Methane oxidative coupling reaction catalyst and preparation method thereof

An oxidative coupling reaction and catalyst technology, applied in catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of large particle size of active components and carbodicarbon selection It can solve the problems of low performance and low methane conversion rate, and achieve the effects of uniform distribution, improved conversion rate and simple and easy preparation method.

Inactive Publication Date: 2015-12-23
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of the existing methane oxidative coupling catalysts, such as large particle size and uneven distribution of active components, low conversion rate of methane and low selectivity of carbon dihydrocarbons in the methane oxidative coupling reaction, and provide a A preparation method of a methane oxidative coupling reaction catalyst and a methane oxidative coupling reaction catalyst prepared by the method

Method used

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  • Methane oxidative coupling reaction catalyst and preparation method thereof
  • Methane oxidative coupling reaction catalyst and preparation method thereof
  • Methane oxidative coupling reaction catalyst and preparation method thereof

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[0015] The preparation method of the methane oxidative coupling reaction catalyst provided by the present invention comprises: under ultrasonic conditions, carrying out the first impregnation of the carrier in the metal compound aqueous solution, drying, and then performing the second impregnation in the metal compound aqueous solution under the ultrasonic conditions , dried and calcined, wherein, the mass ratio of the metal compound in the metal compound aqueous solution to the carrier is 1:0.001-200; the mass ratio of the carrier to the water in the metal compound aqueous solution is 1:1- 20.

[0016] Preferably, the mass ratio of the metal compound in the metal compound aqueous solution to the carrier is 1:0.003-100; the mass ratio of the carrier to water in the metal compound aqueous solution is 1:1-15.

[0017] Further preferably, the mass ratio of the metal compound in the metal compound aqueous solution to the carrier is 1:0.005-50; the mass ratio of the carrier to wate...

Embodiment 1

[0030]Weigh 0.28g of sodium tungstate and add it into a beaker of 25g of distilled water. After the dissolution is complete, add 5g of silicon dioxide into the beaker, put the beaker into an ultrasonic cleaner, set the ultrasonic frequency to 45KHz, and the ultrasonic temperature to 30°C , sonicated for 4 hours, placed in a constant temperature drying oven at 120°C, and dried for 24 hours to obtain silica loaded with sodium tungstate; weigh 0.65g of manganese nitrate (50% aqueous solution), add it to a beaker of 25g of distilled water, and dissolve it completely , add the above-mentioned silicon dioxide loaded with sodium tungstate to the beaker, put the beaker into an ultrasonic cleaner, set the ultrasonic frequency to 45KHz, ultrasonic temperature to 30°C, ultrasonically treat for 4h, and put it in a constant temperature drying oven at 100°C Dry for 24 hours, move to a muffle furnace for calcination, raise the temperature to 550°C for 5 hours and then continue to raise the te...

Embodiment 2

[0032] Take by weighing 3.02g manganese nitrate (50% aqueous solution), join in the beaker of 10g distilled water, after dissolving completely, add 5g barium titanate in the beaker, put the beaker in the ultrasonic cleaner, set the ultrasonic frequency to 80KHz, ultrasonic The temperature is 30°C, sonicated for 2.5h, put into a constant temperature drying oven at 120°C and dried for 12h to obtain barium titanate loaded with manganese nitrate; weigh 1.02g of sodium carbonate, add it to a beaker of 10g of distilled water, and pour it into Add the above-mentioned barium titanate loaded with manganese nitrate into the beaker, put the beaker into an ultrasonic cleaner, set the ultrasonic frequency to 80KHz, and the ultrasonic temperature to 30°C, ultrasonically treat for 2.5h, and dry in a constant temperature drying oven at 120°C for 12h Obtain the barium titanate that is loaded with sodium carbonate and manganese nitrate; Weigh 3.05g ammonium tungstate, join in the beaker of 10g d...

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Abstract

The invention discloses a methane oxidative coupling catalyst and a preparation method thereof. The method comprises: under an ultrasonic condition, subjecting a carrier to first dipping in a metal compound aqueous solution, and conducting drying, then carrying out second dipping in a metal compound aqueous solution under the ultrasonic condition, and performing drying and roasting. The preparation method of the methane oxidative coupling reaction catalyst is simple and easy to operate, and the methane oxidation coupling reaction catalyst prepared by the method has uniformly distributed active components with small particle size. By applying the methane oxidative coupling catalyst prepared by the method to methane oxidative coupling reaction, the conversion rate of methane and the selectivity of C2 hydrocarbons can be increased simultaneously.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a method for preparing a methane oxidative coupling reaction catalyst and a methane oxidative coupling reaction catalyst prepared by the method. Background technique [0002] Ethylene is the most important basic organic chemical raw material. For a long time, its production has been dependent on the petroleum cracking route, and the resulting environmental pollution and other problems have become increasingly serious. In recent years, crude oil prices have continued to rise, which has triggered an increase in the price of ethylene cracking raw materials. At the same time, the supply of ethylene cracking raw materials is also very prominent. Facing this situation, countries around the world are adjusting their energy utilization structures and constantly looking for new ethylene production routes. . Natural gas is an important energy source, and its abundant reserves provide a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/34B01J37/02C07C2/84C07C11/04
CPCY02P20/52
Inventor 武洁花张明森柯丽赵清锐薛伟冯静邵芸
Owner CHINA PETROLEUM & CHEM CORP
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