Carbon carrier for hydrogenation catalyst and preparation method thereof and palladium-system-supported hydrogenation catalyst and application thereof

A hydrogenation catalyst and carbon carrier technology, applied in the field of palladium-based supported hydrogenation catalysts, can solve the problems of complex methods and high costs, and achieve the effects of simple methods, low production costs, and extended service life

Active Publication Date: 2018-05-11
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods for preparing carbon supports are relatively complicated, and the cost is high in large-scale industrial production

Method used

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  • Carbon carrier for hydrogenation catalyst and preparation method thereof and palladium-system-supported hydrogenation catalyst and application thereof
  • Carbon carrier for hydrogenation catalyst and preparation method thereof and palladium-system-supported hydrogenation catalyst and application thereof
  • Carbon carrier for hydrogenation catalyst and preparation method thereof and palladium-system-supported hydrogenation catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This example is used to illustrate the carbon carrier of the present invention and its preparation method.

[0063] Mix 300g of phenolic resin, 30g of hexamethylenetetramine and 100g of starch into a kneader, then add 80mL of deionized water and knead for 10 minutes, and then extrude into a gear shape to obtain a carbon carrier precursor. The carbon carrier precursor was aged in air at room temperature for 12 hours, then dried at 80°C for 6 hours, then cured at 150°C for 12 hours, and finally carbonized at 650°C for 3 hours in a nitrogen atmosphere , so as to obtain the carbon support. The specific surface area of ​​the carbon carrier is 465.61m 2 / g, the average pore diameter is 3.26nm. The strength of the carbon support is 83.5N / particle, and the total surface acidity is 0.19mmol / g.

[0064] Using infrared spectroscopy to analyze the surface functional groups of the carrier, the results are as follows figure 1 As shown, as can be seen from the figure, the surface ...

Embodiment 2

[0066] This example is used to illustrate the carbon carrier of the present invention and its preparation method.

[0067] Weigh 240g of phenolic resin, 30g of hexamethylenetetramine, 60g of melamine formaldehyde resin and 60g of starch and mix them evenly into a kneader, then add 90mL of deionized water and knead for 5-15 minutes, and then extrude into a gear shape. Aging in air at room temperature for 12 hours, drying at 80°C for 6 hours, curing at 150°C for 12 hours, and carbonization at 650°C for 3 hours in a nitrogen atmosphere to obtain a carbon support. The specific surface area of ​​the obtained carbon support is 414.10m 2 / g, the average pore diameter is 3.26nm; the measured strength of the carbon carrier is 96.4N / particle, and the total surface acidity is 0.17mmol / g.

Embodiment 3

[0069] This example is used to illustrate the palladium-based supported hydrogenation catalyst of the present invention.

[0070] The carbon support 100g that adopts embodiment 1 to make, specific surface is 465.61m 2 / g. Measure 50mL of palladium nitrate solution containing 0.6mg / mL of palladium, mix it with 5mL of potassium lauryl polyoxyethylene ether phosphate glue containing 1wt% surfactant, and then impregnate it on the carbon support, and heat it at 120°C After drying for 12 hours, catalyst A was obtained, and the Pd content determined by atomic absorption spectrometry was 0.03%.

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Abstract

The invention provides a carbon carrier for a hydrogenation catalyst and a preparation method thereof and a palladium-system-supported hydrogenation catalyst and application thereof. The surface of the carbon carrier has oxygen-containing groups, and the strength of the carbon carrier is 70-120N / particle, and the specific surface area of the carbon carrier is 1-2000m<2> / g, and the average poresize is 2-10nm. The preparation method of the carbon carrier for the hydrogenation catalyst includes 1) even mixing of an organic polymer compound and a curing accelerator to obtain a curing system;2) mixing of the curing system with water, and successive kneading and forming of the obtained mixture to obtain a carbon carrier precursor; and 3) successive aging, drying, curing and carbonization of the obtained carbon carrier precursor to obtain the carbon carrier. The carbon carrier prepared by the method has large specific surface area, high strength, less impurity and easily-controlled shape. The preparation method of the carbon carrier is simple and practical, and is suitable for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of carbon materials, and in particular relates to a carbon support for a hydrogenation catalyst and a preparation method thereof, a palladium-based supported hydrogenation catalyst and an application thereof. Background technique [0002] In the production of polyethylene, a small amount of acetylene in ethylene will reduce the activity of the polymerization catalyst and deteriorate the physical properties of the polymer. Therefore, the content of acetylene in ethylene must be reduced below a certain value before it can be used as a synthetic polymer. monomer. In order to meet the requirements of the polymerization grade, it is necessary to remove alkyne from the carbon distillate. Generally, selective hydrogenation, a relatively economical method, is used to remove alkynes in the carbon distillate. Using a selective hydrogenation catalyst to convert acetylene in the carbon distillate into ethylene through...

Claims

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Application Information

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IPC IPC(8): B01J21/18B01J23/44B01J23/50C07C5/09C07C11/04
CPCC07C5/09B01J21/18B01J23/44B01J23/50B01J37/084C07C2523/44C07C2523/50B01J35/615B01J35/647C07C11/04Y02P20/52
Inventor 张立岩蒋海斌彭晖戴伟张晓红鲁树亮吴佳佳乔金樑毛祖旺穆玮
Owner CHINA PETROLEUM & CHEM CORP
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