Microporous ceramic catalyst carrier and preparation method thereof

A technology of catalyst carrier and microporous ceramics, which is applied in the direction of catalyst carrier, chemical instrument and method, physical/chemical process catalyst, etc. low effect

Inactive Publication Date: 2016-03-16
ZIBO JIAFENG MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a microporous ceramic catalyst carrier and its preparation method, microporous ceramsite, to solve the problem of low universality of the catalyst carrier

Method used

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  • Microporous ceramic catalyst carrier and preparation method thereof
  • Microporous ceramic catalyst carrier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Formula: 78% mass fraction, 300-mesh low-quality bauxite 700°C light-fired material, the composition and mass fraction after light-fired are shown in Table 1.

[0034] Table 1 Composition of bauxite after light burning

[0035] Element

SiO 2 (%)

Al 2 o 3 (%)

Fe 2 o 3 (%)

TiO 2 (%)

CaO(%)

MgO(%)

K 2 O(%)

Na 2 O(%)

Ignition loss (%)

content

50.14

44.31

2.84

1.19

0.35

0.22

0.25

0.10

0.60

[0036] Additive, mass fraction 21.1%, purity>99% water-soluble starch.

[0037] Dispersant, mass fraction 0.9% sodium polyacrylate.

[0038] Process:

[0039] (1) Lightly burn low-quality bauxite at 700° C., refine it to 300 mesh by ball milling, add additives with a mass fraction of 21.1% and 0.9% dispersant and mix uniformly to obtain a mixture;

[0040] (2) Add 80% of the mixture to the EIRICH vertical granulator for granulation, add 21% of atomized water, run at 5000rpm / ...

Embodiment 2

[0046] Formula: 84% mass fraction, 250 mesh low-quality bauxite 800°C lightly fired material, the composition after lightly fired is shown in Table 2.

[0047] Table 2 Composition of bauxite after light burning

[0048]

[0049] Additives, mass fraction 15%. Purity>99% water-soluble starch.

[0050] Dispersant, mass fraction 1.0% sodium polyacrylate.

[0051] Process:

[0052] (1) Low-quality bauxite is lightly burned at 800°C, ball milled to refine it to 250 mesh, and 15% of additives and 1.0% of dispersant are added to mix uniformly to obtain a mixture;

[0053] (2) Add 84% of the mixture to the EIRICH vertical granulator for granulation, add 18% of atomized water, run at 2500rpm / min for 15min to nucleate; run at 1000rpm / min for 50min to grow and form; Polish at 500rpm / min for 30min, add dry mixture powder with a mass fraction of 16%, and adjust the morphology.

[0054] (3) Dry the semi-finished ceramsite product at 105°C for 45 minutes, control the moisture to less ...

Embodiment 3

[0059] Formula: 87% mass fraction, 200-mesh low-quality bauxite 900°C light-fired material, the composition after light-fired is shown in Table 3.

[0060] Table 3 Composition of bauxite after light burning

[0061]

[0062] Additives, mass fraction 12%. Purity>99% water-soluble starch.

[0063] Dispersant, mass fraction 1.0% sodium polyacrylate.

[0064] Process:

[0065] (1) Low-quality bauxite is lightly burned at 900°C, ball milled to refine it to 200 mesh, and 12% of additives and 1.0% of dispersant are added by mass fraction and mixed uniformly to obtain a mixture;

[0066] (2) Add 90% of the mixture to the EIRICH vertical granulator for granulation, add 17% of atomized water, run at 5000rpm / min for 20min to nucleate; run at 2500rpm / min for 60min to grow and form; Polish at 1000rpm / min for 25min, add dry mixture powder with a mass fraction of 10%, and adjust the morphology.

[0067] (3) Dry the semi-finished ceramsite product at 105°C for 45 minutes, control the ...

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Abstract

The invention relates to a microporous ceramic catalyst carrier and a preparation method thereof. The microporous ceramic catalyst carrier comprises the following raw materials by mass: 70 to 85% of low-quality bauxitic clay, 10 to 25% of an additive and 0.5 to 1.5% of a dispersant. According to the invention, microporous ceramsite is employed, so the problem of low universality of a catalyst carrier is overcome; since the particle size of the ceramsite is small, deformability of the microporous ceramic catalyst carrier under the condition of a large quantity of the ceramsite is good, and the microporous ceramic catalyst carrier is adaptive to a variety of experiments and production and reaction positions; and cost is low.

Description

technical field [0001] The invention belongs to the field of catalysts, and in particular relates to a microporous ceramic catalyst carrier and a preparation method thereof. Background technique [0002] The catalyst / enzyme immobilization technology is an important means to make enzyme catalysis more widely and effectively used. It needs the following three aspects to complete: (1) extraction and purification of the original enzyme; (2) preparation of the carrier; ( 3) Immobilization of enzymes. At present, the research on enzyme purification technology and immobilization methods has been relatively developed. The success of immobilized enzymes mostly depends on the performance of the carrier design and synthesis of excellent and controllable carriers. Synthetic methods, as well as the adjustment of the pore structure of the carrier, and the functional modification of the pore surface. However, in actual use, the universality of the carrier is too poor, and the professional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J35/10B01J21/12
CPCB01J21/12B01J32/00B01J35/1052
Inventor 魏巍唐珂王进李宪杰孙洪巍金宝文
Owner ZIBO JIAFENG MINING
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