Supported catalyst and preparation method thereof

A supported catalyst and catalyst carrier technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of uneven dispersion of active substances, and achieve increased Effects of interaction, increased specific surface area, low price

Pending Publication Date: 2020-06-09
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a supported catalyst and a preparation method thereof, which solves the problem of uneven dispersion of active substances in the existing preparation method of supported catalysts

Method used

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  • Supported catalyst and preparation method thereof
  • Supported catalyst and preparation method thereof
  • Supported catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] This embodiment is a supported catalyst 20% Ni-SiO 2 (30wt% safflower powder (SBG)).

[0041] Weigh 34.67g tetraethyl orthosilicate and set aside. At room temperature, add 9.9094g Ni(NO 3 ) 2 ·6H 2 O, a certain amount of ultrapure water, 3.0697g of scallop powder, stirred at 120°C for 24 hours, dried at 120°C for 24 hours, put the dried sample in a muffle furnace, calcined at 600°C for 4 hours, and the heating rate was 10°C / min , to get the supported catalyst Ni-SiO 2 , the loading amount of Ni is 20%, which is recorded as 20% Ni-SiO 2 (30 wt% SBG).

[0042] The specific surface area BET of the supported catalyst of this embodiment is 371.7825m 2 g -1 .

Embodiment 2

[0044] This embodiment is a supported catalyst 20% Ni-SiO 2 (0 wt% SBG) preparation.

[0045] The difference between the present embodiment and embodiment 1 is only that the consumption of the kale powder is 0 g.

[0046] The specific surface area BET of the supported catalyst of this embodiment is 207.4457m 2 g-1 .

Embodiment 3

[0048] This embodiment is a supported catalyst 20% Ni-SiO 2 (3 wt% SBG) preparation.

[0049] The difference between this embodiment and embodiment 1 is only that the consumption of the scallop powder is 0.3069g.

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Abstract

The invention relates to the technical field of catalysts, in particular to a supported catalyst and a preparation method thereof. The invention discloses a preparation method of a supported catalyst.In the preparation method, hydroxyl of sesbania powder is complexed with metal ions, and the sesbania powder is crosslinked with a catalyst carrier precursor hydrolytic colloid product M-OH to form high-viscosity gel with a three-dimensional network structure, so that the interaction between an active component and a carrier is enhanced; the sesbania powder aqueous solution is high in viscosity,and in the drying process of the colloidal mixture, the sesbania powder can inhibit redistribution of the active component, so that the active component is uniformly distributed on the carrier, and the dispersion degree is relatively high. Besides, sesbania powder is low in price and easy to purchase, so that the preparation cost of the supported catalyst is saved, and the supported catalyst has very high economic value and conforms to the concept of environmental protection.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a supported catalyst and a preparation method thereof. Background technique [0002] Supported catalyst is the most commonly used catalyst in the chemical industry. This type of catalyst is easy to prepare, and the amount of metal active components is small and can be uniformly dispersed on the surface of the catalyst. [0003] The impregnation method is a preparation method of supported catalysts. Although the operation is very simple, many complicated problems are often encountered in the preparation process. For example, when the catalyst is drying, sometimes the active substances on the outer surface are covered by the active substances migrating on the inner surface due to the movement of the catalytic active substances to the outer surface, so that the active substances are dispersed unevenly, and the concentration of some active substances on the inner surface is reduced...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/72B01J23/75
CPCB01J23/755B01J23/72B01J23/75
Inventor 王铁军仇松柏张浅白勇
Owner GUANGDONG UNIV OF TECH
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