A paper type catalyst and a preparing method thereof

A catalyst and paper-type technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of short service life and low catalyst activity, and achieve simple operation Easy to operate, good gas diffusibility, excellent mechanical properties and catalytic properties

Active Publication Date: 2018-12-14
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low catalyst activity and short service life of existing soot catalytic combustion, the invention provides a paper-type catalyst

Method used

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  • A paper type catalyst and a preparing method thereof
  • A paper type catalyst and a preparing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] The present embodiment provides a kind of sepiolite / mullite fiber paper catalyst, and its preparation method comprises the following steps:

[0052] Step 1. Grind the raw sepiolite in a mortar for 10 minutes to disperse the agglomerated fibers and powder, and sieve through 20 to 40 meshes to remove short fibers and impurity minerals to obtain sepiolite fibers. Add the sepiolite fiber to 6mol / L concentrated hydrochloric acid, the mass ratio of the sepiolite fiber and concentrated hydrochloric acid is 1:20, soak for 8h, and sieve through 40 meshes to remove a large amount of sepiolite associated minerals (talc, calcite, etc.) , washed with deionized water until neutral, dried to obtain acidified modified sepiolite fiber;

[0053] Step 2, crushing the mullite fiber, firstly crushing it, and then putting it into a material pulverizer for further pulverization, the speed of the pulverizer is 300 rpm, and the time is 10 minutes;

[0054] Step 3, be 1:0.1:0.2:0.1:0.08:350 acc...

Embodiment 2

[0058] The present embodiment provides a kind of sepiolite / mullite fiber paper catalyst, and its preparation method comprises the following steps:

[0059] Step 1. Grind the raw sepiolite in a mortar for 10 minutes to disperse the agglomerated fibers and powder, and sieve through 20 to 40 meshes to remove short fibers and impurity minerals to obtain sepiolite fibers. The foam stone fiber is added in 3mol / L concentrated hydrochloric acid, and the mass ratio of described sepiolite fiber and concentrated hydrochloric acid is 1:30, soaks 16h, sieves through 40 meshes, removes a large amount of sepiolite associated minerals (talc, calcite, etc.) , washed with deionized water until neutral, dried to obtain acidified modified sepiolite fiber;

[0060] Step 2, crushing the mullite fiber, firstly crushing it, and then putting it into a material pulverizer for further pulverization, the speed of the pulverizer is 300 rpm, and the time is 10 minutes;

[0061] Step 3, according to the ma...

Embodiment 3

[0065] The present embodiment provides a kind of sepiolite / mullite fiber paper catalyst, and its preparation method comprises the following steps:

[0066] Step 1. Grind the raw sepiolite in a mortar for 10 minutes to disperse the agglomerated fibers and powder, and sieve through 20 to 40 meshes to remove short fibers and impurity minerals to obtain sepiolite fibers. The foam stone fiber is added in 4mol / L concentrated hydrochloric acid, and the mass ratio of described sepiolite fiber and concentrated hydrochloric acid is 1:40, soaks 12h, sieves through 40 meshes, removes a large amount of sepiolite associated minerals (talc, calcite, etc.) , washed with deionized water until neutral, dried to obtain acidified modified sepiolite fiber;

[0067] Step 2, crushing the mullite fiber, firstly crushing it, and then putting it into a material pulverizer for further pulverization, the speed of the pulverizer is 300 rpm, and the time is 10 minutes;

[0068] Step 3, according to the ma...

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Abstract

The invention relates to the technical field of catalyst material preparation and particularly discloses a paper type catalyst and a preparing method thereof. The catalyst includes a composite carrierconsisting of modified sepiolite fibers and ceramic fibers and active components loaded by the composite carrier. The method includes subjecting sepiolite fibers to activation modification; then pulping the modified sepiolite fibers, ceramic fibers, an inorganic adhesive and an organic adhesive; pouring the obtained pulp into a paper sheet molding machine; performing vacuum suction filtration toremove water, molding, and calcination in a high-temperature furnace; soaking a product in an active-component salt solution; and roasting the product after the product is dried to obtain the paper type catalyst. The prepared catalyst has good mechanical properties. The sepiolite has high adsorbability so that a problem that active components in other catalysts are liable to lose can be avoided after active component loading, and fiber paper having a porous characteristic can provide more active sites for a catalytic reaction, thus improving reaction activity of the catalyst.

Description

technical field [0001] The invention relates to the technical field of catalyst material preparation, in particular to a paper-type catalyst and a preparation method thereof. Background technique [0002] With the development of diesel engines in today's society, the content of diesel soot particles in the atmosphere is gradually increasing, and it has become one of the main sources of urban fine particle pollution. In diesel engine exhaust purification, particulate filter (DPF) has been widely used and extensively studied. Although the quantity and quality of particulate matter emitted by vehicles using fuel with high sulfur content is greater than that of vehicles using low sulfur content, after being filtered by DPF, no matter what kind of fuel is used, the quantity and quality of particulate matter will be greatly reduced. At present, DPF devices are mainly honeycomb ceramics, foam ceramics and wire mesh, but DPF channels are easily blocked by trapped soot particles, re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/16B01J23/04B01J23/10B01J23/72B01J23/745B01J23/755B01J23/83B01J35/02F01N3/023
CPCB01J21/16B01J23/04B01J23/10B01J23/72B01J23/745B01J23/755B01J23/83B01J35/02F01N3/0231
Inventor 于刚栾昌义时晓轩程晓张光磊
Owner SHIJIAZHUANG TIEDAO UNIV
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