Preparation of iron-based catalyst for preparing alpha-alkene from carbon dioxide through hydrogenation, catalyst and application

A technology of iron-based catalyst and carbon dioxide, which is applied in the direction of catalyst activation/preparation, hydrocarbon production from carbon oxides, carbon compound catalysts, etc. It can solve the problems of non-green, economical, waste of energy, complicated process, etc., and reduce the cost of catalysts , Simplified complex procedures, simple preparation process

Inactive Publication Date: 2018-06-12
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

The addition of the above traditional metal additives comes from reagents such as nitrate or carbonate with high cost. The process of preparing the catalyst is relatively complicated, and a lot of energy will be wasted in the preparation process, causing environmental pollution, which is not in line with green and economical. production concept

Method used

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  • Preparation of iron-based catalyst for preparing alpha-alkene from carbon dioxide through hydrogenation, catalyst and application
  • Preparation of iron-based catalyst for preparing alpha-alkene from carbon dioxide through hydrogenation, catalyst and application
  • Preparation of iron-based catalyst for preparing alpha-alkene from carbon dioxide through hydrogenation, catalyst and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Carbon dioxide hydrogenation catalyst preparation process is as follows:

[0024] Fresh corn cob powder is first pretreated by roasting at 500°C for 3 hours in a flowing air atmosphere to remove carbon-containing organic compounds and obtain khaki additives rich in trace minerals powder. Using a one-step hydrothermal synthesis method, weigh 4.50 g of glucose and 5.10 g of ferric nitrate nonahydrate, dissolve them in deionized water, and stir them thoroughly for 1 hour. The resulting mixed solution was transferred to a 100 mL hydrothermal synthesis reactor with a polytetrafluoroethylene liner. The reactor is sealed and transferred to a hydrothermal synthesis device (also known as a homogeneous reactor). The condition control of the hydrothermal synthesis process is 120° C. for 20 hours. The obtained products were washed several times with deionized water and absolute ethanol, respectively. Finally, the product is dried for more than 12 hours, taken out and recorded a...

Embodiment 2

[0028] Carbon dioxide hydrogenation catalyst preparation process is as follows:

[0029] Fresh corn cob powder is first pretreated by roasting at 500°C for 3 hours in a flowing air atmosphere to remove carbon-containing organic compounds and obtain khaki additives rich in trace minerals powder. Using a one-step hydrothermal synthesis method, weigh 4.50 g of glucose and 5.10 g of ferric nitrate nonahydrate, dissolve them in deionized water, and stir them thoroughly for 1 hour. The resulting mixed solution was transferred to a 100 mL hydrothermal synthesis reactor with a polytetrafluoroethylene liner. The reactor is sealed and transferred to a hydrothermal synthesis device (also known as a homogeneous reactor). The condition control of the hydrothermal synthesis process is 120° C. for 20 hours. The obtained products were washed several times with deionized water and absolute ethanol, respectively. Finally, the product is dried for more than 12 hours, taken out and recorded a...

Embodiment 3

[0032] Carbon dioxide hydrogenation catalyst preparation process is as follows:

[0033] Fresh corn cob powder is first pretreated by roasting at 500°C for 3 hours in a flowing air atmosphere to remove carbon-containing organic compounds and obtain khaki additives rich in trace minerals powder. Using a one-step hydrothermal synthesis method, weigh 4.50 g of glucose and 5.10 g of ferric nitrate nonahydrate, dissolve them in deionized water, and stir them thoroughly for 1 hour. The resulting mixed solution was transferred to a 100 mL hydrothermal synthesis reactor with a polytetrafluoroethylene liner. The reactor is sealed and transferred to a hydrothermal synthesis device (also known as a homogeneous reactor). The condition control of the hydrothermal synthesis process is 120° C. for 20 hours. The obtained products were washed several times with deionized water and absolute ethanol, respectively. Finally, the product is dried for more than 12 hours, taken out and recorded a...

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Abstract

The invention relates to a preparation method of an iron-based catalyst for preparing alpha-alkene from carbon dioxide through selective hydrogenation. According to the catalyst disclosed by the invention, Fe serves as a main active ingredient, meanwhile, multiple assistants are added for modification and are physically mixed with a common Fe catalyst directly, and the introduction mode is simple.The assistants are derived from mineral matter enriched waste biomass powder resulting from high-temperature roasting and are wide in source and simple in treatment. The catalyst has high alkene selectivity to a carbon dioxide hydrogenation reaction, and alpha-alkene serves as a primary product. According to the application, waste biomass can be introduced into the catalyst for resource-converting utilization as a chemical assistant, and a new way of thinking is provided for the efficient conversion process of high-value-added chemicals from carbon dioxide through selective hydrogenation.

Description

technical field [0001] The invention designs a method for preparing an iron-based catalyst for carbon dioxide hydrogenation to α-olefins, that is, a method for preparing an iron-based catalyst that has a biological aid effect and can be used for carbon dioxide selective catalytic hydrogenation to α-olefins. Background technique [0002] For nearly a hundred years, the widespread use of oil, coal and natural gas has enabled the rapid development of human society, followed by the continuous increase in the concentration of carbon dioxide in the atmosphere, which has led to a series of ecological and environmental problems, such as ocean acidification and The greenhouse effect has increasingly aroused the widespread concern of the whole human society. CO 2 Catalytic hydrogenation to produce hydrocarbons such as methane, methanol, formic acid and olefins is of great significance for reducing carbon dioxide emissions, and at the same time realizes CO 2 Conversion processes to h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/78C07C1/12C07C9/04C07C11/04
CPCY02P20/52B01J23/78B01J37/04B01J37/082B01J37/10C07C1/12C07C2523/78C07C9/04C07C11/04
Inventor 郭立升孙剑葛庆杰徐恒泳
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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