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Petroleum resin hydrogenation catalyst and preparation method thereof

A technology of hydrogenation catalyst and petroleum resin, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., which can solve the problem of insufficient loading depth and dispersion of precious metals and poor product color. Meet the needs of reality, can not really meet the actual needs and other problems, to achieve the effect of improving anti-coking ability and stability, controllable impregnation depth, preventing migration and growth

Active Publication Date: 2013-11-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Specifically, for example, Chinese patent CN1962706 (a preparation method of hydrogenated C5 / C9 copolymerized petroleum resin) has problems in the prior art that the catalyst life is short, and the color of the product cannot meet the needs of reality.
Supported palladium series and palladium-platinum series catalysts solve the problem of deep color of hydrogenation resin products, but the disadvantage is that the depth and dispersion of precious metal loading are not enough. The catalyst is prone to carbon deposition and deactivation, and the service life cannot meet the actual industrial needs
Catalysts of these prior art exist and can't actually satisfy actual needs, there is room for further improvement

Method used

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preparation example Construction

[0034] According to the present invention, the preparation method of above-mentioned petroleum resin hydrogenation catalyst is provided, it is characterized in that comprising the following steps:

[0035] (1) Al 2 o 3 The carrier is impregnated with a potassium salt solution, dried at 100°C and calcined at 300-600°C for 4 hours to obtain K 2 O / Al 2 o 3 carrier;

[0036] (2) adding nanoscale titanium hydroxide and palladium-containing compounds into deionized water, adding nitric acid dropwise during stirring to adjust the pH value to 0.5 to 5, to obtain a transparent sol;

[0037] (3) K obtained in step (1) 2 O / Al 2 o 3 The sol in the carrier impregnation step (2) is 0.1~1h, after the impregnation, it is dried at 100°C, calcined at 200~400°C for 4h, and reduced with hydrogen at 50~200°C for 2h to obtain Pd-TiO 2 -K 2 O / Al 2 o 3 catalyst.

[0038] According to the present invention, the soaking time is subject to obtaining a uniform soaked product, for example, the...

Embodiment 1

[0042] (1) Set the specific surface area to 100m 2 / g, the pore volume is 0.5cm 3 / g, spherical Al with an average pore diameter of 50nm 2 o 3 Carrier impregnated with potassium nitrate solution, dried at 100°C for 10h and calcined at 400°C for 4h to obtain K 2 O / Al 2 o 3 carrier;

[0043] (2) adding nanoscale titanium hydroxide and palladium nitrate to deionized water, adding nitric acid dropwise during stirring to adjust the pH value to 3, to obtain a transparent sol;

[0044] (3) K obtained in step (1) 2 O / Al 2 o 3 The sol in the carrier impregnation step (2) is 0.5h. After impregnation, it is dried at 100°C for 10h, calcined at 300°C for 4h, and reduced with hydrogen at 100°C for 2h to obtain Pd-TiO 2 -K 2 O / Al 2 o 3 catalyst.

[0045] The catalyst that present embodiment obtains has the following properties: the mass content of each component in the catalyst is: Pd is 2%, K 2 O is 1%, TiO 2 5% and the rest is Al 2 o 3 . The loading depth of the noble met...

Embodiment 2

[0047] (1) Set the specific surface area to 50m 2 / g, the pore volume is 0.3cm 3 / g, spherical Al with an average pore diameter of 100nm 2 o 3 The carrier is impregnated with potassium hydroxide solution, dried at 100°C for 10h and calcined at 300°C for 4h to obtain K 2 O / Al 2 o 3 carrier;

[0048] (2) adding nanoscale titanium hydroxide and palladium hydroxide to deionized water, adding nitric acid dropwise during stirring to adjust the pH value to 0.5, to obtain a transparent sol;

[0049] (3) K obtained in step (1) 2 O / Al 2 o 3 Carrier impregnation step (2) of the sol for 1h, after impregnation, drying at 100°C for 10h, calcination at 200°C for 4h, hydrogen reduction at 50°C for 2h to obtain Pd-TiO 2 -K 2 O / Al 2 o 3 catalyst.

[0050] The catalyst obtained in this embodiment has the following properties: the mass content of each component in the catalyst is: Pd is 0.5%, K 2 O is 0.1%, TiO 2 1%, the rest is Al 2 o 3 . The loading depth of the noble metal Pd...

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Abstract

The invention provides a petroleum resin hydrogenation catalyst and a preparation method thereof. The petroleum resin hydrogenation catalyst comprises an Al2O3 carrier, a precious metal Pd loaded on the Al2O3 and an assistant element oxide. The catalyst provided by the invention has high activity, and the steeping depth of active metals in the catalyst is controllable; and the preparation method of the catalyst is simple and suitable for industrial production.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, in particular to a C9 petroleum resin hydrogenation catalyst and a preparation method thereof. Background technique [0002] C9 petroleum resin is a thermoplastic resin with an amorphous structure obtained by polymerization of the C9 fraction produced by the cracking of ethylene. The finished product is yellow to light brown. solvents such as toluene. The polymer chain of C9 petroleum resin contains relatively high unsaturated double bonds, so there are disadvantages such as deep color, low thermal oxidation stability, and poor adhesion. Usually, hydrogenation is required to obtain light white or nearly colorless hydrogenated resin. . [0003] C9 petroleum resin molecules have a chain and ring structure, large steric hindrance, high activation energy for hydrogenation reaction of unsaturated bonds, and harsh hydrogenation conditions. The hydrogenation reaction needs t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/58B01J37/02C08F240/00C08F8/04
Inventor 王继元堵文斌许建文卞伯同陈韶辉杨爱武柏基业朱庆奋庞焱
Owner CHINA PETROLEUM & CHEM CORP
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