluorosilicate and platinum-containing solution, then extruded with alumina, dried and roasted, and finally modified by equal volume impregnation with platinum-containing solution, dried, Made after roasting. The catalyst of the present invention has higher activity and stability for lightening heavy aromatics, and is especially suitable for selective hydrogenation ring-opening of inferior macromolecular heavy aromatics to produce more light BTX aromatics or high-octane gasoline.

Description

technical field [0001] The invention relates to the field of catalysts for lightening heavy aromatics, in particular to a C 10 + Catalyst for selective hydrogenation and ring opening of heavy aromatics to produce light BTX aromatics or high-octane gasoline and its preparation method. Background technique [0002] Heavy aromatics mainly refer to C 10 Aromatic hydrocarbons above 100% are mainly derived from C 10 + C by-product of heavy aromatics and ethylene cracking unit 10 + Heavy aromatics, aromatics disproportionation and isomerization to produce oil, heavy aromatics by-product of high-temperature coking of coal, etc. The composition of heavy aromatics is very complex and has not been fully utilized for a long time. Domestically, heavy aromatics are basically sold at low prices or mixed with fuel oil, which not only causes waste of resources but also pollutes the environment. [0003] The Tatoray process is a typical toluene disproportionation and transalkylation pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/12B01J35/10C10G45/62
CPCB01J29/126B01J35/1023B01J35/1038B01J35/1042C10G45/62C10G2300/1096C10G2300/305C10G2400/30
Inventor 臧甲忠范景新郭春垒马明超于海斌李健赵训志王春雷靳凤英洪美花李佳刘洋
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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