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Alumina supporter containing modified gamma zeolite and its preparation method

A technology of alumina and zeolite, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc. rate, freezing point lowering range and other problems, to achieve the effect of improving the anti-coking ability, increasing the cetane number, and reducing the freezing point of diesel oil

Active Publication Date: 2008-01-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The earliest FCC catalyst for hydrocracking was Y-type zeolite, such as U.S. Patent USP4,985,134 and Chinese Patent CN1253989A, which used hydrothermally treated modified Y zeolite and amorphous silica-alumina as catalyst components. Although the quality of diesel products is relatively low Substantial increase, large freezing point depression, but high pressure rating and low diesel yield
[0004] Y-type zeolite is usually used as a catalyst for improving the quality of diesel oil and increasing the cetane number of diesel oil. It mainly uses the strong ring-opening activity of Y zeolite to improve the cracking performance of cyclic hydrocarbons and polycyclic aromatic hydrocarbons in the catalytic reaction process. , but the usually used Y-type zeolite has a strong acidity, which cannot guarantee the yield of diesel products, and the freezing point of diesel oil does not decrease significantly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of modified Y zeolite Y-A:

[0031] (1) Treat Y zeolite under 0.1MPa and 550°C water vapor for 1 hour to obtain superhydrophobic Y zeolite Y-W; wherein Y zeolite is produced by Wenzhou Catalyst Factory, and its properties are as follows: silicon-aluminum molar ratio (chemical method) 10.01, unit cell Constant 2.448nm, Na 2 The O content is 0.05wt%, and the dry basis is 75wt%.

[0032] (2) Put 300 grams of superhydrophobic Y zeolite in 1000 ml of water, stir and heat up to 60°C.

[0033] (3) Mix 181g nickel nitrate and 29g cobalt nitrate into 240ml solution, add ammonia water to the above-mentioned zeolite solution, control the pH value to be equal to 6, aging the solution for 2 hours after adding, filter, and dry at 110°C for 8 hours. obtained, denoted as Y-A, and its physical and chemical properties are shown in Table 1.

Embodiment 2

[0035] Preparation of modified Y zeolite Y-B:

[0036] Step (1) is with embodiment 1;

[0037] Step (2) Put 300 grams of superhydrophobic Y zeolite in 1500 ml of water, stir and heat up to 80° C., add 97.8 g of ferric nitrate and stir evenly.

[0038] Step (3) 360g nickel nitrate and 62g cobalt nitrate are made into 200ml solution, and add in the above-mentioned zeolite solution together with ammonia water, control the pH value to be equal to 5, after adding, the solution is aged for 2 hours, after filtering, dry at 110°C for 8 Hours, recorded as Y-B, its physical and chemical properties are shown in Table 1.

Embodiment 3

[0040]Preparation of modified Y zeolite Y-C:

[0041] Step (1) gets 100KgNaY zeolite (Wenzhou Catalyst Factory product, dry basis 50%), is broken to less than 20 orders, with 800 liters of NH containing 120Kg 4 NO 3 The solution was stirred at 70-75°C for 2 hours, this exchange step was repeated 10 times, filtered, and washed with water until neutral to give Na 2 Y zeolite with an O content of 0.19wt% was dried. Put the above-mentioned water-washed and dried zeolite into a high-pressure rotary furnace, rapidly heat up to 650° C., and roast for 2 hours at 0.1 Mpa and 100% steam pressure to obtain the superhydrophobic Y zeolite Y-C of the present invention. Its properties are as follows: molar ratio of silicon to aluminum (chemical method) 11.2, unit cell constant 2.448nm, Na 2 The O content is 0.05wt%, and the dry basis is 75wt%.

[0042] Step (2) Put 400 grams of the above-mentioned superhydrophobic Y zeolite in 1600 ml of water, stir and heat up to 75°C.

[0043] Step (3...

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Abstract

The invention discloses an alumina support containing Y zeolite and relative preparing method. The carrier utilizes the Y zeolite and alumina as carriers, while the property of zeolite can be changed via changing the metallic positive ions between the VIB group and / or VIII group to adjust the acid distribution, especially the proportion of B acid and L acid. The invention can be used a carrier of hydro-treating catalyst to fraction prepare the winter cleaning diesel fuel from poor diesel fuel.

Description

technical field [0001] The invention relates to a zeolite-containing alumina carrier and a preparation method thereof, in particular to an alumina carrier containing modified Y zeolite and a preparation method thereof, in particular to alumina containing modified Y zeolite used as a hydrogenation treatment catalyst Carriers and methods for their preparation. Background technique [0002] Zeolite molecular sieves are the only adsorption / catalytic materials with shape selectivity, which can not only reduce the generation of by-products through selective catalytic reactions, thereby improving the "atom utilization rate" of reaction raw materials, but also form production through structural adjustment, load modification, etc. The required functional catalytic materials are therefore increasingly being researched and developed to form new processes. In recent years, catalysts in many processes such as hydrotreating, hydrofinishing and hydroupgrading have also begun to use modifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/00B01J29/08B01J37/00C10G45/12
Inventor 兰玲刘雪玲蒋广安廖杰峰张晔
Owner CHINA PETROLEUM & CHEM CORP
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