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Cyclohexanecarboxylic acid ester preparation method

A technology of cyclohexane carboxylate and cyclohexane, which is applied in the direction of carboxylate preparation, organic compound preparation, chemical instruments and methods, etc., which can solve the complex catalyst preparation process, easy loss of active components, and short catalyst life and other problems, to achieve the effect of excellent catalytic activity, less waste, and energy saving

Active Publication Date: 2017-04-19
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By summarizing the above methods, it is not difficult to find that the hydrogenation methods reported so far all use traditional transition metal supported catalysts. The catalyst preparation process is complicated, the amount of waste water is large, the active components are easy to lose, and the life of the catalyst is short.

Method used

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  • Cyclohexanecarboxylic acid ester preparation method
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  • Cyclohexanecarboxylic acid ester preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Weigh 150g metal nickel, 120g metal cobalt, 60g metal manganese, 280g metal aluminum and 50g silicon simple substance, add these metals in the furnace cavity of intermediate frequency induction furnace (purchased from Suzhou Hengfu Vacuum Technology Co., Ltd.), heat and melt at 1600 ° C, separate The batches were poured into a 10cm×10cm mold, and smelted to form a Ni-Co-Mn-Al-Si alloy sheet with a thickness of about 2mm.

[0043] Formulated with 1wt% NaNO 3 , 2000g glycerol solution of 2.8v% distilled water is used as electrolyte, such as figure 1 The shown device; the Ni-Co-Mn-Al-Si alloy sheet with a thickness of 2mm and a size of 10cm×10cm is used as the anode 3, high-purity graphite is used as the cathode 2, and the area ratio of the anode and cathode is 1:1.2. The distance is set to 4.5cm, the voltage of DC stabilized power supply 1 is 25V, and the additives (NH 4 ) 2 HPO 4 Add it into the electrolyte, the molar ratio of the total amount to the distilled water ...

Embodiment 2

[0045] Weigh 110g metal nickel, 80g metal cobalt, 50g metal manganese, 220g metal aluminum, 10g metal copper and 50g silicon simple substance, these metals are added in the furnace cavity of intermediate frequency induction furnace (purchased in Suzhou Hengfu Vacuum Technology Co., Ltd.), Heated and melted at 1800°C, poured into a 10cm×10cm mold in batches, and smelted to form a Ni-Co-Mn-Cu-Al-Si alloy sheet with a thickness of about 2mm.

[0046] Formulated with 1.5wt% NH 4 NO 3 , 2000g butanediol solution of 2v% distilled water is used as electrolyte, such as figure 1 The device shown is a Ni-Co-Mn-Cu-Al-Si alloy sheet with a thickness of 2mm and a size of 10cm×10cm as the anode 3, metal platinum as the cathode 2, and the area ratio of the anode to the cathode is 1:1.5. The distance between them is set to 4.5cm, the voltage of DC stabilized power supply 1 is 35V, and the additive Na 2 HPO 4 Add it into the electrolyte, the molar ratio of the total amount to the distilled...

Embodiment 3

[0048] Weigh 150g metallic nickel, 125 gram metallic cobalt, 50g metallic manganese, 125g metallic aluminum, 10 gram metallic iron and 40g silicon simple substance, these metals are added in the furnace cavity of intermediate frequency induction furnace (purchased in Suzhou Hengfu Vacuum Technology Co., Ltd.), Heat and melt at 1700°C, pour into a 10cm×10cm mold in batches, and melt to make a Ni-Co-Mn-Fe-Al-Si alloy sheet with a thickness of about 2mm.

[0049] Formulated with 2wt% KNO 3 , 1500g diethylene glycol solution of 2v% distilled water is used as the electrolyte, such as figure 1 The shown device; the thickness is 2mm, the size is 10cm×10cmNi-Co-Mn-Fe-Al-Si alloy sheet is used as anode 3, platinum is used as cathode 2, and the area ratio of anode and cathode is 1:1.4. The distance is set to 5cm, the voltage of the DC stabilized power supply 1 is 25V, and the additive NaH 2 PO 4 Add it into the electrolyte, the molar ratio of the total amount to the distilled water i...

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Abstract

The present invention relates to a cyclohexanecarboxylic acid ester preparation method, wherein the compound is obtained by carrying out selective hydrogenation on a phthalic acid derivative, and the used hydrogenation catalyst is a Ni, Co, Mn and Al2O3-SiO2 composite nano-tube array film hydrogenation catalyst, wherein the catalyst has high activity and high selectivity in the cyclohexanecarboxylic acid ester preparation reaction through the selective hydrogenation of the phthalic acid derivative, and the hydrogenation product is a class of the wide-application plasticizers.

Description

technical field [0001] The invention relates to a method for preparing cyclohexane carboxylate through selective hydrogenation of phthalic acid derivatives. [0002] technical background [0003] Cyclohexane carboxylate, especially cyclohexane o-dicarboxylate is widely used in industry, and can be used as lubricant, metal processing aid and PVC environmental protection plasticizer, especially in the field of plasticizer. Plasticizers are mostly phthalate plasticizers, such as DOP, DBP, etc., and animal experiments have confirmed that phthalate plasticizers have carcinogenic risks, and their use has been banned in Europe and the United States. Among the plasticizers replacing phthalates, cyclohexane carboxylate is a kind of recognized and favored product, and its application as a plasticizer has been reported in many patents, such as the cyclohexane carboxylate reported in patent DE-A2823165. Dimethyl hexanedicarboxylate and diethyl ester and diisooctyl ester, cyclohexane pol...

Claims

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Application Information

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IPC IPC(8): C07C67/303C07C69/75B01J23/889
CPCB01J23/002B01J23/889B01J2523/00C07C67/303C07C69/75B01J2523/847B01J2523/72B01J2523/845
Inventor 石森王磊宋伟锋董龙跃何岩袁帅吕艳红黎源蒋平平
Owner WANHUA CHEM GRP CO LTD
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