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Molecular sieve compound and composite material and preparation methods and application thereof

A composite material and molecular sieve technology, applied in the field of molecular sieve composites and composite materials and their preparation, can solve the problems of difficulty in taking into account the desulfurization rate and the penetrating sulfur capacity, and achieve the effects of good adsorption, good regeneration performance, and promotion of development.

Pending Publication Date: 2021-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a molecular sieve composite and composite material and its preparation method and application

Method used

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  • Molecular sieve compound and composite material and preparation methods and application thereof
  • Molecular sieve compound and composite material and preparation methods and application thereof
  • Molecular sieve compound and composite material and preparation methods and application thereof

Examples

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preparation example Construction

[0051] According to the method for preparing the molecular sieve composite of the present invention, the amount of the aluminum precursor and the rare earth modified molecular sieve is such that the weight ratio between the aluminum element and the molecular sieve in the obtained molecular sieve composite is preferably (12-28):100.

[0052] According to the method for preparing a molecular sieve composite of the present invention, the amount of the precursor of the alkaline earth metal and the rare earth modified molecular sieve makes the weight ratio between the alkaline earth metal element and the molecular sieve in the obtained molecular sieve composite preferably (0.6-2.1):100 .

[0053] According to the method for preparing the molecular sieve composite of the present invention, the amount of the rare earth element is such that the weight ratio between the rare earth element and the molecular sieve in the obtained molecular sieve composite is preferably (3.7-9.3):100.

[...

Embodiment 1

[0162] Take by weighing 800g of molecular sieve former powder (NaY molecular sieve, silicon-aluminum ratio is 5, specific surface area is 850m 2 / g, the pore volume is 0.32ml / g) is placed in a beaker, and distilled water is added to make the water / molecular sieve weight ratio reach about 8. Weigh 76g cerium chloride (CeCl 3 ·6H 2 O), 30g lanthanum chloride (LaCl 3 ) to make rare earth chloride solution. Add the rare earth chloride solution into the beaker and stir evenly, adjust the pH value to about 4 with hydrochloric acid, place the beaker in a water bath and heat it to about 80°C, exchange for 1 hour while stirring, and the exchange process ends. Cool, filter, wash, dry. In order to increase the exchange depth of the rare earth ions, the molecular sieve after the first exchange was calcined at 550° C. for 4 hours. After roasting, the molecular sieve is exchanged twice according to the above method to obtain a modified molecular sieve.

[0163] Gained modified molecul...

Embodiment 2-7

[0166] The adsorbent was prepared according to the various steps and conditions of Example 1, only the composition, preparation conditions or concentration of the impregnation solution were changed. The specific preparation conditions are shown in Table 1. The contents of each metal oxide and molecular sieve in the final adsorbent product are shown in Table 2. As shown, the measurement results of the specific surface area and the like are shown in Table 4.

[0167] Table 1

[0168]

[0169] Table 2

[0170]

[0171]

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Abstract

The invention relates to the technical field of desulfurization, and discloses a molecular sieve compound and a composite material as well as preparation methods and application thereof. The molecular sieve compound contains an oxide of aluminum, an oxide of alkaline earth metal and a rare earth modified molecular sieve, wherein the rare earth modified molecular sieve is a molecular sieve doped with rare earth elements, the weight ratio of the oxide of aluminum to the oxide of alkaline earth metal to the rare earth elements to the molecular sieve is (8-35): (0.5-3): (2.5-10): 100, and the weight of the rare earth elements is calculated by oxide. The composite material contains a molecular sieve compound and an active component loaded on the molecular sieve compound, wherein the molecular sieve compound contains an oxide of aluminum, an oxide of alkaline earth metal and a rare earth modified molecular sieve, and the rare earth modified molecular sieve is a molecular sieve doped with a rare earth element. The invention also discloses preparation methods of the molecular sieve compound and the composite material and application of the molecular sieve compound and the composite material in desulfurization. The composite material disclosed by the invention has relatively high breakthrough sulfur capacity as an adsorbent.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to molecular sieve composites and composite materials, their preparation methods and applications. Background technique [0002] SO 2 is the main cause of acid rain; SO 2 It can destroy the physiological functions of plants, slow down the growth of crops and trees; the human body inhales a high concentration of SO 2 Gas, will have a strong irritant effect on the respiratory tract. SO 2 As the main air pollutants, it has been widely paid attention to by people. According to reports SO 2 The discharge has caused 40% of my country's land area to be harmed by acid rain, and the annual loss caused by it is as high as 110 billion yuan. Therefore, control pollution, reduce SO 2 Emissions are an important task for the sustainable development of my country's economy and society. [0003] Industrial heating furnace flue gas, sulfur tail gas and catalytic cracking regeneration ...

Claims

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Application Information

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IPC IPC(8): B01J20/18B01J20/30B01D53/75B01D53/48B01D53/02B01D53/50F23G7/06C01B17/04C01B17/16
CPCB01J20/08B01J20/041B01J20/186B01J20/06B01J20/0207B01D53/02B01D53/75B01D53/48B01D53/50F23G7/06C01B17/04C01B17/16C01B17/164B01J2220/4806B01J2220/42B01D2257/302B01D2253/108B01D2253/1124B01D2258/0283F23G2209/14F23G7/07F23J2215/20F23J2219/30C01B17/56C01B17/167B01J20/3007B01J20/3078B01J20/28011B01J20/04B01J20/28064B01J20/28071B01D53/508B01D53/82B01D2253/116B01D2253/25B01D2253/302B01D2258/02Y02P20/52B01D2253/306B01D2253/311B01J20/18B01J29/061B01J29/084
Inventor 袁辉志刘爱华刘剑利徐翠翠刘增让陶卫东常文之吕才山
Owner CHINA PETROLEUM & CHEM CORP
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