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Hydrogenation catalyst and preparation method thereof

A technology of hydrogenation catalyst and oxide film, which is applied in the direction of catalyst activation/preparation, catalyst carrier, chemical instruments and methods, etc., can solve the problems of uneven distribution of active components, weak loading, complicated preparation methods, etc., and avoid side effects Reaction, improved activity and stability, simple preparation process

Active Publication Date: 2007-10-31
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems of uneven distribution of active components, weak loading and complicated preparation methods in the existing catalysts with porous metal as the carrier, the present invention proposes to use the electroplating method to load the active components on the porous metal carrier prepared with an oxide film Catalyst and preparation method thereof, the prepared catalyst has the advantages of high dispersion and active components not easy to fall off, and has good catalytic performance, the preparation method is simple, easy to realize

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Preparation of hydrogenation catalyst:

[0044] (1) A porous stainless steel plate (provided by Antai Technology Co., Ltd.) is selected as the catalyst carrier, which has a uniform microporous structure, is in the shape of a sheet, has a thickness of 2mm, and a specific surface area of ​​5.5m 2 / g, the volume average pore diameter is 15 μm, and the porosity is 65%. The porous stainless steel plate can also be processed into the desired shape according to the needs of the experiment and then electroplated to load the active components.

[0045] (2) Immerse the porous stainless steel plate in a NaOH solution with a concentration of 25% by mass, heat it to boiling for 30 minutes, take it out, wash it with deionized water for 3 times, and dry it.

[0046] (3) Immerse the porous metal in an aqueous solution of 1M / L potassium permanganate and treat it at 90°C for 20 minutes, then take it out, wash it with deionized water, and dry it;

[0047] (4) The catalytically active co...

Embodiment 2

[0056] Preparation of hydrogenation catalyst:

[0057] The porous stainless steel plate in Example 1 was used as a carrier, heated to boiling for 30 minutes in a NaOH solution with a percentage concentration of 25%, then taken out, washed with deionized water for 3 times, and dried. The porous metal is immersed in 1.0M / L potassium permanganate aqueous solution and treated at 90°C for 30 minutes, then taken out, washed with deionized water, and dried.

[0058] The catalytically active component is Pd, with Pd(CH 3 COO) 2 It is the main component of the electroplating solution, the porous stainless steel plate is used as the cathode, and the platinum sheet is used as the anode. Electroplating is performed for 30 minutes under the conditions of electroplating voltage 3.5V, electroplating current 25mA, and electroplating temperature 30°C. After electroplating, the carrier is taken out, washed with deionized water, and dried to obtain a hydrogenation catalyst. The composition of...

Embodiment 3

[0066] A porous stainless steel plate (provided by Antai Technology Co., Ltd.) was selected as the carrier with a thickness of 2mm and a specific surface area of ​​100m 2 / g, the volume average pore diameter is 5 μm, and the porosity is 85%.

[0067] Dip the porous stainless steel plate in a NaOH solution with a concentration of 25% by mass, heat it to boiling for 30 minutes, take it out, wash it with deionized water for 3 times, and dry it. Immerse the porous metal in 1.5M / L potassium permanganate aqueous solution and treat it at 90°C for 30 minutes, then take it out, wash it with deionized water, and dry it.

[0068] The catalytically active component is Pd, with Pd(CH 3 COO) 2 It is the main component of the electroplating solution, the porous stainless steel plate is used as the cathode, and the platinum sheet is used as the anode. It is electroplated for 50 minutes under the conditions of electroplating voltage 3.0V, electroplating current 25mA, and electroplating tempe...

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Abstract

The invention relates to the selection of new hydrotreating catalyst, in order to solve existing porous metal carrier catalyst uneven bearing and looseness issue, putting forward a plating method to make the catalyst with carrier activenss on the porous metal carrier. The catalyst is even in active element distribution, fast in bearing, fine in heat conductivity and catalyst feature, simple in making, easy for realization, applicable for distillate hydrogenation, furfuraldehyde, alkyne and dienerite selective hydrogenation and all kinds of alike reations.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method thereof, more specifically, the invention relates to a hydrogenation catalyst with porous metal as a carrier and a preparation method thereof. Background technique [0002] Most hydrogenation catalysts use metal oxides as carriers. Oxide carriers have problems such as low mechanical strength and poor thermal conductivity. The reaction heat generated during the reaction cannot be removed quickly, causing side reactions. [0003] CN 1053636 discloses a distillate oil hydrogenation catalyst composed of an amorphous silica-alumina carrier and a platinum-palladium bimetallic active component, wherein the carrier used is partially dealuminated without high-temperature roasting treatment. The catalyst provided by the invention has excellent sulfur resistance performance and aromatic hydrocarbon saturation performance, and its preparation method has the characteristics of simplified pro...

Claims

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Application Information

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IPC IPC(8): B01J32/00B01J23/38B01J23/74B01J35/10B01J37/00C07B35/02
Inventor 刘智信李东风程建民廖丽华侯经纬王婧
Owner CHINA PETROLEUM & CHEM CORP