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Preparation method of methane synthetic catalyst carrier

A catalyst carrier and methane synthesis technology, applied in the field of catalysis, can solve problems such as poor hydrothermal stability and unsuitability for use, and achieve the effects of good thermal stability, not easy to deposit carbon, and good hydrothermal stability

Active Publication Date: 2012-02-15
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carriers of these catalysts have poor hydrothermal stability and are not suitable for use in coal-based syngas methanation reactions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: (1) Dissolve 800g of magnesium nitrate in water to make a solution, neutralize the precipitate with sodium bicarbonate at 50°C-70°C, and wash the obtained precipitate with deionized water until it is qualified. (2) Dissolve 500g of pseudoboehmite powder in water to make a suspension, add 140ml of dilute nitric acid (1:1) under stirring to dissolve into aluminum sol. (3) Dissolve 35g of lanthanum nitrate in water to make a solution. (4) Slowly add aluminum sol and lanthanum nitrate solution to the precipitate in step 1, react at 55°C-65°C for 0.5h, and adjust the pH value with ammonia water. (5) Dry at 130°C for two hours. (6) Crushed in a pulverizer. (7) Baking at 200°C-300°C for two hours. (8) Add 4% cellulose to granulate. (9) Compress the tablet into Φ5×5 tablets by a tablet press. (10) The tablet is calcined at 800°C for two hours to obtain the required carrier I.

Embodiment 2

[0016] Example 2: (1) Dissolve 800g of magnesium nitrate in water to make a solution, neutralize the precipitate with sodium carbonate at 50°C-70°C, and wash the obtained precipitate with deionized water until qualified. (2) Dissolve 300g of alumina powder in water to make a suspension, add 120ml of dilute nitric acid (1:1) under stirring to dissolve into aluminum sol. (3) Dissolve 35g of lanthanum nitrate in water to make a solution. (4) Slowly add aluminum sol and lanthanum nitrate to the precipitate in step 1, react at 55°C-65°C for 1 hour, and adjust the pH value with ammonia water. (5) Dry at 130°C for two hours. (6) Crushed in a pulverizer. (7) Baking at 300°C-400°C for two hours. (8) Add 2% sage powder for granulation. (9) Compress the tablet into Φ5×5 tablets by a tablet press. (10) The tablet is calcined at 900°C for two hours to obtain the required carrier II.

Embodiment 3

[0017] Embodiment 3: Get carrier I and II and g-Al 2 o 3 The supports were respectively impregnated in nickel nitrate solution to prepare methane synthesis catalysts Ⅰ, Ⅱ and Ⅲ with Ni content of 15%.

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PUM

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Abstract

The invention belongs to the technical field of catalysis, and relates to a preparation method of a methane synthetic catalyst carrier, particularly a preparation method of a methane synthetic catalyst carrier existing in the form of magnesia alumina spinel. The method comprises the following steps: independently neutralizing a magnesium soluble salt solution with alkali, washing the obtained precipitate until the precipitate is qualified, mixing with alumina gel and a rare earth metal salt solution to react, drying, pulverizing, roasting, granulating, tabletting to form, and roasting to obtain the methane synthetic catalyst carrier. The carrier prepared by the method provided by the invention has high hydrothermal stability; and the methane synthetic catalyst prepared by using the carrier has the characteristics of high thermal stability, wide temperature range applicability and the like, and can not easily deposit carbon under the conditions of high CO content.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and relates to a method for preparing a methane synthesis catalyst carrier. Specifically relates to a preparation method of a magnesium aluminum spinel carrier, the carrier is used to prepare a catalyst by an impregnation method, and is particularly suitable as a carrier of a methane synthesis catalyst. Background technique [0002] The pattern of my country's basic energy is characterized by "rich coal, poor oil and little gas". For a long time, coal has occupied an absolute dominant position in my country's energy structure. With the rapid development of my country's national economy, the demand for energy will continue to increase, and my country's energy structure characteristics of "rich coal, poor oil and little gas" determine that coal resources will continue to be developed as the main source of energy for a long time in the future and exploit. Relying on my country's abundant coal res...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J23/10B01J23/83C07C9/04C07C1/02
CPCY02E50/30
Inventor 张杰魏士新蔡进蔡成伟檀结东陈长新吴学其吴琳孟建朱艳芳赵华
Owner CHINA PETROCHEMICAL CORP
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