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Hydrodesulfurization catalyst and preparation method thereof

A technology of hydrodesulfurization and catalyst, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., and can solve the problems such as the influence of the shape of the alumina support on the catalytic activity of hydrodesulfurization that is not clearly related. To achieve the effect of easy realization, promoting improvement and promoting activity

Pending Publication Date: 2022-06-03
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] CN109420504A discloses a catalytic cracking gasoline hydrodesulfurization catalyst and its preparation method, but in this scheme, it is not clearly related to the shape of the alumina support and the impact of the supported species on the catalytic activity of hydrodesulfurization

Method used

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  • Hydrodesulfurization catalyst and preparation method thereof
  • Hydrodesulfurization catalyst and preparation method thereof
  • Hydrodesulfurization catalyst and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Weigh 1 g of γ-Al prepared under the above conditions 2 O 3 , using the equal volume impregnation method, the impregnation liquid includes a certain amount of (NH 4 ) 6 Mo 7 O 24 ·7H 2 O and Co(NO 3 ) 2 ·6H 2 O, eventually in γ-Al 2 O 3 The surface is loaded with 10% Mo and 3% Co. The whole sample was dried at 80°C for 12h, and then heat-treated at 450°C for 2h with a heating rate of 2°C / min. The catalyst initial product was placed in H 2 S / H 2 Sulfurization is performed in an atmosphere to obtain the hydrodesulfurization catalyst. Sulfurizing atmosphere is 10% H 2 S / H 2 , the heating conditions were raised from room temperature to 400 °C, the holding time was 2 h, and the heating rate was 5 °C / min. Catalyst performance evaluation was carried out on a high pressure fixed bed microreactor. The reaction temperature range is 260℃~340℃, the reaction pressure is 2MPa, and the reaction space velocity is 10.6h -1 , the reaction stock solution was a model comp...

Embodiment 2

[0037] Weigh 1 g of γ-Al prepared under the above conditions 2 O 3 , using the equal volume impregnation method, the impregnation liquid includes a certain amount of (NH 4 ) 6 Mo 7 O 24 ·7H 2 O and Co(NO 3 ) 2 ·6H 2 O, eventually in γ-Al 2 O 3 The surface is loaded with 15% Mo and 3% Co. The whole sample was dried at 90°C for 12h, and then heat-treated at 420°C for 2h with a heating rate of 2°C / min. The catalyst initial product was placed in H 2 S / H 2 Sulfurization is performed in an atmosphere to obtain the hydrodesulfurization catalyst. Sulfurizing atmosphere is 10% H 2 S / H 2 , the heating conditions were raised from room temperature to 390 °C, the holding time was 2 h, and the heating rate was 5 °C / min. Catalyst performance evaluation was carried out on a high pressure fixed bed microreactor. The reaction temperature range is 260℃~340℃, the reaction pressure is 2MPa, and the reaction space velocity is 10.6 h -1 , the reaction stock solution was a model com...

Embodiment 3

[0039] Weigh 1 g of γ-Al prepared under the above conditions 2 O 3 , using the equal volume impregnation method, the impregnation liquid includes a certain amount of (NH 4 ) 6 Mo 7 O 24 ·7H 2 O and Co(NO 3 ) 2 ·6H 2 O, eventually in γ-Al 2 O 3 The surface is loaded with 5% Mo and 3% Co. The whole sample was dried at 85°C for 12h, and then heat-treated at 450°C for 2h with a heating rate of 2°C / min. The catalyst initial product was placed in H 2 S / H 2 Sulfurization is performed in an atmosphere to obtain the hydrodesulfurization catalyst. Sulfurizing atmosphere is 10% H 2 S / H 2 , the heating conditions were raised from room temperature to 400 °C, the holding time was 2 h, and the heating rate was 5 °C / min. Catalyst performance evaluation was carried out on a high pressure fixed bed microreactor. The reaction temperature range is 260℃~340℃, the reaction pressure is 2MPa, and the reaction space velocity is 10.6 h -1 , the reaction stock solution was a model comp...

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Abstract

The invention discloses a hydrodesulfurization catalyst and a preparation method thereof. The hydrodesulfurization catalyst provided by the invention comprises a hexagonal flaky alumina carrier and active metal sulfides, and the active metal sulfides comprise MoS2, Co9S8 and CoMoS. The preparation method comprises the following steps: (1) uniformly mixing an aluminum source aqueous solution with an ionic liquid, dropwise adding an ammonium carbonate solution, carrying out hydrothermal treatment after dropwise adding, and washing, drying and roasting after hydrothermal treatment to obtain a hexagonal flaky alumina carrier; (2) impregnating the surface of the Al2O3 carrier with a metal solution containing Mo and Co, drying, and carrying out heat treatment to obtain an oxidation-state catalyst; and (3) carrying out sulfuration treatment on the oxidation-state catalyst to obtain the hydrodesulfurization catalyst. By controlling the crystal face structure of the catalyst carrier and the synergistic effect between sulfide species, the hydrodesulfurization activity of the catalyst is improved, and the conversion rate of the hydrodesulfurization reaction and the product selectivity can be remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a hydrodesulfurization catalyst and a preparation method thereof. Background technique [0002] Petroleum and its products, as the main source of energy and raw materials for daily chemicals, are an important support for the development of the entire country. At the same time, with the rapid development of the automobile industry and the substantial increase in the number of automobiles in China, the harmful pollutants and air pollution caused by automobile exhaust emissions have received extensive attention from the country and society. Therefore, petroleum, which is the main raw material for automobiles and chemical industries, especially the harmful components in petroleum, needs to be further reduced. At the same time, in recent years, the state has increased the governance of the ecological environment. Based on this, my country has also accelerated...

Claims

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Application Information

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IPC IPC(8): B01J27/051B01J37/10B01J37/02B01J37/08B01J37/20C10G45/08
CPCB01J27/0515B01J37/10B01J37/0201B01J37/088B01J37/20C10G45/08C10G2300/202Y02P20/52
Inventor 高玉兰季伟捷方向晨王鹏程徐黎明冯新振佟佳庞义军杨涛王继锋
Owner CHINA PETROLEUM & CHEM CORP
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