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Preparation method of coal-bed methane deoxidation catalyst

A technology of deoxidation catalyst and gas bed, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of high energy consumption, improve reaction efficiency, The effect of solving the loss problem and preventing waste

Inactive Publication Date: 2019-05-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-noble metals are limited by their activity and need to be reacted at a higher temperature, which consumes a lot of energy.

Method used

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  • Preparation method of coal-bed methane deoxidation catalyst
  • Preparation method of coal-bed methane deoxidation catalyst
  • Preparation method of coal-bed methane deoxidation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to the molar ratio of copper nitrate: aluminum nitrate: methyltriethoxysilane: oxalic acid: 2,5-dihydroxyterephthalic acid: methanol is 0.008: 0.317: 0.0091: 0.034: 0.106: 1, first weigh copper nitrate Add aluminum nitrate and methanol into methanol, stir at 45°C to dissolve it completely, adjust the pH value of the solution to 6; secondly, add methyltriethoxysilane as a silylating agent into the solution; then, mix oxalic acid and 2, 5-dihydroxyterephthalic acid was added into the solution as a compound complexing agent, stirred rapidly to make it evenly mixed, then transferred the solution into a stainless steel reaction kettle lined with polytetrafluoroethylene, and crystallized at 90°C for 8 hours. The crystallized product was washed with ethanol for 5 times, and the obtained material was formed after suction filtration, and then dried at 110° C. for 12 hours. Finally, the obtained material was calcined at 300° C. for 10 h to obtain catalyst 1#.

[0033] ...

Embodiment 2

[0035] According to the molar ratio of manganese nitrate: aluminum nitrate: n-octyltriethoxysilane: succinic acid: 2,5-dihydroxyterephthalic acid: ethanol is 0.029: 0.229: 0.0050: 0.032: 0.076: 1, first weigh Add manganese nitrate and aluminum nitrate into ethanol, stir at 45°C to dissolve them completely, and then adjust the pH of the solution to 6; secondly, add n-octyltriethoxysilane to the solution as a silylating agent; then, add amber Acid and 2,5-dihydroxyterephthalic acid were added to the solution as complex complexing agents, stirred rapidly to make it evenly mixed, then transferred the solution into a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 100°C Crystallized for 12h. The crystallized product was washed 5 times with acetone, and the obtained material was formed after suction filtration, and then dried at 110° C. for 12 hours. Finally, the obtained material was calcined at 300° C. for 8 hours to obtain catalyst 2#.

[0036] C...

Embodiment 3

[0038] According to the molar ratio of ferric nitrate: aluminum nitrate: dichlorodimethylsilane: tartaric acid: 2,5-dihydroxyterephthalic acid: isopropanol is 0.028: 0.195: 0.0074: 0.032: 0.065: 1, first weigh nitric acid Iron and aluminum nitrate were added to isopropanol, stirred at 45°C to dissolve them completely, and the pH of the solution was adjusted to 6; secondly, dichlorodimethylsilane was added to the solution as a silylating agent; then, tartaric acid and Add 2,5-dihydroxyterephthalic acid into the solution as a compound complexing agent, stir rapidly to make it evenly mixed, then transfer the solution into a stainless steel reaction kettle lined with polytetrafluoroethylene, and crystallize at 110°C 16h. The crystallized product was washed with ethanol for 5 times, and the obtained material was formed after suction filtration, and then dried at 110° C. for 12 hours. Finally, the obtained material was calcined at 300°C for 16 hours to obtain catalyst 3#.

[0039]...

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Abstract

The invention discloses a preparation method of a coal-bed methane deoxidation catalyst. The preparation method comprises the following steps of marking at least one metal salt of Mn, Fe, Co, Ni, Cu,Zn and Ce as A, and marking at least one metal salt of Mg, Ca, Ti, Zr and Al as B; mixing a complexing agent, a silylating agent and a solvent to obtain a solution C; crystallizing the solution C; after crystallization, washing, shaping, drying and calcinating the material to obtain the catalyst. The catalyst prepared by the method not only prevents the loss of active components, but also greatlypromotes the uniform distribution of the active components on the catalyst from inside to outside, thereby improving the hydrophobicity of the catalyst and effectively enhancing the reaction performance of the catalyst.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a preparation method of a gas layer deoxidation catalyst. Background technique [0002] my country is a big coal producing country, and a large amount of coalbed methane with different concentrations will be produced every year due to coal production. Developing effective coalbed methane utilization technology and reducing direct methane emissions are the key to building an energy-saving and environmentally friendly sustainable development model in my country and creating a low-carbon economy. an integral part of the system. Combining energy conservation and emission reduction and the improvement of environmental requirements, effectively and reasonably develop coalbed methane, a low-grade energy source, and convert it into usable resources, expand the scope and scale of coalbed methane use, and improve the utilization of coalbed methane Efficiency, which has dual meanings of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/745B01J23/10B01J23/34C10L3/00C10L3/10
Inventor 张信伟李杰王海洋尹泽群刘全杰
Owner CHINA PETROLEUM & CHEM CORP
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