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Nickel-based amorphous hollow microsphere alloy catalyst, and preparation method and application thereof

A technology of alloy catalysts and amorphous alloys, applied in chemical instruments and methods, physical/chemical process catalysts, hydrocarbon production from oxygen-containing organic compounds, etc., can solve the limitation of heterogeneous catalysis kinetic mass transfer process, reduce catalyst The problems of service life and Ni dispersion are not high, and the effects of reducing thermodynamic diffusion resistance, reducing oxygen content and low density are achieved.

Inactive Publication Date: 2016-10-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Patents CN1179358A and CN1200955A disclose a supported catalyst composed of Ni-B, Ni-P amorphous alloy and a porous carrier material. The preparation method of the catalyst combines a nickel-containing porous carrier material with a BH-containing 4 - solution or containing H 2 PO 2 - Solution contact, formed by a simple impregnation method, the possible problem is that the dispersion of Ni is not high, there may be partial aggregation, and the mass transfer process in the heterogeneous catalytic kinetics is limited
This type of catalyst has poor temperature resistance and is prone to irreversible deactivation, which reduces the service life of the catalyst

Method used

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  • Nickel-based amorphous hollow microsphere alloy catalyst, and preparation method and application thereof
  • Nickel-based amorphous hollow microsphere alloy catalyst, and preparation method and application thereof
  • Nickel-based amorphous hollow microsphere alloy catalyst, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Weigh 10.0 g of dodecyl primary amine (DDA) and add it to a mixed solution of 500 ml of deionized water and 200 ml of ethanol, stir and dissolve in a water bath at 30°C, and keep stirring for 60 min to obtain a milky white opaque mixed solution. Then, 37.56 g of tetraethyl orthosilicate (TEOS) was added dropwise into the mixture, and the molar ratio of the final mixed colloid group was 1TEOS:0.30DDA:18.78EtOH:154H2O. The reaction was kept stirring at room temperature for 6 h to obtain a white precipitate. After filtering, washing with deionized water, and drying overnight in a vacuum oven at 55°C, the original powder of mesoporous SiO2 hollow microspheres without further treatment can be obtained. The raw powder was roasted in a muffle furnace, and the temperature was programmed from room temperature to 500 °C in an air atmosphere at a heating rate of 10 °C / min, kept at 500 °C for 4 h, and then naturally cooled to room temperature. The obtained sample was named HSS-1, ...

Embodiment 2

[0043] Weigh 10.0 g of cetyltrimethylammonium bromide (CTAB) and add it to a mixed solution of 400 ml of deionized water and 300 ml of ethanol, stir and dissolve in a water bath at 40°C, and keep stirring for 40 minutes to obtain a milky white opaque mixed solution. Then, 37.56 g of tetraethyl orthosilicate (TEOS) was added dropwise to the mixed solution, and the molar ratio of the final mixed colloid group was 1TEOS:0.26CTAB:28.17EtOH:123H2O. The reaction was kept stirring at room temperature for 7 h to obtain a white precipitate. After filtering, washing with deionized water, and drying in a vacuum oven at 65°C overnight, the mesoporous SiO without further treatment can be obtained. 2 Hollow microsphere powder. The raw powder was roasted in a muffle furnace, and the temperature was programmed from room temperature to 550 °C in an air atmosphere at a heating rate of 10 °C / min, kept at 550 °C for 4 hours, and then naturally cooled to room temperature. The obtained sample was...

Embodiment 3

[0045] Weigh 18.0 g of dodecyldimethyl tertiary amine (DMA12) and add it to a mixed solution of 450 ml of deionized water and 250 ml of ethanol, stir and dissolve in a water bath at 45°C, keep stirring for 30 min, and obtain a milky white opaque mixed solution. Then, 37.56 g of tetraethyl orthosilicate (TEOS) was added dropwise into the mixture, and the molar ratio of the final mixed colloid group was 1TEOS:0.27DMA12:23.48EtOH:138H2O. The reaction was kept stirring at room temperature for 8 h to obtain a white precipitate. After filtering, washing with deionized water, and drying overnight in a vacuum oven at 60°C, the original powder of mesoporous SiO2 hollow microspheres without further treatment can be obtained. The raw powder was roasted in a muffle furnace, and the temperature was programmed from room temperature to 600 °C in an air atmosphere at a heating rate of 10 °C / min, kept at 600 °C for 4 h, and then naturally cooled to room temperature. Obtained SiO 2 The mesopo...

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Abstract

The invention provides a nickel-based amorphous hollow microsphere alloy catalyst, and a preparation method and an application thereof. The catalyst adopts a meso-porous hollow microsphere as a carrier, nickel-based amorphous alloy is uniformly loaded on the surface of the carrier, and the catalyst comprises 0.1-30.0wt% of the nickel-based amorphous alloy and 70.0-99.9wt% of the meso-porous hollow microsphere. The preparation method of the catalyst comprises the following steps: preparing the meso-porous hollow sphere through a template guided synthesis technology, loading a soluble nickel salt on the meso-porous hollow sphere to obtain a nickel-containing meso-porous hollow microsphere carrier material, and allowing the nickel-containing meso-porous hollow microsphere carrier material to be in contact with and react with a BH<4><->-containing solution to prepare the nickel-based amorphous hollow microsphere alloy catalyst. The catalyst is used in the hydrodeoxygenation reaction of organic compounds containing an aromatic hydrogen C-O bond or an alkyl C-O bond, and has the advantages of high thermal stability, large specific surface area and fast mass transfer efficiency.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysis, and in particular relates to a nickel-based amorphous hollow microsphere alloy catalyst and its preparation method and application. Background technique [0002] Amorphous alloy is a new material with long-range disorder and short-range order structure. The disordered arrangement of its surface atoms leads to a considerable amount of atoms on the surface in a coordination unsaturated state. Due to its incomplete crystal planes, dislocations and segregation on crystal orders of different crystal planes, grain boundaries, edges and node vacancies, and other microstructural characteristics, it exhibits excellent catalytic activity and high product selectivity, attracting Many catalysis researchers at home and abroad have conducted extensive research on its preparation technology and application. [0003] However, the specific surface area of ​​amorphous alloys is small, and from a thermo...

Claims

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Application Information

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IPC IPC(8): B01J23/755B01J35/08C07C15/04C07C1/20
CPCY02P20/52
Inventor 张宗超王志光刘凯瑞毛璟博
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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