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a high co 2 Preparation method of catalyst for methanol production from synthesis gas

A technology of CO2 and synthesis gas, which is applied in the field of catalysis, can solve the problems of difficult control of preparation conditions, many factors for performance improvement investigation and adjustment, and difficult molding of catalysts, etc., to achieve stable activity specific surface area, superior anti-sintering ability, and improved The effect of hydrothermal stability

Active Publication Date: 2021-08-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The introduction of auxiliary components increases the composition of the catalyst, and it is difficult to guarantee the repeatability of catalyst preparation. There are many factors that need to be investigated and adjusted when improving performance.
The preparation conditions of the citric acid complex combustion method are difficult to control, and the prepared catalyst is not easy to shape. In addition, in order to ensure the effect, citric acid is usually excessive, which will produce a large amount of CO during the combustion process. 2 gas

Method used

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  • a high co <sub>2</sub> Preparation method of catalyst for methanol production from synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Be that 8:1:0.45 take copper nitrate, zinc nitrate and aluminum nitrate according to copper / zinc / aluminum element mol ratio and be dissolved in deionized water, obtain the copper-zinc-aluminum solution that the amount concentration of total substance is 1mol / L, at 60 ℃ under vigorous stirring, add 0.5mol / L sodium hydroxide solution dropwise to the copper-zinc-aluminum solution until pH=7.0 in the precipitation solution, stir and age for 30 minutes, then wash to remove sodium, dry overnight at 90℃, and roast at 250℃ After 4 hours, powder 1 was obtained, and the specific surface area of ​​powder 1 was measured to be 120m by low-temperature nitrogen adsorption and desorption technology. 2 / g, weigh 10g of powder 1 as the raw material for subsequent steps.

[0020] Take silica sol and aluminum nitrate to prepare 100mL silicon-aluminum mixed solution, so that the total mass of silicon and aluminum in the solution is 0.12g, and the molar ratio of silicon / aluminum is 1:4; imme...

Embodiment 2

[0023] Take copper nitrate, zinc nitrate and aluminum nitrate according to copper / zinc / aluminum element mol ratio is 7:1:0.8 and be dissolved in deionized water, obtain the copper-zinc-aluminum solution that the amount concentration of total substance is 1mol / L, at 65 Under vigorous stirring at ℃, add 1.0mol / L sodium carbonate solution dropwise to the copper-zinc-aluminum solution until pH=7.2 in the precipitated solution, stir and age for 30 minutes, then wash to remove sodium, dry overnight at 100℃, and roast at 300℃ for 3h , to obtain powder 1, the specific surface area of ​​powder 1 measured by low-temperature nitrogen adsorption and desorption technology is 90m 2 / g, weigh 10g of precursor a as the raw material for subsequent steps.

[0024] Take silica sol and aluminum nitrate to prepare 100mL silicon-aluminum mixed solution, so that the total mass of silicon and aluminum in the solution is 0.45, and the molar ratio of silicon / aluminum is 1:3; 10g of powder 1 is immersed...

Embodiment 3

[0027] Take copper nitrate, zinc nitrate and aluminum nitrate according to copper / zinc / aluminum element mol ratio is 5:1:0.9 and be dissolved in deionized water, obtain the copper-zinc-aluminum solution that the amount concentration of total substance is 1mol / L, at 65 Under vigorous stirring at ℃, add 1.2mol / L sodium carbonate solution dropwise to the copper-zinc-aluminum solution until pH = 7.2 in the precipitated solution. After stirring and aging for 30 minutes, wash to remove sodium, dry overnight at 120℃, and roast at 350℃ for 1 hour , to obtain powder 1, the specific surface area of ​​powder 1 measured by low-temperature nitrogen adsorption and desorption technology is 91m 2 / g, weigh 10g of precursor a as the raw material for subsequent steps.

[0028] Take silica sol and aluminum nitrate to prepare 100mL silicon-aluminum mixed solution, so that the total mass of silicon and aluminum in the solution is 0.854g, and the molar ratio of silicon / aluminum is 1:2; immerse 10g ...

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Abstract

The invention belongs to the technical field of catalysis, and in particular relates to a high CO 2 The invention discloses a preparation method of a catalyst for producing methanol from synthesis gas. Prepare powder 1 containing copper oxide and zinc oxide by co-precipitation method; use chemical deposition method to cover the precipitate of silicon and aluminum on powder 1 to obtain powder 2; treat catalyst powder 2 with reagent, and then shape get the catalyst. The catalyst prepared by this method has good hydrothermal stability, and it can be 2 In the synthesis gas-to-methanol reaction, the active specific surface area of ​​the catalyst and the methanol yield can be well maintained.

Description

technical field [0001] The invention belongs to the technical field of catalysis, in particular to a high CO 2 The invention discloses a preparation method of a catalyst for methanol production from synthesis gas. Background technique [0002] CO is the main greenhouse gas in the atmosphere 2 With the rapid development of industry and the massive consumption of fossil energy, it is increasing year by year, and has brought a series of adverse effects and potential disasters to the ecological environment. Reduce atmospheric CO 2 Concentration has become a topic of concern worldwide. In emphasizing CO 2 While reducing emissions, pay more attention to CO 2 comprehensive utilization. Industrial Admiral CO 2 As a component mixed into the synthesis gas as the raw material gas for methanol synthesis, the CO in it can be 2 Catalytic conversion to methanol, is CO 2 A way of chemical utilization. But considering CO 2 The specificity of the reaction of hydrogenation to methan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/03B01J37/08B01J37/10B01J29/072B01J35/10B01J37/02B01J37/18C07C29/154C07C31/04
CPCB01J29/072B01J35/1014B01J37/0018B01J37/0201B01J37/035B01J37/082B01J37/10B01J37/18C07C29/154C07C31/04Y02P20/52
Inventor 于杨陈海波殷玉圣
Owner CHINA PETROLEUM & CHEM CORP
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