Refined triphenyl fraction catalyst and preparation method and application thereof

A technology for triphenyl fraction and catalyst, which is applied in the field of refining triphenyl fraction catalyst and its preparation and application, can solve the problems of low catalyst activity and high bromine index of products, and achieve the effects of good stability and high catalytic activity

Active Publication Date: 2013-07-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still shortcomings such as low activity of the catalyst used and high bromine index of the product

Method used

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  • Refined triphenyl fraction catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The preparation process of catalyst E-1 of the present invention is as follows:

[0029] (1) 1000 grams of mass concentration are lanthanum nitrate solution of 20% (calculated as lanthanum oxide) and 800 grams of hydrogen type Y molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 8.7, and the specific surface area is 726m 2 / g) were thoroughly mixed, then dried at 130° C. for 24 hours, and calcined at 750° C. for 3 hours to obtain a modified Y-type molecular sieve with a mass content of lanthanum oxide of 20%.

[0030] (2) 500 grams of ammonium chloride solution with a mass concentration of 10% (in terms of halogen) and 450 grams (in terms of aluminum oxide) of aluminum hydroxide (SB produced by German Condean Company) are fully mixed, and then heated at 50 ° C. Drying at low temperature for 48 hours, and calcining at 400°C for 8 hours to obtain modified alumina with a chlorine content of 6.8m%.

[0031] (3) the modified Y-type molecular sieve that 200 grams of steps...

Embodiment 2

[0033] The preparation of catalyst E-2 of the present invention

[0034] The preparation process of catalyst E-2 of the present invention is the same as that of Example 1, except that cerium nitrate is used to replace lanthanum nitrate. The prepared catalyst E-2 of the present invention has the composition shown in Table 1, and the product bromine index results are shown in Table 2 and Table 3. .

Embodiment 3

[0036] The preparation of catalyst E-3 of the present invention

[0037] The preparation process of catalyst E-3 of the present invention is the same as embodiment 1, and the difference is that hydrogen type β molecular sieve (SiO 2 / Al 2 o 3 The molar ratio is 26, and the specific surface area is 547m 2 / g) instead of hydrogen-type Y molecular sieve, the composition of the prepared catalyst E-3 of the present invention is shown in Table 1, and the bromine index results of the product are shown in Table 2 and Table 3.

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Abstract

The invention relates to a refined triphenyl fraction catalyst and a preparation method thereof and application of the catalyst to the process of catalyzing and refining triphenyl fraction under the non-hydrogen condition. The catalyst consists of a rare earth modified molecular sieve and halogen modified inorganic refractory oxide and is used for carrying out catalytic treatment on the triphenylfraction. Micro olefins in the triphenyl fraction can be effectively removed. The content of arenes is slightly increased. The catalyst has high activity and stability.

Description

technical field [0001] The invention relates to a catalyst for refining triphenyl fractions and a preparation method thereof. The catalyst is particularly suitable for the refining process of triphenyl fractions (triphenyl refers to benzene, toluene and xylene, also known as BTX) under non-hydrogenation conditions. Background technique [0002] Aromatic hydrocarbons are important basic raw materials in petrochemical industry, and are also widely used in the synthesis of fine chemicals, solvents, explosives, military industry and aerospace. Currently the most important source of aromatics is the catalytic reforming process. However, olefins, including monoolefins, dienes, and styrene, are easily by-produced in the production process of aromatics. These olefin impurities are relatively active, and their existence will have adverse effects on some subsequent chemical processes, such as coking in high-temperature reactors. In order to produce qualified aromatics and solvent oi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/70
Inventor 刘全杰徐会青贾立明张喜文王伟
Owner CHINA PETROLEUM & CHEM CORP
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