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Method for preparing catalyst composition

A technology of catalysts and compositions, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve problems such as coordination and coordination of different metals not involved, high metal content of catalysts, loss of activity, etc.

Active Publication Date: 2008-08-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

Due to the high metal content of the catalyst prepared by this method, there is often a lack of sufficient interaction between the metal and alumina, resulting in poor catalyst strength
The active component part is composed of a large number of metals, and some internal metal components cannot be fully utilized during the formation of Ni-Mo or Ni-Mo-W powder, resulting in loss of activity, and this problem cannot be solved by simple bonding
CN1342102A discloses a mixed metal catalyst, which is obtained by co-precipitating three active metals. Its main disadvantage is that no coordination effect between different active metals has been found
In the prior art, only the types and contents of metals are emphasized, and how to improve the coordination and cooperation between different metals is not involved

Method used

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preparation example Construction

[0019] The invention provides the preparation method of catalyst, a kind of concrete process step is as follows:

[0020] 1. Ni x W y o z Complex oxide precursors and MoO 3 Preparation of the mixture

[0021] Add the salt mixture containing active metal Ni and W components into the reaction tank according to the ratio of catalyst components. Nickel-containing salts can be nickel sulfate, nickel nitrate, nickel chloride, basic nickel carbonate and the like. The tungsten-containing salt can be sodium tungstate, ammonium metatungstate, tungstic acid, etc. After mixing evenly, add concentrated ammonia water to the above mixture under stirring until dark blue material A is formed, and the pH value of material A is 10.0-13.0. The weight concentration of ammonia water is generally 15% to 35%. Heat the solution A to 80-100°C while stirring, distill ammonia and produce precipitation until the pH value of the slurry is 7.5-9.0. The precipitate in the slurry is Ni x W y o z Pr...

Embodiment 1

[0034] Add 1000mL of water into the reaction tank, then add 40g of nickel chloride to dissolve, then add 32g of ammonium metatungstate to dissolve, then add 25% ammonia water until a dark blue solution A is formed, the pH value of the solution is 11.0, and the temperature of solution A is raised to 80°C , distill ammonia for 2 hours, the pH value is 8.0, then filter, add 600ml of clean water, 28g of molybdenum trioxide and 34g of aluminum hydroxide to the filter cake, beat and stir evenly, filter, dry the filter cake at 80°C for 5 hours, and then extrude , washed three times with clean water, dried the wet strip at 120°C for 5 hours, and calcined at 500°C for 4 hours to obtain the final catalyst A. The composition and main properties are shown in Table 2.

Embodiment 2

[0036] According to the method of Example 1, according to the component content ratio of catalyst B in Table 2, add aluminum chloride, nickel chloride, sodium tungstate and zirconium oxychloride to the reaction tank, and then add 20% ammonia water to form dark blue solution, the pH value is 12.0, warming up to 95°C, distilling ammonia for 3 hours until the pH value is 7.5, then filtering, washing the filter cake twice with 500mL clean water, adding clean water and molybdenum trioxide, beating and stirring evenly, filtering, filtering The cake was dried at 70°C for 7 hours, then extruded into strips, washed twice with clean water, dried at 100°C for 8 hours, and calcined at 550°C for 3 hours to obtain the final catalyst B. The composition and main properties are shown in Table 2.

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Abstract

The invention relates to a method for preparing catalyst compound. Wherein, it uses deposition method to generate the forward body of NixWyOz compound oxide; then mixing and beating with MoO3, filtering, shaping and activating to obtain the final catalyst. The deposition process comprises that adding the salt mixture with active metals Ni and W into the reaction pot, adding dense ammonia to adjust the pH value to 10.0-13.0; heating to vaporize the ammonia, until the pH value is 7.5-9.0, and generating deposit, as the forward body. The invention can improve the catalyst property, with high metal content.

Description

technical field [0001] The present invention relates to a preparation method of a catalyst composition, in particular to a preparation method of a bulk catalyst composition, in particular to a preparation method of a bulk catalyst for hydroconversion or hydrotreating of hydrocarbon oil, in particular The invention relates to a method for preparing a bulk catalyst for deep desulfurization, denitrogenation and other impurity removal processes of hydrocarbon oil. Background technique [0002] Fuel contains S, N and other impurities and aromatics (especially polycyclic aromatics), which will form harmful substances such as SOx, NOx and solid particles during use, which not only endanger human health, but also form acid rain in the air, causing greater pollution and destruction. In the past ten years, many countries including North America, Europe, and Japan have proposed the concept of ultra-low sulfur diesel (ULSD) and continuously formulated new fuel specifications to limit t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/84
Inventor 徐学军刘东香王继锋冯小萍王海涛
Owner CHINA PETROLEUM & CHEM CORP
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