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Catalyst, and preparation method and application thereof

A catalyst and binder technology, applied in the field of syngas to low-carbon alcohol, can solve the problem of high selectivity, achieve the effects of reduced selectivity, inhibition of aggregation and sintering, and long service life

Active Publication Date: 2017-03-15
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The main purpose of the present invention is to provide a catalyst, its preparation method and application, to solve the CO 2 more selective questions

Method used

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  • Catalyst, and preparation method and application thereof

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preparation example Construction

[0027] In order to obtain the catalyst with the above properties, the present invention also provides a preparation method of the catalyst, the preparation method comprising: precipitating a mixture of copper-containing soluble salt, iron-containing soluble salt and lanthanum-containing soluble salt, dispersant and precipitant After reacting and filtering, a filter cake is obtained; and the filter cake is mixed with water to form a slurry, and after the above slurry is mixed with a binder, the catalyst is obtained by drying and roasting; wherein the dispersant and the binder are independently selected from silicon Sols and / or siliceous soluble salts.

[0028] Adding a dispersant during the precipitation reaction in the above preparation method is beneficial to uniformly disperse the main active component, and further helps to inhibit the aggregation and sintering of the same component. An appropriate ratio of iron to copper enables the two to effectively synergize, and when th...

Embodiment 1

[0045] Weigh 362.4g Cu (NO 3 ) 2 ·3H 2 O, 424.2gFe(NO 3 ) 3 9H 2 O, 129.9gLa(NO 3 ) 3 ·6H 2 O, the concentration is 25% silica sol 36.01g, add 5L deionized water and mix and stir evenly to obtain a mixture.

[0046] Precipitate the above mixture with a precipitant (potassium carbonate solution) at 60°C and a pH of 7.2. After the reaction, age at 50°C for 4 hours, fully filter the precipitate to obtain a filter cake, and wash the filter cake until The conductivity of the washing liquid is below 100um / cm.

[0047] The catalyst filter cake was added to deionized water for beating, and the slurry was kept at normal temperature; 216.07 g of silica sol with a concentration of 25 wt % was heated to 60 ° C, and added to the slurry in a stirring state by positive addition (the weight percentage in the catalyst was 8.43%).

[0048] The type of spray drying tower atomizer is a centrifugal atomizer, and the fluid contact method between the raw material slurry and the dry hot air ...

Embodiment 2

[0051] The molar weight of La in catalyst element ratio is adjusted, promptly weighs 362.4g Cu (NO 3 ) 2 ·3H 2 O, 424.2gFe(NO 3 ) 3 9H 2 O, 12.99gLa(NO 3 ) 3 ·6H 2 O, concentration is 25wt% silica sol 36.01g, all the other conditions are identical with embodiment 1, the performance evaluation result that obtains is shown in Table 1.

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Abstract

The invention provides a catalyst, and a preparation method and an application thereof. The catalyst comprises an active component and silicon dioxide; the composition of the active component is represented by the general formula (I): CuaFebLacSidOx, wherein a, b, c, d and x successively represent the atomic molar number of elements Cu, Fe, La, Si and O, a is 1, b is 0.1-3, c is 0.01-2, d is 0.01-2, x is determined by the oxygen number in oxides of the elements Cu, Fe, La and Si, and silicon dioxide accounts for 1-30% of the total weight of the catalyst. The prepared catalyst has the advantages of low reaction temperature and pressure, low carbon dioxide selectivity, long service life and the like.

Description

technical field [0001] The invention relates to the field of synthesis gas to produce low-carbon alcohols, in particular to a catalyst, its preparation method and application. Background technique [0002] With the continuous consumption of petroleum resources and the oil crisis that broke out in the 1970s, it is urgent to actively develop and seek new energy systems and chemical products. Among them, C 1 Chemistry flourished. Among the many processes of syngas conversion, the direct preparation of mixed alcohols from syngas has attracted much attention. Low carbon mixed alcohol (C 1 ~C 6 Due to its high octane number, it can be used as a clean gasoline additive to replace carcinogenic dimethyl tert-butyl ether (MTBE), and can also be used as an excellent clean vehicle fuel and oil substitute , and it has huge economic value as a chemical itself or as a raw material for bulk chemical production. Therefore, in the context of the increasingly tight supply of fossil crude ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83C07C29/156C07C31/02
Inventor 李导舒歌平章序文杨葛灵王洪学
Owner CHNA ENERGY INVESTMENT CORP LTD
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