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Gaseous hydrocarbon self-heating conversion catalyst and preparation method thereof

A self-thermal conversion and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., to avoid the aggregation of active metal grains, ensure stability, increase Effect of Active Metal Dispersion

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention does not relate to the field of autothermal conversion

Method used

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  • Gaseous hydrocarbon self-heating conversion catalyst and preparation method thereof
  • Gaseous hydrocarbon self-heating conversion catalyst and preparation method thereof
  • Gaseous hydrocarbon self-heating conversion catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Take calcined kaolin (35.21% alumina, 55.31% silica, impurity ≤ 2%, the same below), add 15% NaOH solution by mass fraction, soak at 70°C for 4 hours, filter and wash until Na-free + It exists, dried at 120°C, and crushed to 280 mesh.

[0044]Weigh 58.4g of nickel nitrate and 12.8g of magnesium nitrate, dissolve them in 85g of water, add the aqueous solution to 82.5g of the above-mentioned alkali-modified kaolin, mix and make a slurry, put the slurry in an oven and dry at 120°C for 12 hours to obtain a semi-finished product A1.

Embodiment 2

[0046] Take calcined kaolin and add 15% NaOH solution with a mass fraction of 15% to keep soaking at 70°C for 4 hours, filter and wash until there is no Na + It exists, dried at 120°C, and crushed to 280 mesh.

[0047] Weigh 66.2g of nickel nitrate and 38.4g of magnesium nitrate, dissolve them in 90g of water, add the aqueous solution to 88g of the above-mentioned alkali-modified kaolin, mix and make a slurry, put the slurry in an oven and dry at 120°C for 12 hours to obtain a semi-finished product A2.

Embodiment 3

[0049] Take calcined kaolin, add mass fraction 17% NaOH solution, keep soaking at 75°C for 4 hours, filter and wash until there is no Na + It exists, dried at 120°C, and crushed to 280 mesh.

[0050] Weigh 77.8g of nickel nitrate and 19.2g of magnesium nitrate, dissolve them in 100g of water, add the aqueous solution to 95g of the above-mentioned alkali-modified kaolin, mix and make a slurry, put the slurry in an oven and dry at 120°C for 12 hours to obtain a semi-finished product A3.

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Abstract

The invention belongs to the technical field of gaseous hydrocarbon conversion catalysts, and relates to a catalyst for the field of synthesis gas produced by gaseous hydrocarbon self-heating conversion or hydrogen production and a preparation method of the catalyst. According to the catalyst disclosed by the invention, nickel is used as an active component; SiO2 at free state and 3Al2O3*2SiO2 of a mullite structure are used as carriers; MgO and / or a rare earth metal oxide are used as auxiliaries. The preparation method comprises the following steps: adopting a pulping method or a dry mixing method to prepare a semi-finished product, and then molding and baking the semi-finished product to obtain the finished product catalyst. The catalyst is high in anti-carbon deposition performance, good in strength and strength stability, and good in reactive metal dispersion effect, effectively avoids the reactive metal crystal grain aggregation in the using process, ensures the activity stability of the catalyst, and facilitates large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of gaseous hydrocarbon conversion catalysts, and relates to a catalyst used in the field of autothermal conversion of gaseous hydrocarbons to produce synthesis gas or hydrogen production and a preparation method thereof. Background technique [0002] As the world's petroleum resources are decreasing day by day, the development and utilization of various gaseous hydrocarbons, including refinery gas, natural gas, and oilfield gas, have attracted more and more attention. Gaseous hydrocarbons include hydrogen, methane, ethane, propane, and butane, etc., depending on the type. At present, the industrial application of gaseous hydrocarbons to produce hydrogen or synthesis gas generally adopts the direct conversion method of steam reforming. This method is a strong endothermic process, which requires a pressure of 1.5MPa to 3.0MPa and a temperature of 850°C to 900°C. In order to prevent carbon deposition on the ca...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J23/83
Inventor 姜建波王昊薛红霞白志敏赵庆鲁齐焕东江秀玲梁卫忠余汉涛
Owner CHINA PETROLEUM & CHEM CORP
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