Catalyst for preparing dinitrile compound from alicyclic hydrocarbon and synthetic method of dinitrile

A catalyst, alicyclic hydrocarbon technology, applied in the field of catalytic organic synthesis, can solve the problems of catalyst activity and selectivity to be improved, difficult activation of reaction raw materials, etc., to achieve the effects of easy process control, long reaction route and good selectivity.

Pending Publication Date: 2022-02-01
ANSHAN HIFICHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among them, using alicyclic alcohols, alicyclic ketones and cycloolefins as raw materials to prepare aliphatic dibasic nitriles requires the completion of selective oxidation ring-opening ammoxidation and other processes in the reaction process, and there are difficulties in the activation of reaction raw materials, catalyst activity and selectivity. It needs to be improved to reduce the occurrence of side reactions and many other problems

Method used

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  • Catalyst for preparing dinitrile compound from alicyclic hydrocarbon and synthetic method of dinitrile
  • Catalyst for preparing dinitrile compound from alicyclic hydrocarbon and synthetic method of dinitrile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] 48 g of vanadium pentoxide was added to 800 g of oxalic acid solution with a mass concentration of 22.5 wt %, stirred for 2 hours, and dissolved to obtain a mixed solution. Add successively 35g titanium dioxide, 12.8g ammonium orthomolybdate ((NH 4 ) 2 MoO 4 ), 56g concentration is the phosphoric acid solution of 85.54wt%, stirs 2 hours, then slowly adds the nickel chloride NiCl that technical grade contains water of crystallization 2 ·6H 2 O 9.80g, 3.2g sodium chloride, stirred for 1 hour, then slowly added SnCl 2 2H 2 O 7.60 g and 10.5 g cesium sulfate, stirred for 1 hour, and then added 980 g of silica sol (Shandong Haoyao, silica hydrosol s40 type) with a mass concentration of 40 wt%, to obtain a catalyst slurry. The catalyst slurry was heated to evaporate water until the solid content of the system was 45%. The slurry is spray-dried in a spray dryer to obtain a catalyst precursor. The molar ratio of each metal element added is V:Ti:P:Mo:Cs:Na:Ni:Sn=1:0.83:0....

Embodiment 2

[0098] 48 g of vanadium pentoxide was added to 800 g of oxalic acid solution with a mass concentration of 22.5 wt %, stirred for 2 hours, and dissolved to obtain a mixed solution. Add 30g titanium dioxide, 10.3g ammonium orthomolybdate ((NH 4 ) 2 MoO 4 ), 68.3g concentration is the phosphoric acid solution of 85.54wt%, stirs 2 hours, then slowly adds the nickel chloride NiCl that technical grade contains water of crystallization 2 ·6H 2 O 4.80g, stirred for 1 hour, then slowly added SnCl 2 2H 2 O 7.60g and 15.3g of cesium sulfate were stirred for 1 hour, and then 980g of silica sol with a mass concentration of 40wt% was added to obtain a catalyst slurry. The catalyst slurry was heated to evaporate water until the solid content of the system was 45%. The slurry is spray-dried in a spray dryer to obtain a catalyst precursor. The molar ratio of the added metal elements is V:Ti:P:Mo:Cs:Ni:Sn=1:0.71:1.12:0.10:0.16:0.04:0.06.

[0099] Place the catalyst precursor in a muffle...

Embodiment 3

[0103] 48 g of vanadium pentoxide was added to 800 g of oxalic acid solution with a mass concentration of 22.5 wt %, stirred for 2 hours, and dissolved to obtain a mixed solution. Add 42.2g titanium dioxide, 5.2g ammonium orthomolybdate ((NH 4 ) 2 MoO 4 ), 67.7g of phosphoric acid solution with a concentration of 85.54wt%, stirred for 2 hours, then slowly added 4.3g of potassium chloride, stirred for 1 hour, then slowly added SnCl 2 2H 2 O 7.60g and 7.6g cesium sulfate, stirred for 1 hour, then added 980g of silica sol with a mass concentration of 40wt%, to obtain a catalyst slurry. The catalyst slurry was heated to evaporate water until the solid content of the system was 45%. The slurry is spray-dried in a spray dryer to obtain a catalyst precursor. The molar ratio of the added metal elements is V:Ti:P:Mo:Cs:K:Sn=1:1.00:1.12:0.05:0.08:0.11:0.06.

[0104] Place the catalyst precursor in a muffle furnace at 300°C for 3 hours and then gradually raise the temperature to 65...

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Abstract

The invention provides a catalyst for preparing a dinitrile compound from alicyclic hydrocarbon, which can realize ring opening of alicyclic alcohol, alicyclic ketone, cycloolefin and cycloalkane and complete ammoxidation reaction at the same time to obtain the dinitrile compound. The catalyst is high in reaction activity and good in selectivity, the high-quality dinitrile compound can be prepared, the technological process is easy to control, and industrial production is facilitated.

Description

technical field [0001] The invention belongs to the technical field of catalytic organic synthesis, and in particular relates to a catalyst for preparing dinitriles from alicyclic hydrocarbons and a method for catalytically synthesizing dinitriles. Background technique [0002] With the development and application of chemical products, aliphatic dibasic nitriles, as important chemical raw materials, are gradually increasing in demand. Among them, adiponitrile can be used to produce hexamethylenediamine, a monomer of nylon 66, and can be hydrolyzed to produce adipic acid, etc., which has multiple uses. Glutaronitrile is the raw material for preparing chemical products such as diethyl glutarate, glutaric acid and 1,5-diaminopentane. [0003] At present, the methods for preparing aliphatic dibasic nitriles mainly include diacids to prepare dinitriles, such as preparing adiponitrile from adipic acid, preparing glutaronitrile from glutaric acid, etc., and reacting chlorinated hy...

Claims

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Application Information

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IPC IPC(8): B01J27/199C07C253/24C07C253/26C07C255/04
CPCB01J27/199B01J23/002C07C253/24C07C253/26B01J2523/00C07C255/04B01J2523/12B01J2523/15B01J2523/43B01J2523/47B01J2523/51B01J2523/55B01J2523/68B01J2523/847B01J2523/13
Inventor 权于王贤丰高振聪张亮
Owner ANSHAN HIFICHEM CO LTD
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