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Loading nano Ni-B type catalyst by using Al2O3 and C as carrier, and preparation method thereof

A carrier loading and catalyst technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve complex preparation process, uneven distribution of metal particles, inter-particle It is easy to cause problems such as agglomeration and achieve high catalytic performance

Inactive Publication Date: 2013-01-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process is relatively complicated, and the prepared metal particles are unevenly distributed on the carrier, and the particles are prone to agglomeration

Method used

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  • Loading nano Ni-B type catalyst by using Al2O3 and C as carrier, and preparation method thereof
  • Loading nano Ni-B type catalyst by using Al2O3 and C as carrier, and preparation method thereof
  • Loading nano Ni-B type catalyst by using Al2O3 and C as carrier, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1.454g of Ni(NO 3 ) 2 ·6H 2 O, 1.8757g of Al(NO 3 ) 3 9H 2 O and 1.5457g of H 3 BO 3 Dissolve in 50ml deionized water to prepare Ni(NO 3 ) 2 , Al(NO 3 ) 3 and H 3 BO 3 The mixed solution of which Ni 2+ The concentration is 0.10mol / L, Al 3+ The concentration of boric acid is 0.10mol / L, and the concentration of boric acid is 0.50mol / L; an alkaline solution is prepared by dissolving 3g of NaOH in 100ml of deionized water, wherein the concentration of NaOH is 0.75mol / L.

[0026] Add the mixed solution prepared above into the reaction vessel and ultrasonically disperse for 20 minutes, add the alkaline solution dropwise into the above mixed salt solution reaction vessel, adjust the pH=10 of the solution; 2 Crystallize at 65° C. for 24 hours under atmosphere, cool to room temperature, wash the filter cake with deionized water until neutral, and obtain a precipitate.

[0027] Dissolve 4.95g of glucose into 40ml of deionized water to prepare a solution, mix the pr...

Embodiment 2

[0030] 2.181g of Ni(NO 3 ) 2 ·6H 2 O, 1.8757g of Al(NO 3 ) 3 9H 2 O and 2.3186g of H 3 BO 3 Dissolve in 50ml deionized water to prepare Ni(NO 3 ) 2 , Al(NO 3 ) 3 and H 3 BO 3 The mixed solution of which Ni 2+ The concentration is 0.15mol / L, Al 3+ The concentration of boric acid is 0.10mol / L, and the concentration of boric acid is 0.75mol / L; an alkaline solution is prepared by dissolving 3g of NaOH in 100ml of deionized water, wherein the concentration of NaOH is 0.75mol / L.

[0031] Add the prepared mixed solution into the reaction container, ultrasonically disperse for 20 minutes, take the alkaline solution and add it dropwise to the above-mentioned mixed salt solution reaction container, and adjust the pH of the solution to 10; 2 Crystallize at 65° C. for 24 hours under atmosphere, cool to room temperature, wash the filter cake with deionized water until neutral, and obtain a precipitate.

[0032] Dissolve 6.188g of glucose into 40ml of deionized water to prepa...

Embodiment 3

[0035] 2.908g of Ni(NO 3 ) 2 ·6H 2 O, 1.8757g of Al(NO 3 ) 3 9H 2 O and 3.0915g of H 3 BO 3 Dissolve in 50ml deionized water to prepare Ni(NO 3 ) 2 , Al(NO 3 ) 3 and H 3 BO 3 The mixed solution of which Ni 2+ The concentration is 0.20mol / L, Al 3+ The concentration of boric acid is 0.10mol / L, and the concentration of boric acid is 1.0mol / L; an alkaline solution is prepared by dissolving 3g of NaOH in 100ml of deionized water, wherein the concentration of NaOH is 0.75mol / L.

[0036] Add the prepared mixed solution into the reaction container, ultrasonically disperse for 20 minutes, take the alkaline solution and add it dropwise to the above-mentioned mixed salt solution reaction container, and adjust the pH of the solution to 10; 2 Crystallize at 65° C. for 24 hours under atmosphere, cool to room temperature, wash the filter cake with deionized water until neutral, and obtain a precipitate.

[0037] Dissolve 7.425g of glucose into 40ml of deionized water to prepar...

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Abstract

The invention provides a loading nano Ni-B type catalyst by using Al2O3 and C as a carrier, and a preparation method thereof. The active components of the catalyst is a B-doped metal Ni-based catalyst by embedding B in crystal lattice of Ni; and the carrier is co-formed by Al2O3 and C. The method comprises the steps of preparing a layered precursor of borate-intercalation NiAl-BO3-LDHs through supramolecular intercalation; forming a hybrid composite of NiAl-BO3-LDHs / C by using a hydrothermal carbonization method of carbohydrate molecules; and finally preparing the uniformly-dispersed and unagglomerated Ni-B nanocatalyst loaded by Al2O3 and C through a temperature programming in-situ reduction method in an inert atmosphere. The high-dispersed loading nano Ni-B type catalyst has good catalytic hydrogenation performance when being used in the hydrogenation dechlorination reaction of chlorobenzene.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a 2 o 3 and C are carrier-loaded nano Ni-B catalysts and a preparation method thereof. The catalyst is used for catalytic hydrogenation of chlorobenzene. technical background [0002] In 1865, benzene became an industrial product. Originally recovered from coal tar. With the expansion of its use, its output continued to rise, and by 1930 it had become one of the world's top ten tonnage products. Benzene is also a basic petrochemical raw material. After the 1950s, with the increasing demand for benzene in the industry, especially the growing plastics industry, the output of benzene and the technical level of production are regarded as one of the symbols of the development level of a country's petrochemical industry. Catalytic hydrodechlorination is the current focus of petrochemical research. Catalytic hydrodechlorination can convert chlorine-containing compound...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C07C15/04C07C1/30
CPCY02P20/52
Inventor 李峰王一鹤王佳
Owner BEIJING UNIV OF CHEM TECH
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