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A kind of monolithic catalyst and its preparation method and application

A catalyst and self-contained technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high energy consumption, secondary pollution, and high removal rate of VOCs, and achieve high permeability and easy Filling, easy molding effect

Active Publication Date: 2016-01-20
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical methods include adsorption, condensation, and membrane separation. This is a non-destructive method. Its advantage is that VOCs can be recovered, but it is easy to cause secondary pollution; chemical methods include incineration, thermal or photocatalytic oxidation, Biological method, etc. This is a destructive method, which has the advantage of high VOCs removal rate, but consumes more energy

Method used

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  • A kind of monolithic catalyst and its preparation method and application
  • A kind of monolithic catalyst and its preparation method and application
  • A kind of monolithic catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065]1. Weigh 5 grams of nickel metal fibers with a diameter of 8 microns and a length of 2 to 5 mm, 2.5 grams of cellulose fibers with a length of 0.1 to 1 mm, and 1.5 liters of water, and add them to the mixer, and fully stir to form a uniformly dispersed fiber slurry Then transfer it to the paper machine, add water to 8.5 liters, stir, drain and shape; after drying, bake at 500°C in air for 1 hour; then sinter at 950°C in hydrogen for 1 hour, and pass the thickness of the product The pressing is controlled at 1 mm to obtain a sintered metal nickel fiber skeleton, expressed as Ni8-SMF;

[0066] 2. Cut the sintered metal nickel fiber skeleton obtained in step 1 into a disc with a diameter of 18 mm and weigh 5 grams and place it in a 50 ml beaker. At room temperature, add 0.1 gram of aluminum with a particle size of 1 to 3 microns powder (mass ratio of aluminum powder / metal carrier is 2 / 100) impregnated with equal volume, then dried, and then carried out solid-solid alloying ...

Embodiment 2

[0081] One, with the step one of embodiment 1;

[0082] Two, with the step 2 of embodiment 1;

[0083] 3. The metal phase skeleton after alloying treatment obtained in step 2 is subjected to an aluminum extraction reaction at room temperature to 60° C. with a sodium hydroxide aqueous solution with a concentration of 15 wt % for 1 hour, rinsed with distilled water and dried, and then placed in the Calcined in the air at 500°C for 1 hour to obtain a porous metal phase support for anchoring oxides, expressed as NiO-Ni8-SMF;

[0084] 4. Weigh 5 grams of the metal phase carrier prepared in step 3, and use 0.025 gram of Pd and 0.125 gram of CeO 2 The nitrate aqueous solution was impregnated with an equal volume at room temperature, and after drying, it was baked at 500°C in air for 2 hours to obtain a monolithic catalyst supporting palladium-cerium oxide on a sintered nickel metal fiber carrier anchored by NiO.

[0085] Through plasma inductively coupled atomic emission spectromet...

Embodiment 3

[0088] One, with the step one of embodiment 1;

[0089] Two, with the step 2 of embodiment 1;

[0090] 3. The metal phase skeleton after alloying treatment obtained in step 2 is subjected to an aluminum extraction reaction at room temperature to 60° C. with a sodium hydroxide aqueous solution with a concentration of 15 wt % for 1 hour, rinsed with distilled water and dried, and then placed in the Calcined in the air at 450°C for 1 hour to obtain a porous metal phase support for anchoring oxides, expressed as NiO-Ni8-SMF;

[0091] Four, take by weighing 5 grams of the metal phase carrier that step 3 makes, with the mixed aqueous solution of palladium nitrate, chloroauric acid and calcium nitrate containing 0.025 gram of Pd, 0.025 gram of Au and 0.125 gram of CaO, carry out equal volume impregnation at room temperature, After drying, bake at 500° C. for 2 hours in the air to obtain a monolithic catalyst loaded with palladium-gold-calcium oxide on a sintered nickel metal fiber c...

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Abstract

The invention discloses a packaged catalyst, a preparation method and application of the packaged catalyst. The packaged catalyst is characterized by loading active precious metal or loading active precious metal and an additive metal oxide on a metal phase carrier of a porous anchor-attached oxide. The preparation method of the catalyst comprises the steps of firstly, carrying porous processing on a metal phase framework or alloyed metal phase framework by using acid or alkali and roasting to prepare the metal phase carrier of the porous anchor-attached oxide; and then performing equivalent-volume impregnation processing and roasting on the prepared metal phase carrier by using an M1 ion-containing solution, or an M1 ion-containing solution and an M2 ion-containing solution, or an M1 ion and M2 ion-containing mixed solution to prepare the packaged catalyst. The anchor-attached oxide provided by the invention can be used for deoxidation purification of coalbed methane and catalytic combustion removal reactions of low-concentration methane and VOCs (Volatile Organic Compounds), has the advantages of high efficiency, high activity and high selectivity, and has a remarkable industrial application value.

Description

technical field [0001] The present invention relates to a monolithic catalyst and its preparation method and application, in particular to a monolithic catalyst that is loaded with active noble metals or loaded with active noble metals and additive metal oxides on a metal phase support of porous anchored oxides. A loaded catalyst, its preparation method and its application in the deoxidation and purification of coal bed gas and the catalytic combustion removal of low-concentration methane and VOCs (volatile organic compounds) belong to the field of catalytic technology. Background technique [0002] Coalbed methane is commonly known as gas, and its main component is methane, which is a kind of unconventional natural gas associated / co-generated with coal. Because coalbed methane does not contain harmful impurities such as sulfur, which are essential to conventional natural gas, and does not contain carcinogenic and toxic substances such as benzene, mercury, and lead, coalbed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/44B01J35/10B01J32/00F23G7/07
Inventor 路勇张巧飞李亚坤王纯正韩璐蓬刘晔
Owner EAST CHINA NORMAL UNIV
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