Method for adsorbing palladium falling off in glucose oxidation process by active carbon

An activated carbon adsorption and oxidation process technology, applied in the chemical field, can solve the problems of difficult nanofiltration, difficult to popularize and apply, and achieve the effects of simple method, good recovery effect and easy operation.

Inactive Publication Date: 2012-02-01
HENAN XINGFA FINE CHEM
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oxidation solution and the catalyst are circulated back and forth through the pump for many times. During this process, the activated carbon is broken and the palladium falls off. This method of removing palladium is called physical removal of palladium, which means that palladium exists in the form of metal in the glucose oxidation solution. Therefore, there are two ways to reclaim palladium. The one is to take recovery by filtration, and the other is to ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] The specific embodiments of the present invention will be described in detail below with reference to the examples.

[0008] In the implementation of the present invention, it can be realized by the following specific methods: place 50 g of activated carbon in a container, add 6-7 L of the oxidizing liquid produced in the production process of sodium gluconate, stir evenly, and let stand for 25-35 minutes at room temperature (standstill The time can be different according to the level of room temperature and the amount of oxidizing liquid), filter, recover the filtrate, and return the filtered activated carbon to the container, repeat this 10 times, and adsorb the palladium that falls off during the glucose oxidation process on the surface of the activated carbon , to achieve the purpose of recovering palladium (recovering palladium from activated carbon is a conventional method, which will not be described in detail), or directly used as a palladium catalyst with activa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for adsorbing palladium falling off in the glucose oxidation process by active carbon, which can effectively solve the recovery problem of the palladium falling off in the glucose oxidation process. In order to solve the problem, the method has the technical scheme that the active carbon is placed in a container, oxidation liquid generated in the gluconic acid sodium salt production process is added, the active carbon and the oxidation liquid are uniformly stirred, the still standing is carried out at the room temperature, the materials are filtered, filter liquid is recovered, the filtered active carbon is returned to the container, the operations are repeated for many times in such a way until the palladium falling off in the glucose oxidation process is adsorbed on the surface of the active carbon, the goal of recovering the palladium is realized, or the active carbon is directly used as a palladium catalyst of a carrier. The method is simple and is easy to operate, the recovering effect is good, and the method belongs to great innovation on the recovery of the palladium falling off in the glucose oxidation process.

Description

technical field [0001] The invention relates to chemical industry, in particular to a method for adsorbing palladium that falls off during the oxidation of glucose with activated carbon. Background technique [0002] When using the multi-metal catalyst to catalyze the oxidation of glucose, the activated carbon particles are broken due to the repeated circulation of the spray method, resulting in the palladium crystal particles falling off. According to statistics, the palladium that falls off accounts for about 35% of the palladium in the catalyst, that is to say, the catalyst contains 1000g of palladium, and only 650g of palladium is finally recovered, and 350g of palladium falls off. According to the current market price of 180 yuan / g, it will lose 63,000 yuan. Yuan. Therefore, how to recover the lost palladium is worth studying. [0003] To recover the palladium lost during glucose oxidation, it is necessary to understand the process of glucose oxidation. In the proces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C22B7/00C22B11/00
CPCY02P10/20
Inventor 安庆堂资从云冯彬彬王建中张庭静
Owner HENAN XINGFA FINE CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap