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Method for transforming methane into other organic matters

A technology for organic matter and methane, applied in organic chemistry methods, chemical instruments and methods, organic oxidation, etc., can solve the problems of volatile, inconvenient industrial production and operation, easy to crystallize, etc., achieve high conversion rate, reduce equipment investment, and avoid volatilization. and crystallization effect

Inactive Publication Date: 2009-12-02
HANERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But these studies all use fuming sulfuric acid as solvent and oxidizing agent, because SO in fuming sulfuric acid 3 With special physical properties, it is easy to volatilize at high temperature and easy to crystallize at low temperature, which causes inconvenience to industrial production and operation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Put 98wt% concentrated sulfuric acid, selenium trioxide, and elemental iodine in a 100 ml pressure reactor. When the temperature of the reactor stabilizes at 180°C, 4 MPa methane is introduced into the reactor. After the temperature and pressure are stabilized, the reactants are stirred, and the pressure in the reactor is monitored by the pressure sensor. When the pressure in the reactor reaches equilibrium (that is, the reaction reaches equilibrium), the stirring is stopped and the reactor water is cooled to room temperature. The gas in the reactor is collected and analyzed by gas chromatography. The liquid in the reactor is sampled for hydrolysis, and then the content of methanol obtained from the hydrolysis is analyzed by liquid chromatography. Through calculation and processing of the analysis results of gas and liquid chromatography, it is concluded that the methanol yield in this reaction process is 85%.

[0027] Among them, concentrated sulfuric acid is 20 ml, iodine...

Embodiment 2

[0029] A mixture of 98 wt% concentrated sulfuric acid and selenic acid, selenium trioxide, and elemental iodine were placed in a 100 ml pressure reactor, and when the temperature of the reactor was stabilized at 200° C., 6 MPa methane was introduced into the reactor. After the temperature and pressure are stabilized, the reactants are stirred, and the pressure in the reactor is monitored by the pressure sensor. When the pressure in the reactor reaches equilibrium (that is, the reaction reaches equilibrium), the stirring is stopped and the reactor water is cooled to room temperature. The gas in the reactor is collected and analyzed by gas chromatography. The liquid in the reactor is sampled for hydrolysis, and then the content of methanol obtained from the hydrolysis is analyzed by liquid chromatography. By calculating and processing the analysis results of gas and liquid chromatography, it is concluded that the methanol yield in this reaction process is 72%.

[0030] Among them, c...

Embodiment 3

[0032] Place trifluoroacetic acid, selenic acid, and methyl iodide in a 100 ml pressure reactor. When the temperature of the reactor stabilizes at 180° C., pass 5 MPa of methane into the reactor. After the temperature and pressure are stabilized, the reactants are stirred, and the pressure in the reactor is monitored by the pressure sensor. After reacting for 2 hours, the stirring was stopped and the reactor was water-cooled to room temperature. The gas in the reactor is collected and analyzed by gas chromatography. The liquid in the reactor is sampled for hydrolysis, and then the content of methanol obtained from the hydrolysis is analyzed by liquid chromatography. By calculating and processing the analysis results of gas and liquid chromatography, it is concluded that the methanol yield in this reaction process is 43%.

[0033] Among them, trifluoroacetic acid is 20 ml, methyl iodide is 30 millimoles, and the mass percentage of selenic acid in the mixture system of selenic acid ...

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PUM

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Abstract

The invention discloses a method for transforming methane into other organic matters, which comprises the concrete step that the methane has oxidation reaction in acid media under the action of an oxidizing agent and catalysts, and is characterized in that the oxidizing agent is one of selenium trioxide, selenic acid, percarbamide, sodium percarbonate and peroxy-disulfuric acid; and the acid media are one, or a mixture of a few components of trifluoroacetic acid, trifluoromethanesulfonic acid, methanesulfonic acid, selenic acid and sulphuric acid. The method provides a novel oxidizing agent and the acid media, and has the advantages of easy control of reaction media and simple operation process.

Description

Technical field [0001] The present invention relates to a method for converting methane into other organic substances, in particular to a method for converting methane into alcohols or ethers. Background technique [0002] The main component of natural gas is methane, usually with a content of 83% to 99%. Therefore, the conversion and utilization of methane occupies a very important position in natural gas chemical industry and has become the main research content of natural gas chemical industry. Usually the conversion and utilization of methane include all the projects that use methane as a raw material to synthesize fuel and basic chemicals. As a chemical raw material, methane is currently used in large-scale industrialization mainly in the indirect conversion of methane. The process is to first convert methane into synthesis gas (CO+H 2 ), and then convert it into other organic substances (such as methanol, ammonia, dimethyl ether, low-carbon olefins, etc.). The production pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/48C07C31/04C07C41/01C07C43/04C07B33/00
Inventor 肖钢蔡旭明王波郑岩
Owner HANERGY TECH
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