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Hydrocarbon material selective hydrogenation catalyst and preparation method thereof

A technology for selective hydrogenation and catalysts, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve problems that do not involve a small amount of oxides, and achieve improvement Effects of dispersion, enhanced synergy, and increased yield of monoolefins

Active Publication Date: 2017-07-11
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In summary, the catalysts disclosed in the existing patents and technologies do not involve the problem of containing a small amount of oxides

Method used

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  • Hydrocarbon material selective hydrogenation catalyst and preparation method thereof
  • Hydrocarbon material selective hydrogenation catalyst and preparation method thereof
  • Hydrocarbon material selective hydrogenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The catalyst carrier was prepared by adding 5% potassium carbonate and additives to aluminum hydroxide powder. Accurately weigh a certain weight carrier; accurately weigh PdCl 2 , tin protochloride, add water to dissolve respectively and adopt ultrasonic treatment homogeneous treatment, be mixed with a certain concentration solution; Get an appropriate amount of solution, make its consumption make the main and auxiliary active component content of the catalyst finally prepared meet the requirements of the prepared catalyst, The preparation of carrier and catalyst is as follows:

[0035] 1. Preparation of Vector

[0036] Add 5% potassium carbonate to aluminum hydroxide powder and mix it with additives to form a strip with a diameter of 2 mm, and roast it at the following temperature to obtain a carrier.

[0037] a. Dry at room temperature for 24 hours

[0038] b. Dry at 120°C for 4 hours

[0039] c. Raise the temperature from 120°C to 800°C and keep the temperature c...

Embodiment 2

[0046] The preparation process is the same as in Example 1. Load K, Pd, and Pb on the carrier in sequence.

[0047] 1. Preparation of Vector

[0048] Alumina powder is mixed with additives to form a spherical shape with a diameter of 2 mm, and fired at the temperature according to Example 1 to obtain the carrier 1.

[0049] Potassium nitrate is dissolved in water to make a certain concentration of potassium solution, which is fully dissolved in a transducer with an ultrasonic power of 60w. Take 100ml carrier and soak it in 60ml liquid. When the remaining liquid is completely transparent, take it out and drain it. Dry at constant temperature for 4 hours, and then bake at 600° C. for 4 hours to obtain carrier 2 .

[0050] 2. Catalyst Preparation

[0051] According to the catalyst Pd content requirement of 0.28%, prepare PdCl2 solution, put it in a transducer with an ultrasonic power of 300w to fully dissolve it, and immerse the carrier 2 prepared by the above method in the Pd...

Embodiment 3

[0053] The carrier preparation method is the same as in Example 2. Alumina powder and additives are mixed to form a strip with a diameter of 2 mm, and fired at the temperature of Example 1 to obtain a carrier 1; K, Pd, and Au are loaded on the carrier in sequence.

[0054] According to the catalyst Pd content requirement of 0.28%, prepare PdCl 2 Solution; the Au content is 0.03% according to the requirements of the catalyst to prepare a chloroauric acid solution, which is fully dissolved in a transducer with an ultrasonic power of 800w. Immerse the carrier 2 prepared by the above method in the Pd-containing solution at a constant temperature of 25°C, treat it with ultrasonic waves for 5 minutes, and stir evenly to make the main active components evenly distributed on the surface of the carrier, and filter the remaining liquid after 40 minutes. Dry at 120°C for 2 hours; then place it in a gold-containing solution for immersion, ultrasonic treatment for 6 minutes, filter off th...

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Abstract

The invention relates to a highly-unsaturated hydrocarbon selective hydrogenation catalyst and a preparation method thereof, and belongs to the field of preparation and application of catalysts. The catalyst comprises an inorganic carrier, main active components and auxiliary active components, wherein the inorganic carrier is a composite carrier of one or more of aluminium oxide, titanium oxide and silicon oxide, and is loaded with alkali metal elements; the main active components are VIII group metal elements; the auxiliary active components are IV A group metal elements and IB group metal elements. According to the invention, during the preparation of the catalyst, main active component solutions and auxiliary active component solutions are treated through ultrasonic, and the ultrasonic treatment is adopted during the impregnation process, so that the dispersion situation of the active components on the carrier is improved; the auxiliary active metal components are added into the catalyst, so that the synergistic effect among the active components is enhanced, and the hydrogenation activity is controlled to be within a proper range; compared with the conventional method for preparing the catalyst, the method has the advantage that the mono-olefin yield is increased by 1-3% under the premise that the fact that the residual amount of diolefin in C4-C6 materials is smaller than 100 ppm is guaranteed.

Description

technical field [0001] The invention relates to a highly unsaturated hydrocarbon selective hydrogenation catalyst and a preparation method thereof, belonging to the field of catalyst preparation and application. Background technique [0002] my country's oil and natural gas resources are in short supply, while coal resources are relatively abundant. Appropriately develop the coal-to-olefins industry, increase the added value of products, and use coal as raw material to produce low-carbon olefins through methanol or dimethyl ether has good development prospects and significance. In the process of methanol to olefins (MTO) and methanol to propylene (MTP), important olefins such as ethylene and propylene are obtained, and a certain amount of C4, C5 and C6 hydrocarbons are produced by-product. Compared with the naphtha cracking ethylene process, the content of butadiene in the mixed C4 material obtained by this process method is lower; compared with the catalytic cracking proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/62B01J23/66C07C11/08C07C11/10C07C7/167C07C7/163
Inventor 彭光辉董凌云付静
Owner CHINA PETROLEUM & CHEM CORP
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