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Aluminium oxide carrier containing magnesium and phosphor and preparing method

An alumina carrier and carrier technology, applied in the field of K alumina carrier and its preparation, can solve the problems of preparation method, addition amount and function not involved, complicated process, long process, etc., and achieve large pore volume, large pore size, The effect of strong anti-coking ability

Inactive Publication Date: 2007-11-14
林方 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the preparation process starts from sodium metaaluminate, the process is long, complicated and costly
[0005] Chinese patent CN1110304A relates to an alumina carrier containing P and Si and its preparation method, which is similar to Chinese patent CN1242847C. Its preparation method also starts from aluminum salts such as aluminum chloride, and the process is long, complicated and costly
[0006] Chinese patent CN1091427C relates to a preparation method of alumina. It simply states in the specification that dozens of elements such as P and Mg can be added, but it does not involve its preparation method, addition amount and function.
In addition, there is no report on adding P, Mg and K to the carrier

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 100 g of aluminum hydroxide dry rubber powder, and add 5 g of celadon powder. Dissolve 30g of magnesium nitrate and 15g of phosphoric acid in 80ml of water to make a solution. Add the solution into the aluminum hydroxide dry rubber powder containing the squash powder, knead it into a uniform paste-like plastic, and extrude it into a clover-shaped strip with a diameter of 1.2 mm. Dry it in a drying oven at 110°C for 4 hours, then move it into a muffle furnace and bake it at 550°C for 4 hours to make an alumina carrier A containing magnesium and phosphorus.

Embodiment 2

[0026] Weigh 100 g of aluminum hydroxide dry rubber powder, and add 5 g of celadon powder. Dissolve 7.42g of magnesium nitrate and 5.5g of phosphoric acid in 80ml of water to make a solution. Add the solution into the aluminum hydroxide dry rubber powder containing the squash powder, knead it into a uniform paste-like plastic, and extrude it into a clover-shaped strip with a diameter of 1.2 mm. Dry it in a drying oven at 110°C for 4 hours, then move it into a muffle furnace and bake it at 550°C for 4 hours to make an alumina carrier B containing magnesium and phosphorus.

Embodiment 3

[0028] Weigh 100g of aluminum hydroxide dry rubber powder, add 5g of scallop powder, dissolve 14.8g of magnesium nitrate, 1.8g of potassium nitrate, and 8.3g of phosphoric acid in 80ml of water to make a solution. Mix the above materials evenly, knead them into plastic materials, extrude into clover-shaped strips with a diameter of 1.2mm, dry at 120°C for 2 hours, and roast at 650°C for 4 hours to make alumina carrier C containing magnesium, phosphorus, and potassium.

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Abstract

The present invention discloses an aluminium oxide carrier which contains magnesium and phosphorus, also can contain potassium and its preparation method. The magnesium, phosphorus and potassium can be added in the process of preparation. Said carrier is low in acidity and has large pore volume and large specific surface area. The catalyst prepared by using said carrier has the features of strong anti-coking property and good stability.

Description

technical field [0001] The present invention relates to an alumina carrier and its preparation method; in particular, the present invention relates to an alumina carrier containing P, Mg and possibly K and its preparation method. Background technique [0002] Hydrocarbons such as coal tar light distillates have high residual carbon content (easy to coke during hydrogenation upgrading), high aromatics content, high nitrogen content, and high oxygen content (large water production and high water pressure in hydrogenation products, which are likely to cause catalyst activity loss of components), high sulfur content, large molecules, etc., require the hydrogenation catalyst used in the hydrogenation upgrading process of hydrocarbons such as coal tar light distillate to have strong anti-coking ability, high activity, good stability, large Large pore volume, large specific surface area, and large pore diameter. Since the performance of the support directly and strongly affects th...

Claims

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Application Information

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IPC IPC(8): B01J27/18B01J21/04B01J21/10B01J23/02
Inventor 林方黄玉豹袁士杰朱广英
Owner 林方
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