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Bio-reduction preparation method of palladium catalyst

A palladium catalyst, biological technology, applied in the field of palladium catalyst bioreduction preparation, can solve the problems such as the application of Pd nanoparticles has not been reported

Inactive Publication Date: 2012-10-24
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Yang, at normal temperature, plant biomass extracts reduce Pd ions to 0-valent Pd (J Nano.Res.12(5):1589-1598.), the reduction speed and the prepared nano-Pd particles can be compared with Comparable to traditional preparation methods, but the application of Pd nanoparticles prepared from biomass in catalysts has not been reported

Method used

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  • Bio-reduction preparation method of palladium catalyst
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  • Bio-reduction preparation method of palladium catalyst

Examples

Experimental program
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Embodiment 1

[0020] Preparation of orientalis leaf extract: take 3g of orientalis leaf dry powder, add 300mL of deionized water, put it in a constant temperature water bath shaker at 30°C, shake at 150r / min for 2h, filter, and obtain 10g / L orientalis extract. Catalyst preparation: Take 380 μL of Pd(NO 3 ) 2 The solution was added to 27 mL of deionized water and mixed well. Add 0.6g CeO 2 carrier, stirred for 0.5h to promote the adsorption of the carrier to the precursor. Then, add 30 mL of the above-mentioned orientalis leaf extract, and continue to stir for 1 h. After vacuum drying for 20 h, catalyst A was obtained.

Embodiment 2

[0022] The preparation of orientalis leaf extract is as in Example 1. Catalyst preparation: Take 380 μL of Pd(NO 3 ) 2 The solution was added to 27 mL of deionized water and mixed well. Add 0.6g CeO 2 Carrier, continue to stir for 0.5h to promote the full adsorption of the precursor to the carrier. Add 30 mL of the above-mentioned orientalis leaf extract, and continue stirring for 1 h. Vacuum dried for 20h. Calcined at 100°C for 2h in an air atmosphere to obtain catalyst B.

Embodiment 3

[0024] The preparation of orientalis leaf extract is as in Example 1. Catalyst preparation: Take 380 μL of Pd(NO 3 ) 2 The solution was added to 27 mL of deionized water and mixed well. Add 0.6g CeO 2 Carrier, continue to stir for 0.5h to promote the full adsorption of the precursor to the carrier. Add 30 mL of the above-mentioned orientalis leaf extract, and continue stirring for 1 h. Vacuum drying for 20 hours, followed by calcination at 300°C for 2 hours in an air atmosphere to obtain catalyst C.

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Abstract

The invention provides a bio-reduction preparation method of a palladium catalyst, relating to the palladium catalyst. The bio-reduction room-temperature preparation method of the palladium catalyst without adding any chemical protectant is provided. The preparation method comprises the steps of adding plant biomass dry powder in water, oscillating, and filtering to collect filtrate; calcining cerium nitrate hexahydrate (Ce(NO3)3.6H2O) solid to obtain carrier CeO2; adding the carrier CeO2 into palladium nitrate (Pd(NO3)2) aqueous solution to obtain a mixture; adding the filtrate into the mixture to obtain a mixed solution containing palladium with total content of 0.5 mmol / L, stirring, vacuum-filtering, washing, drying, and calcining to obtain the palladium catalyst.

Description

technical field [0001] The invention relates to a palladium catalyst, in particular to a method for preparing a palladium catalyst through biological reduction. Background technique [0002] Low-temperature oxidation catalysts for CO have broad application prospects. In life, CO low-temperature oxidation catalysts can be used in gas masks and air purifiers; in military, they can be used in closed-cycle CO 2 In the laser, the CO generated in the laser is regenerated into CO on-site 2 Enter the circulation system and continue to use; in industry, such as ammonia synthesis industry, it is used to remove trace CO impurities; in the field of catalysis, because CO reacts with oxygen to generate CO 2 The reaction is a simple reaction without side reactions, which is easy to study, so it is often used as a model reaction to verify various theories. In recent years, a variety of catalysts for low-temperature oxidation of CO have been reported, including transition metal oxide cata...

Claims

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Application Information

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IPC IPC(8): B01J23/63
Inventor 李清彪朱婧杜明明詹国武刘承潘晨景孝廉黄加乐孙道华
Owner XIAMEN UNIV
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