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Activated carbon loaded solid super acidic catalyst and preparation method thereof

A technology of solid super acid and activated carbon, which is applied in the fields of refined hydrocarbon oil and petroleum industry, which can solve the problems of high energy consumption and long heating time, and achieve the effects of large specific surface area, high activity at low temperature and strong acidity

Inactive Publication Date: 2015-01-07
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional method of catalyst roasting is to use a muffle furnace or an electric furnace, which takes a long time to heat and consumes a lot of energy.

Method used

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  • Activated carbon loaded solid super acidic catalyst and preparation method thereof
  • Activated carbon loaded solid super acidic catalyst and preparation method thereof
  • Activated carbon loaded solid super acidic catalyst and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0030] The preparation method of the above-mentioned activated carbon-supported solid superacid catalyst, the raw material weight percentage components are as follows: activated carbon: 50% ~ 85%, ZrOCl 2 ·8H 2 O: 10% to 30%, (NH 4 ) 2 S 2 o 8 Solution: 5% to 25%; the steps are as follows:

[0031] (1), Grind and sieve the activated carbon to 20-40 mesh, set aside;

[0032] (2), according to ZrOCl 2 ·8H 2 The mass ratio of O to ultrapure water is 5% to 30%, and the ZrOCl 2 ·8H 2 O was dissolved in ultrapure water and placed in an ultrasonic cleaner until ZrOCl 2 ·8H 2 O is completely dissolved;

[0033] Then press activated carbon and ZrOCl 2 ·8H 2 O solution mass ratio is 35%-45%, pour activated carbon into completely dissolved ZrOCl 2 ·8H 2 In the solution of O, after immersing at room temperature for 10-12 hours, add ammonia water to adjust the pH to 9-10 under the condition of magnetic stirring, obtain a precipitate, and age for 10-12 hours; then wash with u...

Embodiment 1

[0038] The preparation method of activated carbon supported solid superacid catalyst comprises the following steps:

[0039] (1), Grind and sieve the activated carbon to 20-40 mesh, set aside;

[0040] (2), according to ZrOCl 2 ·8H 2 The mass ratio of O to ultrapure water is 15%, ZrOCl 2 ·8H 2 O was dissolved in ultrapure water and placed in an ultrasonic cleaner until ZrOCl 2 ·8H 2 O is completely dissolved;

[0041] Then press activated carbon and ZrOCl 2 ·8H 2 O solution mass ratio is 40%, pour activated carbon into completely dissolved ZrOCl 2 ·8H 2 In the solution of O, immerse at room temperature for 10-12 hours, add ammonia water to adjust the pH to 9-10 under the condition of magnetic stirring, obtain a precipitate, age for 10-12 hours, wash with ultra-pure water under the condition of suction filtration, and wash until nothing Cl-so far (with AgNO 3 detection), dried to obtain amorphous Zr(OH) 4 ;

[0042] (3), use 0.5mol L -1 of (NH 4 ) 2 S 2 o 8 Acti...

Embodiment 2

[0046] The difference from Example 1 is: the temperature finally reached by the microwave heating method in step (4) is used as a variable for roasting, and the roasting temperature is 450 ° C;

[0047] The catalyst prepared above was used in the oxidative desulfurization experiment, and the oxidative desulfurization device is shown in the attached figure 2 , desulfurization rate see attached image 3 .

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Abstract

The invention belongs to the field of petrochemical engineering, and particularly relates to an activated carbon loaded solid super acidic catalyst and a preparation method thereof. The prepared catalyst can be used for catalytic oxidation desulfurization of oil. According to the activated carbon loaded solid super acidic catalyst, activated carbon is taken as a carrier, ZrO2 is taken as an active component, and a (NH4)2S2O8 solution is taken as an accelerant. The activated carbon loaded solid super acidic catalyst is characterized by comprising components of raw materials in percentage by weight as follows: 50%-85% of activated carbon, 10%-30% of ZrOCl2*8H2O and 5%-25% of the (NH4)2S2O8 solution. The activated carbon loaded solid super acidic catalyst prepared by the invention has high acidity, large specific surface area and high activity under the low-temperature condition and is non-toxic, and dibenzothiophene can be selectively and effectively oxidized into corresponding sulfone substances with higher polarity; and the catalyst is easy to separate and recycle, the quality of fuel oil is not influenced, raw materials are sufficiently utilized, and the catalyst has better stability.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to an activated carbon-loaded solid superacid catalyst and a preparation method thereof. The prepared catalyst can be used for catalytic oxidation desulfurization of oil products. Background technique [0002] Combustion of organic sulfur compounds in diesel will generate SO x , pollute the environment and endanger human health. For this reason, most countries in the world have formulated corresponding regulations to limit the sulfur content in diesel. Since July 2013, my country's diesel market has fully adopted the National III standard, that is, the sulfur content has been increased from 350μg·g -1 down to 150μg·g -1 , starting from January 2015, diesel oil will fully implement the National IV standard, and the sulfur content will be further reduced to 50μg·g -1 . Therefore, it is of great significance to research and develop environmentally friendly oil dee...

Claims

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Application Information

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IPC IPC(8): B01J27/24C10G27/00
Inventor 侯影飞杨冲牟庆平郭宁王然姚刚
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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