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Hydrogenation catalyst used for petroleum resin and preparation method and application of catalyst

A technology of hydrogenation catalyst and petroleum resin, which is applied in the direction of catalyst activation/preparation, chemical instrument and method, metal/metal oxide/metal hydroxide catalyst, etc. Problems such as difficulty in hydrogen, poor hue of C5 petroleum resin, etc., achieve the effects of improving thermal stability and oxidation resistance, simplifying composition, and improving product appearance

Inactive Publication Date: 2019-04-19
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the unsaturated bonds contained in C5 petroleum resin, C5 petroleum resin has a series of problems such as poor hue, poor thermal stability and weak oxidation resistance.
In order to enhance the quality of C5 petroleum resin, catalytic hydrogenation technology is used to modify petroleum resin, but the hydrogenation of C5 petroleum resin is difficult, the hydrogenation activity of existing C5 petroleum resin hydrogenation catalyst is low, and the quality of C5 petroleum resin still needs to be improved

Method used

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  • Hydrogenation catalyst used for petroleum resin and preparation method and application of catalyst

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[0021] The invention provides a hydrogenation catalyst for petroleum resin and its preparation method and application. The hydrogenation catalyst is metal nickel loaded on an alumina-titania composite carrier, wherein the mass ratio of alumina to titania is 2-7:1-3, the mass percentage of nickel is 18wt%-25wt%.

[0022] The specific surface area of ​​the hydrogenation catalyst is 90m 2 / g~150m 2 / g, the pore volume is 0.4cm 3 / g~0.6cm 3 / g.

[0023] The nickel salt solution is completely dissolving one or more of nickel nitrate, nickel acetate, nickel sulfate and nickel chloride in a solvent, wherein the solvent is one or both of ethanol and deionized water.

[0024] There is also an additive in the nickel salt solution, and the additive is added after the nickel salt is completely dissolved; the mass percentage of the additive and the solvent in the nickel salt solution is 2wt% to 5wt%; the additive is citric acid and cetyl tris One or both of methyl ammonium bromide.

...

Embodiment 1

[0036] Preparation of alumina

[0037] Boehmite was calcined at 550°C for 4 hours to obtain alumina with a specific surface area of ​​251.27m 2 / g, the pore volume is 0.60cm 3 / g, the pore size is 8nm.

[0038] Preparation of alumina-titania composite support

[0039] Add 19.17g of tetrabutyl titanate into 76.68mL of absolute ethanol, stir to dissolve it, and obtain an ethanol solution of tetrabutyl titanate; then add 10.5g of alumina prepared above, and add dropwise the solution containing A mixed solution of water ethanol, glacial acetic acid and deionized water, wherein, in the ethanol solution of titanium salt, the titanium salt is tetrabutyl titanate, and the volume ratio of tetrabutyl titanate to ethanol is selected as 5:20; The volume ratio of ethanol, deionized water and glacial acetic acid in the mixed solution containing ethanol, glacial acetic acid and deionized water is 5:2:2; after that, soak for 6 hours at 40°C under continuous stirring to make tetrabutyl tita...

Embodiment 2

[0043] The difference from Example 1 is that the nickel salt solution also contains the additive citric acid, after the nickel salt is completely dissolved, the additive (citric acid) is added to dissolve, and finally the aluminum oxide-titania composite carrier is added for impregnation. The ratio of the mass of citric acid to the volume of deionized water is 3:80 (g / mL).

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Abstract

The invention belongs to the technical field of catalyst preparation, and particularly discloses a hydrogenation catalyst used for petroleum resin and a preparation method and application of the catalyst. The preparation method comprises the steps that a nickel salt solution and an aluminum oxide-titanium oxide composite support are mixed, so that nickel salt is immersed into the aluminum oxide-titanium oxide composite support, and an initial catalyst is obtained after drying and calcination; the initial catalyst is subjected to reduction to obtain the nickel-based hydrogenation catalyst. Thehydrogenation catalyst is used for catalytic hydrogenation reactions of the petroleum resin, the content of unsaturated bonds in the petroleum resin can be effectively reduced, and the hydrogenation catalyst is high in hydrogenation activity and hydrogenation rate. By means of the hydrogenation catalyst, the content of the unsaturated bonds in the petroleum resin can be effectively reduced, therefore, the chromaticity of the petroleum resin is effectively reduced, the heat stability and the oxidation resistance of the petroleum resin are improved, the quality of the petroleum resin is obviously improved, and the application range of the petroleum resin is easily expanded. No additives are needed, the compositions are very simple, the raw material cost is low, and the cost is easily reduced.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, and in particular relates to a hydrogenation catalyst used for petroleum resins and a preparation method and application thereof. Background technique [0002] C5 petroleum resin is a thermoplastic resin with a relative molecular weight between 300 and 3000 obtained by polymerization of ethylene cracking by-products. Because of its excellent pour point depressing and viscosity increasing properties, it can be added as a tackifier to road marking paints, adhesives, inks, and coatings. However, due to the unsaturated bonds contained in the C5 petroleum resin, a series of problems such as poor hue, poor thermal stability and weak oxidation resistance of the C5 petroleum resin are caused. In order to enhance the quality of C5 petroleum resin, catalytic hydrogenation technology is used to modify petroleum resin, but the hydrogenation of C5 petroleum resin is difficult, the hydrogenation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/10B01J37/02B01J37/18C08F8/04C08F240/00
CPCC08F8/04B01J23/755B01J37/0201B01J37/18B01J35/613B01J35/635B01J35/633B01J35/615C08F240/00
Inventor 李翠清崔新国张伟张晨王虹宋永吉
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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