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Method for preparing carbon-containing catalyst

A technology of catalyst and catalyst carrier, which is applied in catalyst activation/preparation, catalyst carrier, chemical instrument and method, etc., can solve the problems of high cost, complicated preparation process, and difficulty in large-scale industrialization.

Active Publication Date: 2012-07-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing carbon coating method has a complicated preparation process and high cost, making it difficult to be industrialized on a large scale.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] 2. Add in the preparation process of alumina dry rubber powder, such as introducing by co-precipitation or step-by-step precipitation. Then, the carbon-free alumina carrier is obtained by extruding the alumina dry rubber powder, drying and calcining.

[0031] 3. Add the acid solution to the alumina dry rubber powder, knead until it becomes a plastic body, extrude it on an extruder, then dry and roast it to make a carrier. Then impregnate the alumina support strip with a solution containing VIB and / or VIII metal components, dry and calcinate to make a carbon-free alumina support.

[0032] One or more of extrusion aids, adhesives, peptizers, and other additives required for the catalyst can be added to the above-mentioned alumina dry rubber powder, and the amount added can be determined according to the properties of the prepared catalyst according to the knowledge in the art. The alumina dry rubber powder used is the pseudo-boehmite produced by the aluminum chloride-amm...

Embodiment 1

[0040] This example introduces the preparation of carbon-free alumina carrier by using pseudo-boehmite dry rubber powder. The dry rubber powder has a specific surface area of ​​370m2 / g and a pore volume of 0.90ml / g.

[0041] Weigh 300g of dry rubber powder, add 100g of SB powder, add 6g of citric acid and 6g of safflower powder, mix well, add 345g of acidic solution, HNO in the acidic solution 3 The concentration is 1.74%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a clover orifice plate with a diameter of 1.7mm. After drying at 120°C for 4h and then calcining at 500°C for 3h, the obtained alumina carrier bar is marked as A.

Embodiment 2

[0043] This example introduces the preparation of carbon-free support by using pseudo-boehmite dry rubber powder and nickel nitrate. Dry rubber powder specific surface area is 370m 2 / g, the pore volume is 0.90ml / g.

[0044] Weigh 300g of dry rubber powder, add 100g of SB powder, add 6g of citric acid and 6g of safflower powder, mix well, add 345g of acidic solution, HNO in the acidic solution 3 The concentration is 1.74%, the nickel nitrate content is 3.9%, and the rest is distilled water. After rolling for 20 minutes, extrude the strips with a clover orifice plate with a diameter of 1.7mm. Dry at 120°C for 4h, then bake at 500°C for 3h, and the obtained carrier bar is marked as B.

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Abstract

The invention discloses a method for preparing a carbon-containing catalyst, which comprises the following steps of: (1) preparing a porous inorganic refractory oxide carrier; (2) soaking a carbon precursor in the inorganic refractory oxide carrier; (3) introducing a metal aid into the step (1) or the step (2); (4) performing thermal treatment, namely thermally treating the porous inorganic refractory oxide carrier carrying the carbon precursor and the metal aid, and decomposing the carbon precursor into carbon so as to obtain a carbon-containing catalyst carrier; and (5) loading an active metal component to obtain the catalyst. The carbon-containing carrier is prepared by pre-soaking the carbon precursor, and then the active metal is loaded to prepare the carbon-containing catalyst so asto simplify the preparation process of the carbon-containing catalyst carrier and improve the physical and chemical properties and the use property of the carbon-containing catalyst.

Description

technical field [0001] The invention relates to a preparation method of a carbon-containing catalyst, in particular to a preparation method of a carbon-containing hydrogenation catalyst. Background technique [0002] Most traditional hydrotreating catalysts use Al 2 o 3 As a carrier, but active Al 2 o 3 (such as γ-Al 2 o 3 ) has more Lewis acid centers, which can easily lead to coking of the catalyst, and γ-Al 2 o 3 There is a strong interaction between the carrier and the metal component, which makes it difficult for the metal component to transform into a highly active active phase. [0003] It is believed that the type II active phase is fully vulcanized and is stacked (stacked) MoS 2 Structure, Co-Mo-S active phase with high sulfur coordination, usually stacked (stacked) together by larger sheets, not connected to the carrier, each active center of type II active phase has high potential activity, hydrogenation of thiophene The activity of desulfurization (HDS) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J37/00B01J21/18B01J32/00B01J37/02B01J37/08B01J23/888C10G45/08
Inventor 杨占林彭绍忠姜虹刘雪玲
Owner CHINA PETROLEUM & CHEM CORP
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