Preparation of hydrogenation catalyst

A hydrogenation catalyst and catalyst technology, applied in the direction of organic chemical methods, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of difficult sulfidation of active components, loss of activity, and reduction of catalyst activity

Active Publication Date: 2009-05-27
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the active metals Co, Mo, Ni, W and Al during the preparation process 2 o 3 Can form a strong M-O-Al bond, the so-called "carrier effect", which causes

Method used

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  • Preparation of hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment one (comparison catalyst 1): take by weighing 6.9g ammonium paramolybdate and be dissolved in 10mL water, add 11.4g nickel nitrate again, make it dissolve, be made into impregnating solution for subsequent use; Prepare 20g alumina carrier (about 30ml of volume), Impregnation is carried out according to the method of equal volume impregnation. Dry the impregnated catalyst under an infrared lamp, dry it in an oven at 120 degrees for 24 hours, and then bake it at 500 degrees for 4 hours to obtain the comparative catalyst I, NiO and MoO 3 The loading amount is about 30wt%.

Embodiment 2

[0016] Example 2 (comparative catalyst II): Weigh 2.9g ammonium paramolybdate and 4.4g ammonium metatungstate and dissolve them in 10mL water, then add 9.5g nickel nitrate to dissolve them, and make an impregnation solution for subsequent use; prepare 20g alumina The carrier (about 30ml in volume) is impregnated according to the method of equal volume impregnation. Dry the impregnated catalyst under an infrared lamp, dry it in an oven at 120 degrees for 24 hours, and then bake it at 500 degrees for 4 hours to obtain the comparative catalyst II, NiO, MoO 3 and WO 3 The loading amount is about 30wt%.

Embodiment 3

[0017] Embodiment three: take by weighing 6.9g ammonium paramolybdate and dissolve in 10mL water, add 11.4g nickel nitrate again, make it dissolve, then add 2.0g urea, be made into impregnating solution standby; Prepare 20g alumina carrier (volume about 30ml) , impregnated according to the method of equal volume impregnation. Dry the impregnated catalyst under an infrared lamp, put it into a closed crystallization kettle, put it into an oven to react at 120 degrees for 24 hours, then open the lid of the crystallization kettle, and continue drying in the oven at 120 degrees for 20 hours. The catalyst that has reacted is calcined at 400 degrees under air atmosphere for 4 hours to obtain the catalyst of the present invention, NiO and MoO 3 The loading amount is about 30wt%.

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Abstract

The invention discloses a preparation method for a hydrogenation catalyst. The metal components of the catalyst comprise one or two metals from Co and Ni as well as one or two metals from Mo and W; carbamide or ammonia is used as a reaction addition agent; a method of reaction in-situ in the hole of a carrier is adopted to lead the metal active components to generate nickel molybdate (cobalt) or nickel tungstate (cobalt) compounds, thereby being capable of avoiding the reaction between the metals and the carrier, simultaneously leading the metal active components to be easier to be sulfurized and being capable of improving the activity of the hydrogenation catalyst.

Description

technical field [0001] The invention relates to a preparation method of a hydrogenation catalyst, which belongs to the improvement of the preparation method of the catalyst in the chemical and chemical technology field. The technology is mainly that the catalyst uses Ni, Mo, Co, W as the metal active components, urea or ammonia as the reaction aid, and alumina as the carrier, and uses the method of in-situ reaction in the pores of the carrier to make the metal active components Generate nickel (cobalt) molybdate (cobalt) or nickel (cobalt) tungstate compounds, thereby avoiding the reaction between the metal and the carrier, and at the same time making the metal active components easier to be vulcanized, which can improve the activity of the hydrogenation catalyst. Background technique [0002] Currently the most common hydrogenation catalysts are supported Co-Mo, Ni-Mo, Ni-W, Ni-Mo-W, Co-Mo-W, Co-Ni-Mo, Co-Ni-W and Co-Ni- Catalysts such as Mo-W, typical carrier materials ge...

Claims

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Application Information

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IPC IPC(8): B01J23/888C07B31/00
Inventor 殷长龙刘晨光赵瑞玉赵会吉徐永强柴永明邢金仙
Owner BC P INC CHINA NAT PETROLEUM CORP
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