Methanol cracking catalyst and preparation method thereof

A methanol cracking and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as high cost, and achieve short reaction time and high reaction efficiency. , the effect of high methanol conversion rate

Inactive Publication Date: 2013-06-19
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst of the invention has the advantages of low temperature, high activity, high CO selectivity, simple process, and no pollution, but requires more expensive plasma equipment

Method used

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  • Methanol cracking catalyst and preparation method thereof
  • Methanol cracking catalyst and preparation method thereof
  • Methanol cracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] 1. Preparation of cellulose solution

[0049] 1A) Add 3.5g of sodium hydroxide and 6g of urea to 40.5g of water, stir and dissolve evenly to form a sodium hydroxide / urea aqueous solution, wherein the mass percentage content of sodium hydroxide is 7%, and the mass percentage concentration of urea is 12% ; The mass ratio of sodium hydroxide to urea is 7:12;

[0050] 1B) Add 3 g of cellulose into the above sodium hydroxide / urea solution, and stir to obtain a uniformly dispersed cellulose solution, wherein the mass percentage concentration of cellulose in the cellulose solution is 6%.

[0051] 2. Ultrasonic treatment

[0052] 2A) Add 0.34g of copper chloride and 10ml of the above cellulose solution to 30ml of water, stir evenly until there is no precipitation, and prepare a suspension, wherein the amount of copper ion added to the cellulose solution is 5mL per mmol; The amount of water added by copper ions is 15mL;

[0053] 2B) Put the suspension into an ultrasonic react...

Embodiment 2

[0062] In addition to the preparation of the cellulose solution, the amount of cellulose used is 3.522g, and the mass percentage concentration of the cellulose solution is 7.044%; the copper salt in the ultrasonic treatment process is copper nitrate, and the mass of copper nitrate is 0.241g. The amount of ions added to the cellulose solution is 10mL; the amount of water added per millimolar of copper ions is 30mL, and the temperature is 90±2°C; the frequency of ultrasonic treatment is 24kHz; The time is 1S (on), the ultrasonic stop generation time (ie intermittent time) is 1S (off), and the ultrasonic treatment time is 20min; the calcination temperature during the calcination treatment is 400 ° C, and the calcination time is 6h, the rest is the same as Example 1 .

[0063] The composition and purity of the prepared copper-based methanol cracking catalyst were analyzed by X-ray diffraction. image 3 shown. The X-ray diffraction pattern of the product shows that the product co...

Embodiment 3

[0065] In addition to the process of preparing the cellulose solution, 5.0g of sodium hydroxide and 7.5g of urea were added to 37.5g of water to form a sodium hydroxide / urea solution, wherein the mass percent content of sodium hydroxide was 10%, and the mass percent concentration of urea was 15%; the mass ratio of sodium hydroxide to urea is 10:15; the dosage of cellulose is 3.522g, and the mass percentage concentration of the cellulose solution is 7.044%; the copper salt in the ultrasonic treatment process is copper acetate, and the amount of copper acetate is The mass is 0.199g, the amount of cellulose solution added per millimoles of copper ions is 10mL; the amount of water added per millimoles of copper ions is 30mL, the temperature is 90±2℃; the frequency of ultrasonic treatment is 20kHz; the pulse time of ultrasonic waves It is 5S:5S, that is, the duration of the ultrasonic wave is 5S (on), the ultrasonic stop generation time (i.e. intermittent time) is 5S (off), and the ...

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Abstract

The invention provides a methanol cracking catalyst and a preparation method thereof. The preparation method comprises the steps of: by taking copper salt and cellulose as raw materials and sodium hydroxide / urea water solution as a solvent, and carrying out fast preparing by adopting an ultrasonic treatment method; and preparing the methanol cracking catalyst by carrying out forging in inert atmosphere. The methanol cracking catalyst prepared by utilizing the preparation method has the advantages that the catalytic activity is strong, the selectivity and the stability are high, the methanol conversion rate is high, the selectivity of H2+CO in products is high, and the application prospect in the field of methanol catalytic cracking is wide.

Description

technical field [0001] The invention relates to the field of low-carbon alcohol catalytic cracking, in particular to a Cu catalyst for methanol cracking and a preparation method thereof. Background technique [0002] The methanol cracking product is syngas, which is the basic raw material for chemical production and the protective gas in the heat treatment industry. At present, methanol cracking catalysts mainly include precious metal and non-precious metal systems. The precious metal system is mainly catalysts such as Pd, Pt, Rh, etc. For example, the authorized publication number is CN1098123C. The invention patent discloses a methanol low-temperature cracking catalyst prepared by an impregnation method or an ion exchange method. The catalyst is composed of the following raw materials by weight: Pd2-3%, alkene element 22-35%, γ-Al 2 O 3 62-76%. Although the catalyst has the characteristics of low methanol cracking reaction temperature, high activity, good stability, hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C01B3/22
Inventor 马明国孙少龙付连花董闫闫邓甫孙润仓
Owner BEIJING FORESTRY UNIVERSITY
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