阅读说明：本技术 一种用于c9石油树脂加氢反应的催化剂及其制备方法 (Catalyst for hydrogenation reaction of C9 petroleum resin and preparation method thereof ) 是由 陈应峰 于 2019-09-12 设计创作，主要内容包括：本发明提供一种用于C9石油树脂加氢反应的催化剂及其制备方法,涉及催化技术领域,包括载体和活性组分,载体中碳化硅30-50份,TiO<Sub>2</Sub>30-50份,SiO 220-40份；扩孔剂0.2-0.8份；活性组分1-5份,石墨10-15份；包括如下步骤：a将碳化硅和TiO<Sub>2</Sub>进行热处理；b混合物与γ-氧化铝、硬脂酸铝、硝酸铝中的至少一种混合；c向混合物中加入扩孔剂；d得到催化剂载体；f将浸渍后的催化剂载体取出。本发明扩孔剂的加入对焙烧过程中二次孔的形成有利,为复合载体提供了更大孔径尺寸,能够提供更有利的加氢环境,活性组分的应用提高了高温加氢反应条件下贵金属元素微晶的抗烧结性,整个发明过程简单,得到的催化剂的寿命更长,催化效果更好,实用性高。(The invention provides a catalyst for hydrogenation reaction of C9 petroleum resin and a preparation method thereof, relating to the technical field of catalysis and comprising a carrier and an active component, wherein the carrier contains 30-50 parts of silicon carbide and TiO 2 30-50 parts of SiO 220-40 parts; 0.2-0.8 part of pore-expanding agent; 1-5 parts of active component and 10-15 parts of graphite; the method comprises the following steps: a mixing silicon carbide and TiO 2 Carrying out heat treatment; b, mixing the mixture with at least one of gamma-alumina, aluminum stearate and aluminum nitrate; c adding a pore-expanding agent to the mixture; d, obtaining a catalyst carrier; f taking out the impregnated catalyst carrier. The addition of the pore-expanding agent is beneficial to the formation of secondary pores in the roasting process, and provides a composite carrier with good performanceThe catalyst has the advantages of large aperture size, capability of providing a more favorable hydrogenation environment, improvement of sintering resistance of the precious metal element microcrystal under the high-temperature hydrogenation reaction condition due to the application of the active component, simple whole process, longer service life of the obtained catalyst, better catalytic effect and high practicability.)

1. A catalyst for hydrogenation reaction of C9 petroleum resin comprises a carrier and an active component, and is characterized in that: the feed is prepared from the following raw materials in parts by weight:

30-50 parts of silicon carbide and TiO in the carrier₂30 to 50 parts of SiO₂20-40 parts of a solvent; 0.2-0.8 part of pore-expanding agent; 1-5 parts of active component and 10-15 parts of graphite.

2. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the amount of the active component is 1-5% of the mass of the carrier.

3. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the active component is at least one of ruthenium, rubidium and yttrium.

4. The method for preparing the catalyst for the hydrogenation reaction of the C9 petroleum resin according to claim 1, wherein the catalyst comprises the following components: the method comprises the following steps:

a) mixing silicon carbide and TiO₂Heat treatment is carried out to obtain silicon carbide and TiO₂And a mixture of Si-O-Ti structures;

b) mixing the mixture after heat treatment with at least one of gamma-alumina, aluminum stearate and aluminum nitrate, adding a dispersing agent and water, and uniformly kneading;

c) adding a pore-expanding agent into the mixture obtained in the step b), and uniformly mixing to obtain a homogeneous system;

d) granulating the kneaded material, drying the obtained particles, adding graphite, uniformly mixing, and molding to obtain a catalyst carrier;

e) dipping the prepared catalyst carrier into a soluble compound solution containing an active component;

f) and taking out the impregnated catalyst carrier, drying and roasting to obtain the catalyst.

5. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the silicon carbide and TiO₂And (3) carrying out heat treatment for 2-3 h at 500-700 ℃ to obtain a mixture.

6. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the addition amount of the gamma-alumina, the aluminum stearate and the aluminum nitrate is 2-4% of the mass of the carrier.

7. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the pore-expanding agent is one or any combination of sodium stearate, methyl cellulose, polyethylene glycol and starch.

8. The method of claim 4, wherein: and f), drying at 80-150 ℃ for 8-20 hours, and roasting at 250-750 ℃ for 4-18 hours to obtain the catalyst.

Technical Field

The invention relates to the technical field of catalysis, in particular to a catalyst for hydrogenation reaction of C9 petroleum resin and a preparation method thereof.

Background

The C9 petroleum resin is widely used in adhesive tape, hot melt adhesive, road material, ink, rubber, etc. The C9 petroleum resin which is not hydrogenated and reduced has single variety, the product quality is not high, and the internal quality indexes such as oil solubility, compatibility, antioxidant stability and the like are not stable. The catalytic hydrogenation reduction treatment of the C9 petroleum resin can better solve the problems, improve the product performance, widen the application range of the product and increase the added value of the product. At present, the hydrogenation reduction of petroleum resin is mainly C5, the research on the catalytic hydrogenation reduction of petroleum resin in foreign countries has entered the level of industrial application, and the domestic industrial research has been reported rarely.

In the process of precipitation, an acidic nickel salt solution is added into an alkaline precipitator solution, so that the environment of the precipitation process in a reaction kettle is not uniform, precipitated crystal grains are different in size, the exertion of the activity level of nickel is influenced, the activity of the catalyst is reduced, and an alumina carrier is added after the precipitation is finished.

Disclosure of Invention

The invention aims to provide a catalyst for hydrogenation reaction of C9 petroleum resin and a preparation method thereof, so as to solve the technical problems.

In order to solve the technical problems, the invention adopts the following technical scheme:

a catalyst for hydrogenation reaction of C9 petroleum resin comprises a carrier and an active component, and is characterized in that: the feed is prepared from the following raw materials in parts by weight:

30-50 parts of silicon carbide and TiO in the carrier₂30 to 50 parts of SiO₂20-40 parts of a solvent; 0.2-0.8 part of pore-expanding agent; 1-5 parts of active component and 10-15 parts of graphite;

preferably, the amount of the active component is 1-5% of the mass of the carrier.

Preferably, the active component is at least one of ruthenium, rubidium and yttrium.

A preparation method of a catalyst for hydrogenation reaction of C9 petroleum resin comprises the following steps:

a) mixing silicon carbide and TiO₂Heat treatment is carried out to obtain silicon carbide and TiO₂And a mixture of Si-O-Ti structures;

b) mixing the mixture after heat treatment with at least one of gamma-alumina, aluminum stearate and aluminum nitrate, adding a dispersing agent and water, and uniformly kneading;

c) adding a pore-expanding agent into the mixture obtained in the step b), and uniformly mixing to obtain a homogeneous system;

d) granulating the kneaded material, drying the obtained particles, adding graphite, uniformly mixing, and molding to obtain a catalyst carrier;

e) dipping the prepared catalyst carrier into a soluble compound solution containing an active component;

f) and taking out the impregnated catalyst carrier, drying and roasting to obtain the catalyst.

5. The catalyst for hydrogenation reaction of C9 petroleum resin according to claim 1, wherein: the silicon carbide and TiO₂And (3) carrying out heat treatment for 2-3 h at 500-700 ℃ to obtain a mixture.

Preferably, the addition amount of the gamma-alumina, the aluminum stearate and the aluminum nitrate is 2 to 4 percent of the mass of the carrier.

Preferably, the pore-expanding agent is one or any combination of sodium stearate, methyl cellulose, polyethylene glycol and starch.

Preferably, in the step f), the catalyst is obtained after drying for 8-20 hours at 80-150 ℃ and then roasting for 4-18 hours at 250-750 ℃.

The invention has the beneficial effects that:

the addition of the pore-expanding agent is beneficial to the formation of secondary pores in the roasting process, a larger pore diameter size is provided for a composite carrier, a more beneficial hydrogenation environment can be provided, the anti-sintering property of precious metal element microcrystals under the condition of high-temperature hydrogenation reaction is improved by the application of the bi-component active component, and a longer service life of a hydrogenation catalyst is provided.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.