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Application of metal catalysts to catalyze the method for synthesizing two (dimethylaminoethyl) ethers

A dimethylaminoethyl, metal catalyst technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, heterogeneous catalyst chemical element, molecular sieve catalyst, etc., can solve the problem of energy-saving and environmental protection production and pollution control costs. It can achieve the effects of green and clean production, low production cost, obvious economic and environmental protection effects, etc.

Active Publication Date: 2019-04-16
HEBEI HUAMAO WEIYE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current method of synthesizing BDMAEE is easy to bring SO 2 , HCl and other toxic and harmful gases and trimethylamine organic waste brine, etc., the environmental hazards are great, the cost of pollution control is high, and it cannot meet the needs of energy-saving and environmentally-friendly production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 160 grams of Ni(NO 3 ) 2 ·6H 2 O, 200g Cu(NO 3 ) 2 ·6H 2 O, 80 grams of Cr (NO 3 ) 3 9H 2 O, add 1.5 liters of water to prepare a nitrate solution. The preparation concentration is 20% Na 2 CO 3 aqueous solution.

[0031] At 50°C, under strong stirring, Na 2 CO 3 Add the aqueous solution dropwise to the metal nitrate aqueous solution until pH = 8; then filter, wash the filter cake with deionized water for 3 times, dry at 150°C for 24 hours, roast at 480°C for 4 hours, and grind to 300 mesh with a universal mill , to obtain a mixture of metal oxides.

[0032] Weigh 110 grams of metal oxide mixture powder, 10 grams of dry base USY molecular sieve, 150 grams of pseudo-thin water alumina, 22.5 grams of starch, knead evenly, add 87.8g of 7% nitric acid aqueous solution, mix evenly, and use a single-screw extruder Extruded rods (cylindrical rods, 3 mm in diameter), dried at room temperature for 1 day, dried at 150°C for 24 hours, and calcined at 540°C for ...

Embodiment 2

[0036] Weigh 145 grams of Cu(NO 3 ) 2 ·6H 2 O, 45 g Co(NO 3 ) 2 ·6H 2 O, 10 grams of Zn(NO 3 ) 3 ·6H 2 O, add 1 liter of water to prepare a nitrate solution. The preparation concentration is 15% Na 2 CO 3 aqueous solution.

[0037] At 40°C, under strong stirring, Na 2 CO3 Add the aqueous solution dropwise to the metal nitrate aqueous solution until pH = 8; then filter, wash the filter cake with deionized water for 3 times, dry at 150°C for 24 hours, roast at 530°C for 4 hours, and grind it to 300 mesh with a universal mill , to obtain a mixture of metal oxides.

[0038] Weigh 50 grams of this metal oxide mixture powder, 10 grams of dry base USY molecular sieve, 10 grams of HZSM-5 molecular sieve (silicon-aluminum ratio is 200), 30 grams of pseudo-thin water alumina, 4.5 grams of starch, knead evenly, add 31.4g of 7% nitric acid aqueous solution, mixed evenly, extruded with a single-screw extruder (cylindrical strip, diameter 4mm), dried at room temperature for 2 d...

Embodiment 3

[0042] Weigh 200 grams of Cu(NO 3 ) 2 ·6H 2 O, 2.6 g of Pt(NO 3 ) 2 , 3.5 g Ce(NO 3 ) 3 ·6H 2 O, 22ml 50%Mn(NO 3 ) 2 Aqueous solution, 1.2 g La(NO 3 ) 3 ·6H 2 O plus 1 liter of water to make a nitrate solution. The preparation concentration is 25% Na 2 CO 3 aqueous solution.

[0043] Under the condition of 65°C, Na 2 CO 3 Add the aqueous solution dropwise to the metal nitrate aqueous solution until pH = 8; then filter, wash the filter cake with deionized water for 3 times, dry at 150°C for 24 hours, roast at 450°C for 4 hours, and grind to 300 mesh with a universal mill , to obtain a mixture of metal oxides.

[0044] Weigh 55 grams of this metal oxide mixture powder, 19 grams of dry base 200 mesh SiO 2 Powder, 26 grams of pseudo-thin alumina, 3.9 grams of starch, kneaded evenly, added 31.2g of 7% nitric acid aqueous solution, mixed evenly, extruded with a single-screw extruder (cylindrical strip, diameter 5mm), dried at room temperature for 3 day, dried at 1...

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PUM

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Abstract

The invention discloses a method for synthesizing bis(dimethylaminoethyl)ether (BDMAEE) under the catalysis of a metal catalyst. The method comprises the following steps: preparing a metal oxide; then preparing the metal catalyst from the metal oxide; and with dimethylamine and dimethylaminoethoxyethanol as raw materials, preparing BDMAEE under the catalysis of the metal catalyst, wherein a main inorganic by-product is water, and produced organic by-products can be recycled through distillation and purification. The method provided by the invention has good economic benefits and overcomes the problem of environmental pollution of conventional BDMAEE production processes.

Description

technical field [0001] The invention belongs to the technical field of bis(dimethylaminoethyl) ether synthesis, and specifically relates to the catalytic action of active metal components, using dimethylaminoethoxyethanol and dimethylamine as raw materials to generate bis(dimethylaminoethyl) in one step. Aminoethyl) ether process. Background technique [0002] Bis(dimethylaminoethyl)ether (BDMAEE) is an important foaming catalyst for polyurethane flexible foam and one of the three major polyurethane catalysts. Its appearance is light yellow transparent liquid, which is infinitely soluble in water. BDMAEE has extremely high catalytic activity and selectivity for polyurethane foaming reaction. Because its pure product is too active, it is often mixed with some alcohol solvents and used as a solution. Mainly used in flexible polyurethane foam systems. [0003] Dimethylaminoethoxyethanol (DMAEE) is a commonly used organic raw material and intermediate, and can also be used as ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C217/08C07C213/02B01J29/16B01J29/80B01J23/89B01J23/83
CPCB01J23/002B01J23/83B01J23/8986B01J29/08B01J29/166B01J29/40B01J29/80B01J2229/20B01J2229/40B01J2523/00C07C213/02C07C217/08B01J2523/17B01J2523/31B01J2523/3706B01J2523/3712B01J2523/41B01J2523/72B01J2523/828B01J2523/32B01J2523/33B01J2523/3775B01J2523/845B01J2523/847
Inventor 路万里马利国孙艳荣褚彭涛郑本荣范振发吴晓亮张峰敏王涛
Owner HEBEI HUAMAO WEIYE TECH CO LTD
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