Supported hydrogenation catalyst and preparation method thereof

A hydrogenation catalyst, supported technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of uneven deposition of active components, affecting catalyst activity, etc., to avoid metal utilization The efficiency is not high, the order is improved, and the effect of hydrogenation activity is exerted

Active Publication Date: 2020-06-09
PETROCHINA CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0014] The main purpose of the present invention is to provide a supported hydrogenation catalyst and its preparation method to overco

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  • Supported hydrogenation catalyst and preparation method thereof

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preparation example Construction

[0035] The invention discloses a preparation method of a supported hydrogenation catalyst, which preparation method comprises the following steps (such as figure 1 ):

[0036] Step 1, preparation of γ-Al 2 o 3 carrier;

[0037] Step 2, the γ-Al 2 o 3 The carrier is impregnated with the solution of the active metal positioning and loading directing agent, and dried; and

[0038] Step 3, the γ-Al obtained in step 2 2 o 3 The carrier is impregnated with an impregnation solution containing active components, and dried and calcined to obtain a supported hydrogenation catalyst;

[0039] Wherein, the active metal positioning load-directing agent is one or more of the group consisting of sodium ethylenediamine tetramethylene phosphate, tetrabutylammonium fluoride and tartaric acid.

[0040]Among them, the present invention is useful for the preparation of γ-Al 2 o 3 The specific method of the carrier is not particularly limited, the preparation of γ-Al known in the art 2 o ...

Embodiment 1

[0050] (1) γ-Al 2 o 3 Preparation of vector

[0051] Weigh 1000g of pseudoboehmite powder, 30g of Tianqing powder, 30g of citric acid, and 700ml of 3-5% dilute nitric acid, mix them evenly, extrude them with an extruder, dry at 110°C for 10h, and roast at 650°C in an air atmosphere After treatment, γ-Al was obtained 2 o 3 carrier.

[0052] (2) Impregnated active metal positioning load-directing agent

[0053] Adopt the method of unsaturated spray impregnation, weigh the γ-Al prepared by 500g step (1) 2 o 3 Carrier, measure 135g of the prepared active metal positioning load-directing agent solution and spray immerse. The mass ratios of three solutes in the solution are: the mass ratio of sodium ethylenediaminetetramethylene phosphate is 65.4%, tetrabutylammonium fluoride The mass proportion of tartaric acid is 15.0%, and the mass proportion of tartaric acid is 19.6%. The mass concentration of the solution of the active metal positioning load-directing agent is 4.7%. It...

Embodiment 2

[0057] (1) γ-Al 2 o 3 Preparation of vector

[0058] Weigh 1000g of pseudoboehmite powder, 30g of Tianqing powder, 30g of citric acid, and 700ml of 3-5% dilute nitric acid, mix them evenly, extrude them with an extruder, dry at 110°C for 10h, and roast at 650°C in an air atmosphere After treatment, γ-Al was obtained 2 o 3 carrier.

[0059] (2) Impregnated active metal positioning load-directing agent

[0060] Adopt the method of unsaturated spray impregnation, weigh the γ-Al prepared by 500g step (1) 2 o 3 Carrier, measure 132g of the prepared active metal positioning load-directing agent solution and spray immerse. The mass ratios of three solutes in the solution are: the mass ratio of sodium ethylenediamine tetramethylene phosphate is 56.4%, tetrabutylammonium fluoride The mass proportion of tartaric acid is 27.3%, and the mass proportion of tartaric acid is 16.3%. The mass concentration of the solution of the active metal positioning load-directing agent is 3.0%. I...

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Abstract

The invention discloses a preparation method of a supported hydrogenation catalyst. The preparation method comprises the following steps: 1, preparing a gamma-Al2O3 carrier; 2, dipping the gamma-Al2O3carrier in a solution of an active metal positioning and loading guiding agent, and drying the gamma-Al2O3 carrier; and 3, impregnating the gamma-Al2O3 carrier obtained in the step 2 with an impregnation liquid containing an active component, and carrying out drying and roasting to obtain the supported hydrogenation catalyst, wherein the active metal positioning and load guiding agent is one or more of a group consisting of ethylenediamine tetramethylene sodium phosphate, tetrabutylammonium fluoride and tartaric acid. The catalyst prepared by the invention can be used for hydrofining distillate oil such as gasoline distillate, kerosene distillate, diesel distillate and the like, and has high hydrodesulfurization and denitrification activity and aromatic hydrocarbon saturation activity.

Description

technical field [0001] The invention relates to a supported hydrogenation catalyst and a preparation method thereof. Background technique [0002] For a traditional supported non-noble metal hydrogenation catalyst, the active metal accounts for about 15-35% of the total weight of the catalyst, and the active metal component is usually a combination of two or more. The synergy between active metal components has an important impact on the improvement of catalyst performance. The degree of dispersion of the active metal on the surface of the carrier plays a decisive role in the synergy between the active metal components. [0003] In traditional non-supported hydrogenation catalysts, during the impregnation process of active metals, there is often random deposition of active components, resulting in uneven distribution of metal atoms of different sizes along the radial direction of the support. The amount of deposition inside the carrier is larger and the amount of depositio...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J37/02C10G45/08
CPCB01J23/888B01J23/002B01J37/0207C10G45/08B01J2523/00C10G2300/202B01J2523/31B01J2523/69B01J2523/847Y02P20/52
Inventor 徐伟池徐铁钢马宝利倪术荣张文成郭金涛陆雪峰王新苗方磊温广明王刚孙发民李瑞峰宋金鹤于春梅张全国王丹张铁珍郭立艳冯秀芳韩志波丛丽茹孙生波
Owner PETROCHINA CO LTD
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