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Nickel hydrogenation catalyst

A catalyst and nickel source technology, applied in the field of hydrogenation of unsaturated fatty materials, can solve the problems of limiting the total amount of nickel, unfavorable catalyst metal dispersion and the like

Active Publication Date: 2014-08-20
BASF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the high nickel loading used disadvantageously limits the metal dispersion in the catalyst
In addition, the high precipitation temperature also leads to the formation of nickel silicate, which limits the total amount of nickel in the catalyst that may be easily reduced

Method used

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  • Nickel hydrogenation catalyst
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1 (reference): Nickel catalyst: 59.1 wt% Ni supported on silica

[0053] At a temperature of 90°C, simultaneously and at the same rate, 1000ml of an aqueous solution of nickel chloride (95g / l nickel) and magnesium chloride (7.4g magnesium / liter) and 1000ml of sodium metasilicate (47.6g / lNa 2 SiO 3 ·5H 2 O) solution and sodium carbonate (209 g / liter) were pumped into a stirred 4-liter settling vessel. The initial volume of water in the precipitation vessel was 1725 ml and contained 75 ml of sodium aluminate solution (50.9 g / l Al 2 o 3 ). The pH of the slurry was 7.5 and precipitation was complete after about 1 hour.

[0054] After washing the precipitate with approximately 30 liters of water, the catalyst precursor formed was filtered and dried in an oven at 110°C. The catalyst was activated with hydrogen at 400°C. The TPR maximum peak and specific pore volume were determined (based on the calcined precursor) to be 471° C. and 0.48 ml / g, respectively.

...

Embodiment 2

[0056] Example 2: 40 wt% Ni supported on silica

[0057]At a temperature of 60° C., 1000 ml of an aqueous solution of nickel chloride (81.6 g / l nickel) and 848 ml of a solution of sodium carbonate (220 g / l) were simultaneously pumped into a stirred 4-liter settling vessel. The initial volume of water in the sedimentation vessel is 2000ml and contains 100 grams with a specific pore volume of 1.72ml / g, 271m 2 / g surface area and Highly porous silica powder with peak porosity. The pH of the slurry was 7.5. Precipitation was complete after about 1 hour.

[0058] After washing the precipitate with about 30 liters of cold water, the catalyst precursor formed was filtered and dried in an oven at 110°C. The catalyst was activated with hydrogen at 400°C. The TPR maximum peak and specific pore volume were determined (based on the calcined precursor) to be 385° C. and 0.52 ml / g, respectively.

Embodiment 3

[0059] Example 3: (37.5 wt% Ni supported on silica)

[0060] At a temperature of 60° C., 1000 ml of an aqueous nickel chloride (71.7 g / l nickel) solution and 750 ml of a sodium carbonate (220 g / l) solution were simultaneously pumped into a stirred 4-liter settling vessel. The initial volume of water in the precipitation vessel was 2000 ml and contained 100 grams of highly porous silica powder with a specific pore volume of 1.72 ml / g. The pH of the slurry was 7.5 and the precipitation was complete after about 1 hour.

[0061] After washing the precipitate with approximately 30 liters of cold water, the catalyst precursor formed was filtered and dried in an oven at 110°C. The catalyst was activated with hydrogen at 400°C. The TPR maximum peak and specific pore volume were determined (based on the calcined precursor) to be 395° C. and 0.57 ml / g, respectively.

[0062] Based on the weight of the catalyst, the nickel content of the reduced catalyst was 43.2 wt %; the amount of...

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PUM

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Abstract

The invention relates to a catalyst comprising nickel and a solid silica support, to a process for preparing such a catalyst and to a process for the hydrogenation of an unsaturated fatty material. According to the invention there is provided a catalyst comprising nickel on a solid silica support, wherein said catalyst has a specific pore volume of at least 0.4 ml / g and a TPR peak maximum within the range of 360-420° C.

Description

technical field [0001] The present invention relates to catalysts comprising nickel and a solid silica support, to processes for the preparation of such catalysts and to processes for the hydrogenation of unsaturated fatty materials. Background technique [0002] It is known to prepare partially hydrogenated unsaturated fatty materials such as oils or fatty acids, and in particular edible oils such as soybean oil, rapeseed oil, palm oil, canola oil or fish oil, by catalytic hydrogenation in the presence of hydrogen. The hydrogenation can be performed using conventional hydrogenation catalysts (hydrogenation catalysts), such as nickel or noble metal catalysts. [0003] Catalysts suitable for use in the hydrogenation of edible oils preferably have small particle size, large pores, high catalytic metal dispersion and excellent filtration properties. [0004] Nickel powder catalysts coated with fat (microdroplets) to prevent oxidation are often used in oil and fatty acid hydrog...

Claims

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Application Information

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IPC IPC(8): B01J21/08B01J23/755B01J37/03B01J35/10C11C3/12
CPCC11C3/123C07C5/02B01J21/08B01J37/03B01J35/10C07C51/36B01J23/755B01J35/60C11C3/12
Inventor 赫尔曼纳斯·约翰内斯·鲍曼罗伯特·约翰·安德列斯·玛丽亚·特罗尔德恰林·雷克尔
Owner BASF CORP
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