Composite catalyst, and preparation method of nonyldiphenylamine

A composite catalyst, nonyldiphenylamine technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, preparation of amino compounds from amines, etc., can solve the problems affecting the appearance and performance of nonyldiphenylamine, Diphenylamine residue and other problems, to achieve the effect of improved performance, high base value and high viscosity

Active Publication Date: 2017-07-14
XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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  • Abstract
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Problems solved by technology

[0004] CN104628580A discloses a preparation method of nonyl diphenylamine in which mixed olefins participate; diphenylamine is mixed with carbon 9 olefins, and activated montmorillonite and active Al are added 2 o 3 The mixed catalyst is subjected to alkylation reaction at 75°C to 170°C; add mixed olefin and polymerization inhibitor, filter the product and distill under reduced pressure, collect the solid catalyst for recycling, collect and recover the olefin to continue to participate in the reaction, and the obtained product is nonyl Diphenylamine; the product prepared by this method has a darker color and more diphenylamine residues, which affects the appearance and performance of nonyldiphenylamine

Method used

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  • Composite catalyst, and preparation method of nonyldiphenylamine

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preparation example Construction

[0029] In the present invention, the preparation method of described composite catalyst preferably follows the steps:

[0030] The activated clay, p-toluenesulfonic acid and activated zinc oxide are evenly mixed to obtain a composite catalyst.

[0031] The preparation method of the composite catalyst is simple, and has high activity in catalyzing the alkylation reaction of diphenylamine and nonene; the aftertreatment is not complicated, and there is no generation of three wastes; and the composite catalyst can be recycled.

[0032] The invention provides a kind of preparation method of nonyl diphenylamine, comprises the following steps:

[0033] Under the action of a catalyst, diphenylamine and nonene are alkylated to obtain nonyldiphenylamine;

[0034] The catalyst is the composite catalyst described in the above technical scheme.

[0035] In the present invention, the alkylation reaction of diphenylamine and nonene specifically preferably includes:

[0036] Mix diphenylam...

Embodiment 1

[0050] Add 200g of activated clay, 5g of p-toluenesulfonic acid and 6g of active zinc oxide into the mixing device for compounding, start the mixing device for half an hour, and obtain a uniformly mixed activated clay composite catalyst for subsequent use.

[0051] Add 50g diphenylamine, 12.5g activated clay composite catalyst, 60ppm polymerization inhibitor hydroquinone in the stainless steel reaction kettle, feed nitrogen into the reaction kettle, fully replace the air in the kettle, and start heating. At the same time, the vacuum system is turned on, and the vacuum degree in the kettle is controlled at 0.08MPa to 0.095MPa; when the temperature reaches about 70°C, the stirring is started, and the stirring rate is 300 rpm, and the moisture in the reaction system is removed under vacuum conditions. Gradually raise the temperature to 100°C and keep it warm for half an hour, then stop the vacuum system and replace it with nitrogen to normal pressure; add 152.5g nonene, and start ...

Embodiment 2

[0057] Add 200g of activated clay, 1g of p-toluenesulfonic acid and 3g of active zinc oxide into the mixing device for compounding, start the mixing device for half an hour, and obtain a uniformly mixed activated clay composite catalyst, which is ready for use.

[0058] Add 50g diphenylamine, 16g activated clay composite catalyst, 65ppm polymerization inhibitor hydroquinone in the stainless steel reaction kettle, feed nitrogen into the reaction kettle, fully replace the air in the kettle, and start heating. At the same time, the vacuum system is turned on, and the vacuum degree in the kettle is controlled at 0.08MPa~0.095MPa. When the temperature reaches about 70°C, the stirring is started at a stirring rate of 300 rpm, and the moisture in the reaction system is removed under vacuum conditions. Gradually raise the temperature to 100°C and keep it warm for half an hour, then stop the vacuum system, and replace it with nitrogen to normal pressure; first add 55g of nonene, gradua...

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Abstract

The invention provides a composite catalyst and a preparation method of nonyldiphenylamine. The composite catalyst comprises active clay, p-toluenesulfonic acid and active zinc oxide according to a mass ratio of 100:(0.1-5):(0.1-5). The composite catalyst can catalyze the alkylation reaction of diphenylamine and nonene, so the obtained nonyldiphenylamine product has light color, high viscosity and high base value, the residual content of diphenylamine in the product is low, and the performances of the product are greatly improved.

Description

technical field [0001] The invention relates to the technical field of lubricating oil additives, in particular to a composite catalyst and a preparation method of nonyldiphenylamine. Background technique [0002] Antioxidants are compounds that prevent or delay the oxidation of organic materials. All organic materials have the property of reacting with oxygen in the air, and the substances will change their original properties after the oxidation reaction. Although there are many methods to prevent the oxidation of organic matter in industry, adding antioxidants is still the easiest and most effective method. During use, lubricating oil will inevitably come into contact with oxygen to undergo chemical action, oxidize and deteriorate, generate acidic substances, and cause equipment corrosion. [0003] Amine antioxidants are one of the earliest antioxidants, and they are highly efficient high-temperature antioxidants. RF5067 is a liquid amine antioxidant whose main componen...

Claims

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Application Information

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IPC IPC(8): B01J31/26C07C209/68C07C211/55
CPCB01J31/26B01J2231/40C07C209/68C07C211/55
Inventor 郭春萱王学义万荫松范金凤乔庆文
Owner XINXIANG RICHFUL LUBE ADDITIVE CO LTD
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