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A kind of supported green rust-based multi-metal hydroxide catalyst and preparation method thereof

A hydroxide and multi-metal technology, which is applied in the field of highly active loaded green rust-based multi-metal hydroxide catalyst and its preparation, can solve the problems that the overall activity of the catalyst cannot be significantly improved, and the amount of doping is limited, etc., to achieve The effects of strong adjustable denaturation, simple preparation process and wide application value

Active Publication Date: 2021-08-17
李大鹏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The catalyst described in the above invention patent breaks through the previous catalyst structure with only FeOOH as the active component, making it perform better than the catalyst with pure FeOOH as the active component in their respective application reactions, but due to the limited amount of other elements incorporated , the main structure of the active component of the catalyst is still FeOOH, so the overall activity of the catalyst cannot be significantly improved

Method used

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  • A kind of supported green rust-based multi-metal hydroxide catalyst and preparation method thereof
  • A kind of supported green rust-based multi-metal hydroxide catalyst and preparation method thereof
  • A kind of supported green rust-based multi-metal hydroxide catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0020] In terms of catalyst, according to the loading capacity of Fe-Co-Mo is 29.6%, 3.96g analytically pure FeCl 2 4H 2 O, 4.76g CoCl 2 ·6H 2 O, 2.73g MoCl 5 Dissolve in 100mL of deionized water, add 10g of bituminous coal powder with a particle size distribution of 20-120μm to the resulting solution, then pass in oxygen and stir, and at the same time add 5% aqueous urea solution dropwise to control the pH of the solution to 8.8 , reacted at 60°C for 18 hours, then suction filtered the material and dried at 120°C for 5h to obtain a Fe(II)Fe(III) green rust-based catalyst containing Co(II)Mo(IV) loaded on coal powder, Its X-ray diffraction pattern is as figure 1 As shown in the spectrum, the characteristic diffraction peaks of crystal planes of layered polymetallic hydroxides (003), (006), (012), (110) and (113) can be clearly seen, and the coal powder carrier near 20° The characteristic diffraction peaks of large and broad peaks. The SEM photo of the Fe(II)Fe(III) green...

Embodiment 2

[0022]In terms of catalyst, according to the loading capacity of Fe-Ni is 5.0%, 130 kilograms of FeSO 4 ·7H 2 O. 120kg NiSO 4 ·6H 2 O was dissolved in 5 tons of deionized water, and 1 ton of activated alumina powder was added to the resulting solution to make a suspension, then compressed air was introduced and stirred, and at the same time, ammonia water with a volume concentration of 3.7% was added through a distributor to control the pH of the solution. 7.5, stirred and reacted at 35°C for 6 hours, then plate and frame filter the material and dried at 230°C for 24h to obtain a Fe(II)Fe(III) green rust-based catalyst containing Ni(II) supported by activated alumina , and its SEM photo is as image 3 As shown in the figure, it is obvious that the Fe(II)Fe(III) green rust-layered multi-metal hydroxide with hexagonal sheet structure is evenly loaded on the surface of the active alumina carrier.

Embodiment 3

[0024] In terms of catalyst, according to the loading capacity of Fe-Ni-Zn is 4.0%, 130 kilograms of FeSO 4 ·7H 2 O. 60kg NiSO 4 ·6H 2 O, 15 kg ZnSO 4 ·7H 2 O was dissolved in 5 tons of tap water, and 1 ton of activated carbon powder was added to the resulting solution to make a suspension, which was then introduced into the factory instrument wind and stirred, while adding dropwise a 2% sodium hydroxide aqueous solution to control the pH of the solution. 8.0, reacted at 50°C for 4 hours, then plate and frame filter the material and dry it at 200°C for 24h to obtain Fe(II)Fe(III) green rust base containing Ni(II)Zn(II) loaded on activated carbon catalyst. Its X-ray diffraction pattern is as Figure 4 As shown in the spectrogram, the characteristic diffraction peaks of layered polymetallic hydroxides (003), (006), (012), (015) and other crystal planes can be clearly seen, and the large and broad peaks of the activated carbon carrier near 20° and Characteristic diffractio...

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Abstract

The invention discloses a supported green rust-based polymetallic hydroxide catalyst and a preparation method thereof. The active component of the catalyst is a layered polymetallic hydroxide, Fe 3+ with M 2+ , M e+ The main structure of the laminate is formed, and the guest structure is composed of anions between the layers; the carrier of the catalyst is any one or more of carbon materials, molecular sieves, and inorganic oxides. In the present invention, Fe(II) salt is used as raw material, through process oxidation, and other stable divalent and multivalent metals are used as protective agent, and under relatively mild conditions, one-step self-assembly in the synthesis reaction becomes a loaded patina-based multi- Metal hydroxide catalyst, this type of catalyst has a simple preparation process, extremely stable structure, strong adjustable denaturation, and the multifunctionality of both the carrier and the active component of the catalyst. The metal composition of the layer and the guest anion between the layers are adjustable, breaking through The existing barriers of green rust materials have also broken through the structural barriers limited to FeOOH catalysts, and have extremely broad application value.

Description

technical field [0001] The invention belongs to the technical fields of petroleum processing and coal chemical industry, and specifically relates to a high-activity loaded green rust-based polymetallic compound applied to kerosene co-refining reaction, direct coal liquefaction reaction, heavy and inferior oil lightening reaction and coal tar hydrogenation reaction Hydroxide catalyst and its preparation method. Background technique [0002] In recent years, FeOOH, as an active component of catalyst, has been widely used in direct coal liquefaction reaction and heavy and inferior oil lightening reaction, mainly because FeOOH has a cheap cost advantage and can show ideal reactivity in this type of reaction. Therefore, in recent years, industrial units such as coal direct liquefaction and kerosene co-refining have gradually adopted FeOOH-based catalysts. The intermediate product of the FeOOH synthesis process is green rust. Green rust (English name: green rusts) is a layered do...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J23/78B01J23/80B01J23/882C10G1/00C10G1/06C10G1/08C10G45/00C10G47/12C10G49/04
Inventor 李大鹏刘忠文
Owner 李大鹏
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