Catalyst for synthesizing methanol from carbon dioxide hydrogenation

A carbon dioxide and methanol synthesis technology, applied in the field of energy chemistry, can solve the problems of expensive metal Pd, difficult industrial process, sintering deactivation, etc., and achieve the effect of good environmental value, low production cost and easy control of conditions

Active Publication Date: 2021-03-16
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although many catalysts have been used for CO 2 In the process of hydrogenation to methanol, common CO 2 Hydrogenation catalysts mainly include Cu-based catalysts, Pd-based catalysts, and some recently reported new catalysts, among which Cu-based catalysts are mainly Cu / ZnO / Al 2 o 3 (Kattel et al., Science 355, 1296–1299 (2017)), Cu / ZrO 2 (Larmier et al., Angew.Chem.129, 2358–2363 (2017)), etc., but this type of catalyst is easily affected by water in the reaction atmosphere and deactivated by sintering; Pd-based catalysts such as Pd / ZnO (Liao et al. al., Green Chem.19, 270–280(2017)), Pd / In 2 o 3 (Rui et al.,Applied Catalysis B:Environmental.218,488-497(2017)), etc., due to the high price of metal Pd, it is difficult to use in industrial processes
Molybdenum disulfide has been widely used in the process of hydrodesulfurization (HDS) due to its excellent anti-sulfur properties and cheap and easy-to-obtain characteristics. not reported

Method used

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  • Catalyst for synthesizing methanol from carbon dioxide hydrogenation
  • Catalyst for synthesizing methanol from carbon dioxide hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. 20ml aqueous solution of 0.73mmol ammonium molybdate and 10ml carbon disulfide are sealed in a 40ml autoclave under nitrogen protection;

[0019] 2. Keep the autoclave in (1) at 400°C for 4 hours to obtain a sample solution;

[0020] 3. (2) the obtained sample solution was treated in 30% (mass concentration) ammonia solution for 3 hours, then washed with water and ethanol for many times and suction filtration to obtain the sample;

[0021] 4. After drying the sample obtained in (3) at 100° C. for 12 hours, a sample of catalyst Cat1 was obtained.

[0022] For the convenience of comparison, the evaluation conditions and results of the application of the catalyst for carbon dioxide to methanol are summarized in the application example, and the evaluation results are listed in Table 1.

Embodiment 2

[0024] 1. Seal 0.73mmol of ammonium molybdate and 10ml of carbon disulfide into a 40ml autoclave under nitrogen protection;

[0025] 2. Keep the autoclave in (1) at 400°C for 4 hours to obtain a sample solution;

[0026] 3. Put the sample solution obtained in (2) in 6 mol L -1 Treated in NaOH solution for 3 hours, then washed with water and ethanol for several times and suction filtered to obtain the sample;

[0027] 4. After drying the sample obtained in (3) at 100° C. for 12 hours, a sample of catalyst Cat2 was obtained.

[0028] For the convenience of comparison, the evaluation conditions and results of the application of the catalyst for carbon dioxide to methanol are summarized in the application example, and the evaluation results are listed in Table 1.

Embodiment 3

[0030] 1. 1mmol ammonium molybdate and 30mmol thiourea are dissolved in 35ml water, sealed in 100ml reactor under nitrogen protection;

[0031] 2. The reactor in (1) was kept at 200°C for 24 hours to obtain the sample solution;

[0032] 3. Put the obtained sample solution of (2) in 6 mol L -1 The KOH solution was treated for 3 hours, then washed with water and ethanol for several times and suction filtered to obtain the sample;

[0033] 4. After drying the sample obtained in (3) at 100° C. for 12 hours, a catalyst Cat3 sample was obtained.

[0034] For the convenience of comparison, the evaluation conditions and results of the application of the catalyst for carbon dioxide to methanol are summarized in the application example, and the evaluation results are listed in Table 1.

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Abstract

The invention relates to a catalyst for synthesizing methanol through hydrogenation of carbon dioxide. A purpose of the invention is mainly to solve the problems of low activity and low selectivity ofthe catalyst for preparing methanol through hydrogenation of carbon dioxide in the prior art. According to the invention, molybdenum disulfide is used as the main component of the catalyst for synthesizing methanol through hydrogenation of carbon dioxide, so the catalyst has characteristics of low price, simple and convenient operation, high carbon dioxide conversion rate, high selectivity of methanol in a product, good stability and the like.

Description

technical field [0001] The invention relates to a molybdenum disulfide catalyst and its application in carbon dioxide hydrogenation to synthesize methanol, belonging to the field of energy chemistry. Background technique [0002] CO 2 As a kind of greenhouse gas, with the development of science, technology and industry, its emissions are getting bigger and bigger, resulting in more and more serious greenhouse effect and more and more impact on the environment. Therefore, reducing CO 2 emissions and use of efficient materials to capture and convert CO 2 is crucial. Governments around the world are trying to solve CO by increasing investment 2 The problem lies mainly in two aspects: reducing CO from the source 2 emissions; capture and convert CO 2 It is an industrial product with higher added value. The use of catalytic processes to convert CO 2 Converted to some hydrocarbons or oxyhydrocarbons, which can reduce atmospheric CO 2 It is a current research hotspot, which...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/22B01J27/051B01J29/00C07C29/153C07C31/04
CPCB01J27/051B01J27/224B01J29/00C07C29/153C07C31/04Y02P20/52
Inventor 邓德会胡景庭邓浇成康王野张庆红苏海燕包信和
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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