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The preparation method of binary rus2 heterogeneous catalyst

A technology of heterogeneous catalysts and preparation steps, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of harsh reaction conditions, high energy consumption, unsuitable for industrial production, etc., and achieve mild reaction conditions , high purity, simple and feasible method

Active Publication Date: 2015-12-09
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Description
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Problems solved by technology

[0004] In the above preparation method due to H 2 S is a potent neurotoxin, and H 2 S gas is a serious pollutant, and it is generally not used as a chemical raw material in industry. In addition, due to harsh reaction conditions and high energy consumption, this method is not suitable for industrial production.

Method used

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  • The preparation method of binary rus2 heterogeneous catalyst
  • The preparation method of binary rus2 heterogeneous catalyst

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Embodiment 1

[0017] Example 1: Binary RuS 2 / ZSM-5 catalyst preparation and its hydrodesulfurization activity. Accurately weigh 15mg of RuCl 3 ·3H 2 O and 485mg of ZSM-5 were placed in a 25mL single-necked round bottom flask (Ru (wt%) was 1.16%), 10mL of ethanol was added, stirred at room temperature for 24h and then vacuum-dried. In a stirred autoclave, add the above-mentioned catalyst that has been dried, then add 17mL cyclohexane and 3mL carbon disulfide (wherein cyclohexane is the solvent, and carbon disulfide is the sulfur source in the pre-sulfurization), close the reactor, and use nitrogen Replace the air in the reactor for at least three times, then replace the nitrogen in the reactor with hydrogen for at least three times, then adjust the hydrogen pressure in the reactor to 2MPa, perform rapid stirring, heat to 200°C (programmed temperature rise 3°C / min) and maintain for 4h . After the reaction, the autoclave was cooled to room temperature, washed several times with ethanol, a...

Embodiment 2

[0020] Example 2: Binary RuS 2 / SBA-15 catalyst preparation and its hydrodesulfurization activity. Accurately weigh 15mg of RuCl 3 ·3H 2 O and 485mg of SBA-15 were placed in a 25mL single-necked round bottom flask, 10mL of ethanol was added, then stirred at room temperature for 24h, and dried in a vacuum oven. Other conditions and method are with embodiment 1. The conversion rate of the prepared catalyst to thiophene is shown in Table 1.

Embodiment 3

[0021] Example 3: Binary RuS 2 / γ-Al 2 o 3 Catalyst preparation and its hydrodesulfurization activity. Accurately weigh 15mg of RuCl 3 ·3H 2 O and 485mg of γ-Al 2 o 3 Place in a 25mL single-necked round bottom flask, add 10mL of ethanol, then stir at room temperature for 24h, and dry in a vacuum oven. Other conditions and method are with embodiment 1. The conversion rate of the prepared catalyst to thiophene is shown in Table 1.

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Abstract

The invention discloses a preparation method of a binary RuS2 heterogeneous catalyst, and belongs to the technical field of preparation of a ruthenium catalyst. The catalyst consists of a carrier and an active ingredient, wherein the carrier is any one of ZSM-5, SBA-15, gamma-Al2O3 and SiO2, and the active ingredient is Ru; the preparation method comprises the steps of dissolving RuCl3.3H2O in ethanol, adding the carrier to the ethanol, stirring, uniformly mixing and drying, implementing temperature programming in a high-pressure reaction kettle to 200-220 DEG C, prevulcanizing and drying a prevulcanized black solid in a vacuum drying oven to obtain the binary RuS2 catalyst. The method is simple and feasible, and moderate in reaction condition; and the prepared binary RuS2 catalyst is relatively high in particle granularity and shows a relatively high catalytic activity in a thiofuran desulfurization process, so that binary RuS2 catalyst can realize industrial production.

Description

Technical field: [0001] The invention belongs to the technical field of ruthenium catalyst preparation, in particular to an oxide-loaded binary RuS 2 Process for the preparation of heterogeneous catalysts. Background technique: [0002] During the combustion of fossil fuels, a large number of sulfur-containing compounds that are easy to cause environmental pollution will be produced. Therefore, further reducing the sulfur content (below 10ppm) has become the main research direction of desulfurization and desulfurization work. At present, the industry mainly uses Al 2 o 3 Metals such as nickel (Ni), cobalt (Co) and molybdenum (Mo) supported by other oxides form heterogeneous catalysts for hydrodesulfurization (HDS) to remove sulfides in fossil fuels. Among them, nickel (cobalt) / molybdenum catalyst has been considered as one of the most important catalysts in industry, and RuS 2 It is the catalyst with the highest hydrodesulfurization catalytic activity among transition me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/44B01J29/03B01J27/045
Inventor 赵强张千峰贾爱铨辛志峰
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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