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A dicyclopentadiene hydrogenation special-purpose catalyzer and its preparing method

A technology of dicyclopentadiene and catalyst, applied in the field of catalyst and preparation thereof, can solve the problems of complex preparation process, harsh conditions and the like

Inactive Publication Date: 2008-04-09
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst also adopts the method of loading noble metal salt solution first and then roasting and reducing. The preparation process is complicated and the conditions are harsh.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Aluminum hydroxide powder prepared by nitric acid method or carbonization method is mixed and kneaded with nitric acid aqueous solution, extruded or rolled into balls, dried at 120°C for 4 hours, and then calcined at 900°C for 5 hours to obtain the carrier used in the present invention. Take 30ml of palladium chloride solution (containing 0.25% gPd / ml), and dilute to 0.5L with distilled water. Add 200ml of 5g / L PVP solution into the above solution, stir for 1hr, then add 6.0g / L NaBH dropwise 4 Aqueous solution 1500ml, PVP-protected metal colloid is obtained after reduction. Add 1 kg of the above-mentioned carrier, keep it for 24 hours, wash the catalyst with distilled water until chlorine-free, and dry it in an oxygen-free atmosphere at 120° C. to obtain a finished catalyst. The weight percentage of noble metal in the catalyst is: Pd 0.75%.

Embodiment 2

[0021] The preparation of the carrier was the same as in Example 1. Take 30 ml of chloroplatinic acid solution (containing 0.20% gPt / ml), and dilute to 0.5 L with distilled water. Add 170ml of 5g / L PVP solution into the above solution, stir for 1hr, then add 6.0g / L NaBH dropwise 4 Aqueous solution 1400ml, PVP-protected metal colloid is obtained after reduction. Add 1 kg of carrier, keep it for 24 hours, wash the catalyst with distilled water until chlorine-free, and dry it in an oxygen-free atmosphere at 120° C. to obtain a finished catalyst. The weight percentage of noble metal in the catalyst is: Pt 0.60%.

Embodiment 3

[0023] The preparation of the carrier was the same as in Example 1. Take 20ml of palladium chloride solution (containing 0.25%gPd / ml), take 10ml of chloroplatinic acid solution (containing 0.20%gPt / ml), and dilute to 0.5L with distilled water. Add 190ml of 5g / L PVP solution into the above solution, stir for 1hr, then add 6.0g / L NaBH dropwise 4 Aqueous solution 1500ml, PVP-protected metal colloid is obtained after reduction. Add 1 kg of carrier, keep it for 24 hours, wash the catalyst with distilled water until chlorine-free, and dry it in an oxygen-free atmosphere at 120° C. to obtain a finished catalyst. The palladium noble metal weight percent content in the catalyst is: Pt 0.20%, Pd 0.50%.

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Abstract

The invention relates to dicyclopentadiene hydrogenation special catalyst and the preparation method thereof; a catalyst active component is abstracted from Pd or Pt, the percentage content of the weight can be Pd 0.3 to 1.3 percent or Pt 0.5 to 1.2 percent, carriers can be porous inorganic materials of aluminum oxide, silicon oxide, molecular sieves, kaolin, etc. By adopting the novel noble metal colloid method process, the prepared catalyst has the advantages that the grain size of active component particles is concentrated, the dispersion degree is high, the surface area is large, etc., thus the catalyst activity is higher, and the operating pressure of a hydrogenation device can be notably reduced. The preparation method provided by the invention effectively reduces the quantity of noble metals, the catalyst is used for the dicyclopentadiene petroleum resin hydrogenation device with poor color phase in the carbon five fraction, the content of unsaturated hydrocarbon key can be obviously reduced, and the color phase of the resin is improved to be of a water white color.

Description

technical field [0001] The invention relates to the field of catalyst manufacture, and aims to provide a catalyst specially used for hydrogenation of dicyclopentadiene (DCPD) in carbon five fractions to produce petroleum resin and a preparation method thereof. The invention adopts a novel precious metal colloid process to prepare a hydrogenation catalyst with high dispersion and high surface area, which can effectively reduce the consumption of precious metals. The catalyst exhibits special catalytic performance, thereby reducing the operating pressure of the device, and the obtained hydrogenated resin has significantly low unsaturated hydrocarbon bond content, and the color of the resin is improved to water white. Background technique [0002] Petroleum resin has the characteristics of low acid value, good miscibility, low melting point, good adhesion, water resistance and chemical resistance. However, the unhydrogenated petroleum resin has deep color and poor stability, w...

Claims

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Application Information

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IPC IPC(8): B01J23/42B01J23/44
Inventor 于海斌石芳姜雪丹成宏李孝国孙彦民
Owner CHINA NAT OFFSHORE OIL CORP
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