Indium-based two-component or three-component nanocatalyst as well as preparation and application thereof

A nano-catalyst and indium-based bicomponent technology, applied in the field of nano-materials, can solve the problems of difficult removal and cleaning of protective agents, influence on electrocatalytic performance, and environmental pollution by organic solvents, and achieve low production costs, mild conditions, and environmental friendliness Effect

Inactive Publication Date: 2017-06-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the reports in the literature are the preparation and synthesis of single In nanoparticles, and the preparation process often requires the use of organic solvents to pollute the environment, which has high requirements for reaction conditions, and the protective agent is difficult to remove and clean, which affects its electrocatalytic performance.

Method used

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  • Indium-based two-component or three-component nanocatalyst as well as preparation and application thereof
  • Indium-based two-component or three-component nanocatalyst as well as preparation and application thereof
  • Indium-based two-component or three-component nanocatalyst as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 In 2 Au nanocatalyst

[0037] Pipette 16.7 mL of InCl 3 aqueous solution (20mM) and 8.33mL of AuCl 3 After the aqueous solution (20mM) was stirred and mixed uniformly in a 250mL flask, N was passed into the mixed solution. 2 , the nitrogen flow rate was 50 ml / min, and after 10 min, 25 mL of sodium borohydride aqueous solution (50 mM) was added to the above system. The reaction was stopped after 20 minutes of reaction. The reacted mixture was transferred to a centrifuge test tube, centrifuged to obtain a solid product, washed with water and ethanol several times respectively, and dried in a vacuum oven at 60°C for 10 hours to obtain In 2 Au nanorod catalysts. figure 1 For the prepared In 2 Transmission electron microscopy (TEM) of the Au catalyst. The obtained catalyst was subjected to CO 2 The activity evaluation of the electrochemical catalytic reduction reaction, the specific steps are as follows: the obtained In2 The Au catalyst is ultrasonically di...

Embodiment 2

[0038] Example 2 In 6 Au nanocatalyst

[0039] The difference between this embodiment and Embodiment 1 is that the ratio of In and Au in this embodiment is 6:1. The In 6 Au catalyst for CO 2 The electrochemical reduction reaction is catalytically active.

Embodiment 3

[0040] Example 3 In 9 Au nanocatalyst

[0041] The difference between this embodiment and Embodiment 1 is that the ratio of In and Au in this embodiment is 9:1. The In 9 Au catalyst for CO 2 The electrochemical reduction reaction is catalytically active.

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Abstract

The invention relates to a supported type or non-supported type indium-based two-component or three-component nanocatalyst. The second or third component catalyst is one of platinum, palladium, gold, iridium, copper, silver, tin and lead, and in the catalyst, the molar ratio of indium to the second component or the total molar sum of the second component and the third component is 9 / 1-1 / 9; and when the catalyst is a carbon supported indium-based two-component or three-component nanocatalyst, metals in the catalyst account for 10-90% of the total mass of the catalyst. Preparation steps of the catalyst are as follows: introducing inert gas into prepared precursor solution, reducing, washing, and drying, so that the catalyst is obtained. The catalyst is a CO2 electrochemical reduction catalyst, a NOx removal catalyst and an organic molecule aqueous phase allylation catalyst.

Description

technical field [0001] The invention belongs to the field of nanometer materials, and specifically the invention relates to a supported or non-supported indium-based two-component or three-component nanocatalyst; the invention also relates to the preparation method and application of the catalyst. Background technique [0002] With the maturing of nanotechnology, the preparation and application of indium-based nanomaterials has become one of the hotspots of domestic and foreign scientific and technological research. [0003] Indium-based nanomaterials can be used for CO 2 Electrochemical reduction, NO x Elimination (Ren Lili, Zhang Tao, Xu Changhai, CN1151886C), aqueous phase allylation of organic molecules (Du Zhengyin, Li Yanchun, Progress in Chemistry, 22, 71) and hydrogen evolution corrosion inhibition of alkaline batteries. At present, laser ablation method, ultrasonic crushing method, phase transfer method, sol-gel method, low-temperature decomposition method of orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62B01J23/825B01J23/14B01D53/56B01D53/86
CPCB01J23/62B01D53/8628B01D2255/106B01D2255/20761B01D2255/209B01D2255/65B01D2257/40B01J23/14B01J23/825B01J35/0013
Inventor 孙公权李焕巧王素力
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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