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Catalyst for synthosizing methyl alcohol from syngas and its preparation method and application

A technology for synthesizing methanol and catalysts, which is applied in the preparation of organic compounds, catalysts for physical/chemical processes, metal/metal oxide/metal hydroxide catalysts, etc. effect of life

Inactive Publication Date: 2009-10-14
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the preparation of methanol catalyst will affect the life of the catalyst
Most of the preparation methods of existing methanol catalysts use carbonate and ammonia as precipitants, such as: German patent DD296855 and Canadian patent CA1011325 disclose a preparation technology for synthesizing methanol catalysts, which is the aqueous solution of soluble salts of copper, zinc and aluminum Preparation of catalyst by co-precipitation with alkali metal carbonate; Chinese patent CN1131102C discloses a preparation method of methanol catalyst, which is to mix Cu / Zn / Al mixed solution with acidic carbonate solution to obtain a highly active matrix; China Patent CN1176747C points out a method for preparing a copper-based methanol synthesis catalyst carrier, using 0.5-20% ammonia water as a precipitant to prepare a methanol catalyst, and the above-prepared catalyst has a shorter service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 182.0 g Cu(NO 3 ) 2 ·3H 2 O, 109.7 g Zn(NO 3 ) 2 ·6H 2 O and 36.8 g Al(NO 3 ) 3 9H 2 O is prepared into 0.5M aqueous solution respectively, and the composition mixture is counted as A liquid; 23.6 grams of Na 2 SiO 3 9H 2 O is prepared into a 0.5M aqueous solution, which is counted as B liquid; anhydrous Na 2 CO 3 Prepared into 0.5M aqueous solution, counted as C liquid.

[0021]Add distilled water with a volume ratio of 1:3 to the reactor, and heat the water to 50°C. The two liquids A and B are introduced into the reactor at the same time, and liquid C is added at the same time to adjust the pH value of the precipitation liquid to 10 and start co-precipitation. The obtained precipitate was suction filtered and washed until no sodium particles were detected, and the moisture in the filter cake was replaced with absolute ethanol. Perform chromatographic analysis on the replaced suction filtrate until the water content is less than 0.1% (wt.). The obtai...

Embodiment 2

[0025] Put 151.7 g Cu(NO 3 ) 2 ·3H 2 O, 146.2 g Zn(NO 3 ) 2 ·6H 2 O and 51.5 g Al(NO 3 ) 3 9H 2 O is prepared into 0.7M aqueous solution respectively, and the composition mixture is counted as A liquid; 4.3 grams of Na 2 WO 4 2H 2 O is prepared into a 0.7M aqueous solution, which is counted as B liquid; anhydrous Na 2 CO 3 Prepared into 0.7M aqueous solution, counted as C liquid.

[0026] Add distilled water with a volume ratio of 1:5 to liquid A into the reactor, and heat the water to 70°C. Two kinds of liquids A and B are introduced into the reactor, and liquid C is added at the same time to adjust the pH value of the precipitation liquid to 6, and co-precipitation begins. The obtained precipitate was suction filtered and washed until no sodium particles were detected, and the moisture in the filter cake was replaced with absolute ethanol. Perform chromatographic analysis on the replaced suction filtrate until the water content is less than 0.1% (wt.). The obt...

Embodiment 3

[0030] Put 121.4 g of Cu(NO 3 ) 2 ·3H 2 O, 182.8 g Zn(NO 3 ) 2 ·6H 2 O and 22.1 g Al(NO 3 ) 3 9H 2 O is prepared into 1M aqueous solution respectively, and the composition mixture is counted as A liquid; 23.6 grams of Na 2 SiO 3 9H 2 O, 2.8 g Na 2 WO 4 2H 2 O was prepared into 1M aqueous solution respectively, and the composition mixture was counted as B liquid; the anhydrous Na 2 CO 3 Prepared into a 1M solution, counted as C solution.

[0031] Add distilled water with a volume ratio of 1:4 to liquid A into the reactor, and heat the water to 60°C. The two liquids A and B are introduced into the reactor, and at the same time, liquid C is added to adjust the pH of the precipitation liquid to 8, and co-precipitation begins. The obtained precipitate was suction filtered and washed until no sodium particles were detected, and the moisture in the filter cake was replaced with absolute ethanol. Perform chromatographic analysis on the replaced suction filtrate until ...

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PUM

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Abstract

A catalyst for preparing methanol from synthetic gas is proportionally prepared from CuO, ZnO, Al2O3 and one or more of SiO2, WO3 and HAlO2 through co-deposition. It has long service life.

Description

technical field [0001] The invention relates to a methanol catalyst, a preparation method and an application, in particular to a catalyst for synthesizing methanol from synthesis gas, a preparation method and an application. Background technique [0002] With the rise of international crude oil prices and the increase of my country's dependence on imported oil, according to the specific national conditions of my country's abundant coal, it is imperative to develop high-quality gasoline from coal. This process may quickly form a series of industries and high-tech projects, which will become new economic growth points and ensure my country's energy security and sustainable development of the national economy. Coal-to-liquids has experienced more than 80 years of development since Fischer and Tropsch discovered in 1923 that synthesis gas was catalyzed to generate liquid hydrocarbons. In terms of reaction mechanism, there are two main aspects: one is to directly synthesize hydr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/835B01J23/80B01J23/85C07C29/154C07C31/04
CPCY02P20/52
Inventor 谭猗生解红娟韩怡卓潘俊轩赵霞
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI