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Combined zeolite comprising two kinds of modified Y-type zeolite

A technology of combining zeolite and zeolite, which is applied in the directions of crystalline aluminosilicate zeolite, faujahedral crystalline aluminosilicate zeolite, etc., can solve problems such as difficult implementation, and achieve the effects of excellent activity, high selectivity and diesel oil

Inactive Publication Date: 2003-05-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Difficult to implement in industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1000g SiO 2 / Al 2 o 3 The ratio is 5.0, the unit cell parameter is 2.468nm, and the NaY zeolite with a crystallinity of 97% is added to 8L containing 800g NH 4 NO 3 In the solution, the temperature was raised to 95°C, stirred for 1 hour, the slurry was filtered, and the operation was repeated twice. The filter cake was finally washed with deionized water. At this time, the Na in the washed filter cake was analyzed. 2 The weight content of O is 2.3%.

[0028] Put the filter cake in a hydrothermal treatment furnace with external heat and internal pressure, raise the temperature to 660°C, control the partial pressure of water vapor in the furnace to 0.07Mpa, conduct hydrothermal treatment for 2 hours, and return to electricity to cool down naturally.

[0029] Zeolite samples after hydrothermal treatment were added with 0.15N HNO 3 , with 1.0N NH 4 NO 3 In 10L of the solution, the weight ratio of zeolite to solution is 1:8, stirred at 90°C for 1 hour, filtered, and r...

Embodiment 2

[0036] 800g SiO 2 / Al 2 o 3 The ratio is 5.0, the unit cell parameter is 2.468nm, and the NaY zeolite with a crystallinity of 97% is added to 8L containing 960g NH 4 NO 3 In the solution, the temperature was raised to 90°C, stirred for 1 hour, the slurry was filtered, and the operation was repeated twice. The filter cake was finally washed with deionized water. At this time, the Na in the washed filter cake was analyzed. 2 The weight content of O is 1.9%.

[0037] Put the filter cake in a hydrothermal treatment furnace with external heat and internal pressure, raise the temperature to 620°C, control the partial pressure of water vapor in the furnace to 0.12Mpa, conduct hydrothermal treatment for 3 hours, and return to electricity to cool down naturally.

[0038] Zeolite samples after hydrothermal treatment were added with 0.08N HNO 3 , with 1.0N NH 4 NO 3 In 8L of the solution, the weight ratio of the zeolite to the solution was 1:8, stirred at 90°C for 2 hours, filtere...

Embodiment 3

[0045] Put 1400g of the sample in Example 1 in an external heat and internal pressure hydrothermal treatment furnace, raise the temperature to 650°C, control the partial pressure of water vapor in the furnace to 0.08Mpa, and treat it for 2 hours. The product obtained after cooling is the second modified product. Y zeolite sample 3. The properties of Sample 3 are listed below:

[0046] Crystallinity 100%;

[0047] Specific surface area 816m 2 / g;

[0048] Unit cell parameter 2.432nm

[0049] SiO 2 / Al 2 o 3 Ratio of 13.1

[0050] Infrared acidity is 0.38mmol / g

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Abstract

The combined zeolite comprises two kind sof modified Y-type zeolite, the first kind of 1-9 pts.wt. and the second kind in 9-1 pts.wt. The first kind of modified Y-type zeolite has crystallinity higher than 85%, specific surface area greater than 700 sq m / g, crystal cell parameter 2.420-2.445 nm, SiO2 / Al2O3 ratio 8-18 and infrared acidity 0.6-1.6 mmol / g; and the second kind of modified Y-type zeolite has crystallinity higher than 90%, specific surface area greater than 750 sq m / g, crystal cell parameter 2.425-2.435 nm, SiO2 / Al2O3 ratio 8-18 and infrared acidity 0.2-0.6 mmol / g. The combined zeolite may be compounded with refractory oxides, such as amorphous Si-Al or Al2O3 to constitute the carrier for hydrocarbon-converting hydrogenation catalyst with group VIB and / or group VIII metal as active component.

Description

1. Technical field: [0001] The present invention relates to a zeolite, especially an acid component for a hydrocarbon conversion catalyst, especially a combined zeolite composed of two modified Y zeolites. 2. Background technology: [0002] Hydrocracking of heavy distillates to produce light distillates, especially to increase the production of jet fuel and diesel, is an important issue in modern refineries. [0003] The key to increasing the proportion of jet fuel and diesel in the hydrocracking product is to prepare a suitable catalyst and match it with an appropriate process. [0004] The hydrocracking catalyst is a dual-functional catalyst with cracking and hydrogenation performance, its cracking performance is provided by the carrier (including zeolite), and the hydrogenation function is provided by VIB and / or Group VIII metals, the hydrogenation performance and cracking performance are different Coordinated to form catalysts with different activities and selectivities...

Claims

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Application Information

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IPC IPC(8): C01B39/24
Inventor 阮彩安尹泽群
Owner CHINA PETROLEUM & CHEM CORP
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