Preparation method of nickel-based hydrogenation catalyst

A hydrogenation catalyst and nickel-based technology, applied in the field of preparation of nickel-based hydrogenation catalysts, can solve the problems of high precipitation temperature, particularly demanding sulfur content, affecting the activity level of nickel, etc., and achieve the effect of uniform precipitation environment

Active Publication Date: 2012-05-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although noble metal catalysts have strong olefin and aromatic hydrocarbon saturation capabilities and achieve ideal results in the hydrogenation and decolorization of petroleum resins, noble metal catalysts have the following disadvantages: first, the preparation cost of noble metal catalysts is much higher than that of non-precious metal catalysts; secondly, During the use of noble metal catalysts, the requirements for the content of impurities in the raw materials, especially the requirements for the content of sulfur in the raw materials are particularly stringent
The disadvantages of the preparation of the catalyst are: firstly, during the precipitation process, the acidic nickel salt solution is added to the alkaline precipitant sol

Method used

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  • Preparation method of nickel-based hydrogenation catalyst
  • Preparation method of nickel-based hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 279.5g of nickel chloride hexahydrate and 11.0g of lanthanum nitrate hexahydrate are formulated into a mixed solution so that the concentration of the two salts in this solution is 0.6mol / L. After the two salts are all dissolved, add pseudoboehmite (containing Al 2 o 3 70% (mass fraction)) 92.9g, make slurry stand-by; Dissolve 318g sodium carbonate in water, be mixed with the precipitating agent solution that concentration is 1.0mol / L, stand-by; Add 1000mL clean water in 8000mL reactor , heat and turn on the stirring equipment. When the temperature rises to 80°C, keep the temperature in the kettle, start to add the mixed slurry and alkaline precipitant solution in parallel, and control the flow rate of the mixed slurry to 40mL / min and the flow rate of the alkaline precipitant solution to 55mL / min, keep the pH value of the slurry in the reactor at 7.2, when all the acidic mixed slurry is added, use the alkaline precipitant solution to adjust the pH value of the slurry ...

Embodiment 2

[0031] The preparation process is the same as in Example 1, except that the concentration of the two salts in the solution is changed to 0.3mol / L, the concentration of the precipitant solution is changed to 1.5mol / L, and the prepared nickel-based hydrogenation catalyst is C 2 , and the analysis results are shown in Table 1.

Embodiment 3

[0033] The preparation process is the same as in Example 1, and 1500mL of clean water is pre-added in the 8000mL reactor, and the prepared nickel-based hydrogenation catalyst C 3 , and the analysis results are shown in Table 1.

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Abstract

The invention discloses a preparation method of a nickel-based hydrogenation catalyst. The preparation method comprises the following steps that carrier alumina and /or silicon oxide, an active metal ingredient and an auxiliary agent ingredient are prepared into slurry; the slurry and a precipitator are added into a reactor in a parallel flow way and are prepared into a catalyst precursor; and the catalyst precursor, a peptizing agent and water are mixed, kneaded, molded, dried and calcined to form the nickel-based hydrogenation catalyst. Through the preparation method, the active metal ingredient can uniformly precipitate on the carrier so that high-uniformity uniformity of the active metal ingredient on the carrier is guaranteed. Through the parallel flow way for precipitation, a uniform precipitation environment in precipitation is obtained so precipitates having the same shape and size are obtained. The nickel-based hydrogenation catalyst obtained by the preparation method can be utilized for hydrogenation decoloration of C5 petroleum resin, C9 petroleum resin and C5-C9 mixed petroleum resin.

Description

technical field [0001] The present invention relates to a kind of preparation method of nickel-based hydrogenation catalyst, particularly for C 5 Petroleum resin, C 9 Petroleum resin and C 5 、C 9 Blended petroleum resin hydrodecolorization catalyst. Background technique [0002] Petroleum resin is a functional resin with a relatively low molecular weight, which has the characteristics of thickening, cohesiveness and compatibility with other resins. Widely used in coatings, adhesives, printing inks, rubber additives, paper additives and other fields. Petroleum resin can be divided into C and C according to different raw materials and properties. 5 Petroleum resin, C 9 Petroleum resin, C 5 -C 9 Copolymerized petroleum tree, etc. At present, the main source of preparing petroleum resin is the by-product of petroleum cracking ethylene. Due to the difference of cracking raw material and cracking depth, the output of this by-product is generally 10% to 20% of ethylene pro...

Claims

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Application Information

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IPC IPC(8): B01J23/76B01J23/755B01J23/83B01J23/80C08F240/00C08F8/04
Inventor 王永林付秋红杨刚陈金汤
Owner CHINA PETROLEUM & CHEM CORP
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