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Preparation method of heat-resistant anti-coking load-type gold nanoparticle catalyst

An anti-coking, load-bearing technology, applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve problems such as temperature rise and gold nano-agglomeration, and achieve good results The effect of economic benefits

Active Publication Date: 2017-02-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the temperature of some reactions is relatively high, and the temperature rises, and the problem of high temperature agglomeration of gold nanometers still exists.

Method used

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  • Preparation method of heat-resistant anti-coking load-type gold nanoparticle catalyst
  • Preparation method of heat-resistant anti-coking load-type gold nanoparticle catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0021] First put 100g of cyanobacteria in 1L of an aqueous solution containing 5g of chloroauric acid, stir or shake for 3 hours, and recover the cyanobacteria that have adsorbed heavy metal ions through a filtering device or by collecting suspended solids on the water surface. Then, the collected gold-adsorbed cyanobacteria were dried at 100°C for 2 hours, and then the dried cyanobacteria were put into a tubular reactor, and nitrogen or inert gas was continuously introduced to remove the air remaining in the reactor. Gradually increase the temperature in the reactor at a heating rate of 10°C / min to 600°C. After keeping this temperature for 4 hours, let the reactor cool to room temperature naturally, and collect the residual solids in the reactor, which is the high temperature resistant supported gold nano catalyst.

Embodiment 2

[0023] The dry gold-attached cyanobacteria were obtained according to the method of Example 1, except that 100 g of cyanobacteria were placed in 1 L containing 1 g of chloroauric acid, and the temperature in the reactor was 700° C., and the temperature was maintained for 2 hours.

Embodiment 3

[0025] The dried gold-attached cyanobacteria were obtained according to the method of Example 1, except that 100 g of cyanobacteria were placed in 1 L containing 2.5 g of chloroauric acid, and the temperature in the reactor was 650° C., and the temperature was maintained for 10 hours.

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Abstract

The invention relates to a preparation method of a heat-resistant anti-coking load-type gold nanoparticle catalyst. The preparation method includes: adding algae or aquatic plants into a gold precursor solution for reduction reaction in adsorption; taking out the algae or the aquatic plants to perform dehydration treatment, placing the algae or the aquatic plants in an oxygen-isolated reactor for dry distillation and heating the algae or the aquatic plants to the temperature ranging from 600 to 700DEG C; naturally cooling to indoor temperature to acquire the black-powder type solid catalyst. Compared with the prior art, a load-type gold nanoparticle catalyst is prepared by subjecting gold ions to reduction-adsorption with algae of blue algae, green algae and the like or aquatic plants of water caltrop, water nymph and the like prior to dry distillation in high temperature; the preparation method has the advantages of being anti-coking and heat resistant, neither coking nor agglomerating occurs under the temperature of 700DEG C, feasibility that the gold nanoparticle catalyst can be used for catalysis under the high temperature of 700DEG C is realized, and the preparation method is green, pollution free and good in economic return.

Description

Technical field [0001] The patent of the present invention relates to the technical field of chemical product preparation, in particular to a process method for preparing a high-temperature resistant and coking-resistant supported gold nano-catalyst by using aquatic plants or algae plants. Background technique [0002] The use of biomass to reduce the preparation of nanoparticles with different morphologies and particle sizes, as an environmentally friendly preparation method for nanomaterials that has emerged in recent years, has been widely favored by researchers and is a great potential alternative to traditional chemical methods. And physical method for the preparation of gold nanoparticles. The obvious advantage of biological method is that it utilizes a large amount of cheap and easily available biomass resources in nature, the reduction conditions are mild (generally at room temperature), and there is no need to add additional chemical reagents other than metal precursors ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/52
CPCB01J23/52B01J37/084
Inventor 孙津生尹红吕灏杨洁魏东梅崔承天
Owner TIANJIN UNIV