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Supported ruthenium catalyst and preparation method thereof

A ruthenium catalyst and catalyst technology, which are applied in the directions of hydrogenation preparation, molecular sieve catalyst, amino compound preparation, etc., can solve the problems of increased operating cost, high pressure reaction device cost, uneconomical production, etc., and achieve high safety, low cost and good economy. Effect

Inactive Publication Date: 2012-05-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is obvious to use a higher hydroprocessing pressure, which is uneconomical in production, because it increases the operating cost and the cost of the required high-pressure reaction device, and its shortcoming is similar to that of US3334149

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Weigh 20g of spherical alumina with a diameter of 1.5-2.5mm (surface area 260m 2 / g), weigh 1.00g of calcium nitrate and dissolve it in 20g of deionized water, impregnate the same amount on the alumina carrier, dry at 100°C for 6h, then bake at 650°C for 5h, and cool naturally to room temperature. Take 20g of a mixed solution of ruthenium trichloride hydrate and nickel nitrate hexahydrate with a ruthenium content of 3.0% and a nickel content of 0.4%, impregnate an equal amount on an alkaline-earth modified alumina carrier, dry at 100°C for 10h, and then dry at 50°C Reduction with 15% formaldehyde solution at ℃ for 2h, washing with deionized water, and drying at 100℃ for 10h to obtain catalyst A.

Embodiment 2

[0036] Weigh 20g of spherical alumina with a diameter of 1.5-2.5mm (surface area 5m 2 / g), weigh 0.020g of calcium nitrate and dissolve it in 20g of deionized water, spray it on the alumina carrier, dry it at 50°C for 6h, then bake it at 200°C for 5h, and cool it down to room temperature naturally. Take 20g of a mixed solution of ruthenium trichloride hydrate and nickel nitrate hexahydrate with a ruthenium content of 0.1% and a nickel content of 0.01%, impregnate an equal amount on the alkaline earth modified alumina carrier, dry at 100°C for 10h, and then It was reduced with 15% formaldehyde solution for 2 hours, washed thoroughly with deionized water, and dried at 100°C for 10 hours to obtain catalyst B.

Embodiment 3

[0038] Weigh 20g of spherical alumina with a diameter of 1.5-2.5mm (surface area 300m 2 / g), weighed 4.0g of calcium nitrate and dissolved it in 20g of deionized water, impregnated the alumina support in excess, dried at 200°C for 6h, then roasted at 900°C for 5h, and cooled naturally to room temperature. Take 20g of a mixed solution of ruthenium trichloride hydrate and nickel nitrate hexahydrate with a ruthenium content of 5.0% and a nickel content of 5.0%, impregnate an equal amount on the alumina carrier modified by alkaline earth, dry at 100°C for 10h, and then dry at 80 Reduction with 15% formaldehyde solution for 2 hours at a temperature of °C, fully washed with deionized water, and drying at 100 °C for 10 hours to obtain catalyst C.

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Abstract

The invention discloses a supported ruthenium catalyst and a preparation method thereof. The preparation method is characterized in that the preparation method comprises the following steps: 1, preprocessing a carrier with a soluble alkaline earth metal salt, wherein the mass of the soluble alkaline earth metal salt accounts for 0.1-20% of the mass of the carrier; and 2, dipping the alkaline earth metal salt processed carrier with a material which comprises a primary active component metallic ruthenium and an assisted catalytic component comprising one or several of Ni, Co, Pd and Pt, wherein the mass of the primary component metallic ruthenium accounts for 0.1-5% of the carrier, and the mass of the secondary component comprising one or several of Ni, Co, Pd and Pt accounts for 0.01-5% of the mass of the carrier. The catalyst of the invention is mainly applied to the selective hydrogenation process of an aromatic ring of an aromatic compound, wherein the aromatic ring of the aromatic compound has at least one alkyl group, one ester group, one hydroxyl group or an amino group and also has at least one C1-8 alkyl group. Compared with catalysts prepared with the prior art, the catalyst of the invention has the advantages of low cost, simple preparation method, high activity, good selectivity, high safety in the operation of the aromatic ring hydrogenation, realization of the operation of the aromatic ring hydrogenation under a low pressure, and good economy.

Description

technical field [0001] The present invention relates to a supported metal catalyst and a preparation method thereof, in particular to a catalyst with metal ruthenium as the first component, any one of metal nickel, cobalt, palladium and platinum as the second component, and alkaline earth metal The invention relates to a supported ruthenium catalyst with an oxide as an auxiliary agent and a preparation method thereof. Background technique [0002] Selective hydrogenation of aromatic compounds through the benzene ring has become an important method for the preparation of cyclohexane compounds. For example, alkyl cyclohexanol prepared by catalytic hydrogenation of phenols substituted by different alkyl groups is widely used. Cyclohexanol is the main raw material for the manufacture of nylon. Cyclohexanol and alkylcyclohexylcyclohexanol are important intermediates for the preparation of liquid crystals. Dimethyl 1,4-cyclohexanedicarboxylate is obtained from dimethyl terephtha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/46B01J23/89B01J29/068B01J29/072C07B35/02C07C69/75C07C67/303C07C5/10C07C13/18C07C29/19C07C35/08C07C209/72C07C211/35
Inventor 堵文斌朱庆奋王继元卞伯同许建文陈韶辉柏基业庞炎
Owner CHINA PETROLEUM & CHEM CORP
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