Hydrogenation catalyst and application thereof

A hydrogenation catalyst and catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, inorganic chemistry, etc., can solve problems such as desorption of unfavorable reaction products, increased consumption of anthraquinone, etc. To achieve the effect of improving the activity and reaction selectivity and good wear resistance

Active Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the acidity of the catalyst carrier is too high, which is not conducive to the desorption of the reaction product, and is prone to produce transitional hydrogenation by-products, increasing the consumption of anthraquinone

Method used

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  • Hydrogenation catalyst and application thereof
  • Hydrogenation catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Carrier preparation

[0034] Add 5kg deionized water in the stirred kettle, add 300g pseudo-boehmite (Germany Condea company, SB, the same below), after stirring and mixing evenly, add silica sol (Qingdao Ocean Chemical Co., Ltd., 40wt%, the same below), so that the silicon-aluminum mass ratio is SiO 2 :Al 2 o 3 =1:4, continue stirring to mix evenly. Take 272.6 g of boric acid (Beijing Huawei Raycus Chemical Co., Ltd., AR) powder, add it to the above slurry, stir and mix evenly to obtain a mixed slurry. The mixed slurry is dried and formed by spray drying equipment. The operating conditions of spray drying are hot air inlet temperature 250°C and exhaust air outlet temperature 150°C. The solid particle powder obtained after spray drying was calcined at 550° C. for 8 hours to obtain the desired carrier.

[0035] (2) Catalyst preparation

[0036] Dissolve 0.168g of palladium chloride (Sinopharm Reagent, AR, the same below) in 10mL of deionized water, take 10g of...

Embodiment 2

[0038] (1) Carrier preparation

[0039] Add 5kg of deionized water into the stirred tank, start stirring and add 300g of pseudo-boehmite, after stirring and mixing evenly, add silica sol, so that the mass ratio of silicon to aluminum is SiO 2 :Al 2 o 3=1:4, continue stirring to mix evenly. Take 134g of boric acid powder, add it into the above slurry, stir and mix evenly to obtain a mixed slurry. The mixed slurry is dried and formed by spray drying equipment. The operating conditions of spray drying are hot air inlet temperature 300°C and exhaust air outlet temperature 200°C. The solid particle powder obtained after spray drying was calcined at 600° C. for 5 hours to obtain the desired carrier.

[0040] (2) Catalyst preparation

[0041] Dissolve 0.168g of palladium chloride in 10mL of deionized water, take 10g of the carrier obtained in step (1), disperse the carrier into the palladium chloride solution, soak at room temperature for 10h, then dry at 100°C for 4h, and then ...

Embodiment 3

[0043] (1) Carrier preparation

[0044] Add 5kg of deionized water into the stirred tank, start stirring and add 300g of pseudo-boehmite, after stirring and mixing evenly, add silica sol, so that the mass ratio of silicon to aluminum is SiO 2 :Al 2 o 3 =1:4, continue stirring to mix evenly. Take 31.5 g of boric acid powder, add it to the above slurry, stir and mix evenly to obtain a mixed slurry. The mixed slurry was dried and formed by spray drying equipment. The spray drying operating conditions were hot air inlet temperature 350°C and exhaust air outlet temperature 250°C. The solid particle powder obtained after spray drying was calcined at 550° C. for 8 hours to obtain the desired carrier.

[0045] (2) Catalyst preparation

[0046] Dissolve 0.168g of palladium chloride in 10mL of deionized water, take 10g of the carrier obtained in step (1), disperse the carrier into the palladium chloride solution, soak at 40°C for 8h, then dry at 80°C for 10h, and then Calcined at ...

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Abstract

The invention discloses a hydrogenation catalyst. The hydrogenation catalyst is characterized in that a composite oxide which is modified by boron and consists of silicon dioxide and activated aluminum oxide is adopted as a carrier, palladium is adopted as a main active component, one component or multiple components of magnesium, calcium, lanthanum, cerium, manganese, iron, cobalt or nickel is/are adopted as an auxiliary active component (s); for the carrier, the weight ratio of the silicon dioxide (SiO2) to the activated aluminum oxide (Al2O3) is 1: (0.5-60), boron in the carrier accounts for 0.1-30% by weight, and palladium accounts for 0.01-10% by weight in the catalyst; the auxiliary active component in the catalyst accounts for 0-8% by weight. The catalyst is applied in the anthraquinone hydrogenation of fluidized beds, and the wear resistance, the activity and the selectivity can be obviously improved.

Description

technical field [0001] The present invention relates to a hydrogenation catalyst and its application, more specifically to a hydrogenation catalyst with palladium as an active component and its application in a fluidized bed anthraquinone hydrogenation process. Background technique [0002] As an ideal green chemical, hydrogen peroxide is widely used in the fields of chemical synthesis, industrial bleaching and environmental protection. The anthraquinone method is currently the most widely used method for producing hydrogen peroxide at home and abroad. The principle of the method is that alkyl anthraquinone is hydrogenated under the action of hydrogen and a catalyst to generate alkyl anthrahydroquinone, and then the generated alkyl anthrahydroquinone is restored to alkyl anthraquinone under the action of oxygen oxidation, and hydrogen peroxide is generated at the same time. Among them, the alkylanthraquinone hydrogenation process is the core of the anthraquinone process. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44B01J23/656B01J23/89B01J23/63C01B15/023
Inventor 郑帅潘智勇孟祥堃慕旭宏宗保宁
Owner CHINA PETROLEUM & CHEM CORP
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