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Catalyst and preparation method and application thereof

A catalyst, aluminum source technology, applied in the field of catalytic chemistry, can solve the problems of complex preparation process, increase catalyst cost, prolong catalyst preparation cycle, etc., to simplify the preparation process, promote CO dissociation adsorption and carbon chain growth, improve structure and performance effect

Active Publication Date: 2017-09-15
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of additives not only increases the cost of the catalyst, but also prolongs the preparation cycle of the catalyst and makes the preparation process more complicated.

Method used

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  • Catalyst and preparation method and application thereof
  • Catalyst and preparation method and application thereof
  • Catalyst and preparation method and application thereof

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Experimental program
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preparation example Construction

[0032] see figure 1 , the first embodiment of the present invention provides a method for preparing a catalyst, comprising:

[0033] Step S1: providing a first aluminum source and a second aluminum source, and using the first aluminum source and the second aluminum source to prepare a first aluminum sol and a second aluminum sol;

[0034] Step S2: providing a copper source and a zinc source, and mixing the copper source and the zinc source with the first aluminum sol after alcoholysis to obtain sol A containing aluminum, copper, and zinc components;

[0035] Step S3: aging and mixing the sol A and the second aluminum sol to obtain a precursor;

[0036] Step S4: the precursor is heat-treated to obtain the desired catalyst.

[0037] In step S1 of the present invention, the first aluminum source or the second aluminum source can be selected from but not limited to: aluminum nitrate, aluminum sulfate, aluminum chloride, aluminum ammonium sulfate, aluminum silicate, sodium alumin...

no. 1 Embodiment

[0058] Using aluminum nitrate as the first aluminum source, weigh 20g of aluminum nitrate and dissolve it in the first alcohol solution for alcoholysis. The first alcohol solution is a mixed solution of 30mL ethanol, 5mL ethylene glycol and 5mL isopropanol. After alcoholysis Add 70mL of water and 1g of PEG200 to hydrolyze in a constant temperature water bath at 80°C, use nitric acid as the gelling agent and adjust the pH value to 3 to prepare the first stable aluminum sol; use copper nitrate as the copper source and Zinc nitrate is zinc source, takes by weighing 60g copper nitrate and 40g zinc nitrate, and it is dissolved in the second alcoholic solution to form copper-zinc alcoholic solution, and described second alcoholic solution is the mixed solution of 10mL ethanol and 30mL ethylene glycol; Stir and mix the first aluminum sol and the copper-zinc alcohol solution in a constant temperature water bath to obtain Sol A.

[0059] Using aluminum isopropoxide as the second alumin...

no. 2 Embodiment

[0063] The difference between the second specific embodiment and the first specific embodiment is:

[0064] The sol A and the second aluminum sol were stirred and mixed for 1 hour, and then aged. The aging temperature was 20° C., and the aging time was 9 days, so as to prepare a precursor.

[0065] The second specific example prepares and obtains the required catalyst Cat-2.

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Abstract

The invention relates to the technical field of the chemical engineering and in particular to a catalyst and a preparation method and application thereof. The preparation method comprises the following steps: providing a first aluminum source and a second aluminum source, and using the first aluminum source and the second aluminum source to prepare and obtain first aluminum sol and second aluminum sol; providing a copper source and a zinc source, performing the alcoholysis to the copper source and the zinc source, and mixing with the first aluminum sol so as to obtain sol A containing the components of aluminum, copper and zinc; aging and mixing the sol A and the second aluminum sol to obtain a precursor; and performing the heat processing to the precursor so as to obtain the needed catalyst. The preparation method for the catalyst is simple, the cost is low, and ethyl alcohol with higher distribution in total alcohol can be obtained while the method is used for preparing the ethyl alcohol. While the method is applied to prepare the ethyl alcohol by using a slurry reactor synthesis gas method, the cost is reduced, the selectivity of the ethyl alcohol in the total alcohol distribution is improved and the catalytic activity is better.

Description

【Technical field】 [0001] The invention relates to the field of catalytic chemistry, in particular to a catalyst and its preparation method and application. 【Background technique】 [0002] At present, ethanol is widely used in food, medicine, chemical industry, fuel and other industries, and its preparation methods generally adopt grain fermentation method, ethylene hydration method, coal-based synthesis gas preparation, etc. However, the grain fermentation method has the problem of competing with others for food. The ethylene hydration method still uses petroleum as raw material. Based on the current energy situation in my country, which is rich in coal and less oil, the development of ethylene hydration method to prepare ethanol has been restricted. At present, it is believed that the preparation of ethanol from coal-based syngas has obvious advantages and industrial application prospects. [0003] Catalysts for preparing ethanol from coal-based syngas are now mostly using...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80C07C29/154C07C31/08
CPCB01J23/80C07C29/154C07C31/08
Inventor 黄伟芦潇张乾游向轩张琳刘雷强
Owner TAIYUAN UNIV OF TECH