Method for preparing glyphosate by PMIDA catalytic oxidation

A catalytic oxidation, glyphosate technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic chemistry, etc., can solve the problems of inconvenient production and operation, difficult post-processing, low production cost, etc., to improve oxygen utilization. rate, speed up the reaction rate, and the effect of stable product quality

Active Publication Date: 2010-04-28
SHANDONG WEIFANG RAINBOW CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method improves upon existing methods for producing chemicals with improved efficiency while reducing costs associated therewith. By adding an antioxidizing agent during this step, it becomes possible to achieve better results compared to previous techniques. Additionally, since these processes involve reacting at very fast rates, they have potential benefits such as increased yields or lowered emissions from harmful substances produced when used over multiple generations of products. Overall, this technology provides technical means for creation of more efficient and effective chemistry solutions

Problems solved by technology

This patents describes various technical problem addressed in this patented text relating to producing industrially important compounds called glyphonitrochlorodimilte ammonium sulfone hydrate (GCSOH), commonly known as glyphocide. These substances were previously unknown because they had been found only once more frequently than other types of pesticids that could potentially harm crops when applied without proper monitoring due to safety concerns associated therewith such pesticides being less effective compared to others like imazapyr grass mboxer. Additionally, current processes involve expensive equipment and complex procedures involving multiple steps.

Method used

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  • Method for preparing glyphosate by PMIDA catalytic oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the 5A molecular sieve loaded with nano-nickel oxide:

[0023] Grind 200g of 5A molecular sieve with a mortar and sieve, take 40g of 20-100 mesh molecular sieve, add it to 70gNiSO4·6H2O and 50g30%NaOH mixed solution and reflux for 2h, at a stirring speed of 300r / min at 30°C Evaporate to dryness, wash with deionized water until neutral, dry and age in an oven at 100°C for 15h, then place the sample in a muffle furnace for calcination at 450°C for 3h, crush it after tableting, and take 40-70 mesh The sample acts as a pro-oxidant.

Embodiment 2

[0025] The preparation method of the 5A molecular sieve loaded with manganese dioxide-doped nano-nickel oxide:

[0026] The 5A molecular sieve of 200g was ground and sieved with a mortar, got 40g of molecular sieve of 20-100 mesh number, added 81gMn(NO 3 ) 2 , 119gNiSO4·6H2O and 80g30%NaOH mixed solution was refluxed for 4h, evaporated to dryness at 60°C at a stirring speed of 300r / min, washed with deionized water until neutral, dried and aged in an oven at 110°C for 18h, and then The sample was calcined at 500°C for 5 hours in a muffle furnace, crushed after tableting, and a sample of 40-70 mesh was taken as a co-oxidant.

Embodiment 3

[0028] The preparation method of the 5A molecular sieve loaded with nano-nickel oxide:

[0029] Grind and sieve 200g of 5A molecular sieve with a mortar, take 40g of 20-100 mesh molecular sieve, add it to 50gNiSO4·6H2O and 120g30%NaOH mixed solution and reflux for 3h, at 50°C at a stirring speed of 300r / min Evaporate to dryness, wash with deionized water until neutral, dry and age in an oven at 115°C for 19h, then place the sample in a muffle furnace for calcination at 450°C for 4h, crush it after tableting, and take 40-70 mesh The sample acts as a pro-oxidant.

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Abstract

The invention discloses a method for preparing glyphosate by PMIDA catalytic oxidation, comprising the following steps: 100-110 parts of PMIDA, 5-12 parts of activated carbon and 0.25-1.80 parts of pro-oxidants are added in 300 parts of water by mass part, the mixture is stirred, and then oxygen-containing gas with 70-100 percent of oxygen mass fraction is vented to the mixture to carry out catalytic oxidation reaction, the reaction temperature is 50-100 DEG C, the reaction pressure is 0.5-2.0MPa and the reaction time is 1-2h; after the reaction is finished, the solution is cooled and filtered to obtain filtrated mother liquid and a filter cake 1, the filtrated mother liquid is utilized in a circulating way, the filter cake 1 is hot-melted after water is added and then is filtered to obtain hot filtrate and a filter cake 2, the hot filtrate is cooled and crystallized to obtain solid glyphosate, and the filter cake 2 is recycled and used repeatedly. The method has stable product quality, can greatly improve utilization rate of oxygen and speed up the reaction rate; the production cost is low, formaldehyde can be effectively degraded, thereby meeting the industrial production requirements.

Description

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Claims

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Application Information

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Owner SHANDONG WEIFANG RAINBOW CHEM
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