Catalyst for oxidative dehydrogenation of raw materials containing CO (carbon monoxide) gas

A technology for oxidative dehydrogenation and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, carbon monoxide, etc., can solve the problems of high CO loss rate and low hydrogen removal rate, and achieve The effect of good technical effects

Inactive Publication Date: 2012-08-29
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Obviously, the above technologies have the disadva

Method used

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  • Catalyst for oxidative dehydrogenation of raw materials containing CO (carbon monoxide) gas

Examples

Experimental program
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Example Embodiment

[0022] [Example 1]

[0023] Prepare 100 grams of an aqueous solution of praseodymium nitrate containing 3 grams of praseodymium, and then pour it into a beaker containing 100 grams of a composite carrier with a weight ratio of aluminum oxide and silicon oxide of 5:1, immerse and dry at 120°C, and then After roasting at 480°C for 2 hours, the roasted carrier was immersed in 100 grams of palladium nitrate aqueous solution containing 0.3 g of palladium for 6 hours, and then roasted at 480°C to obtain CO-containing gas raw material oxidative dehydrogenation catalyst A, wherein In terms of weight percentage, the content of palladium oxide is 0.4% and the content of praseodymium oxide is 4%.

[0024] Weigh 50 grams of the prepared catalyst A, put it into a fixed bed reactor, use a mixed gas containing CO with a hydrogen volume content of 1.2% as the raw material gas, at a reaction temperature of 200°C, and a gas volumetric space velocity of 3000h -1 Under the conditions of a pressure of ...

Example

[0025] [Examples 2-15]

[0026] The preparation process and reaction conditions were the same as in Example 1, except that the active components, the content of additives and the weight ratio of alumina and silica in the composite carrier were changed to obtain the catalyst and evaluate the list 1.

[0027] Table 1

[0028]

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Abstract

The invention relates to a catalyst for oxidative dehydrogenation of raw materials containing CO (carbon monoxide) gas, which mainly solves the technical problems in the prior art that the hydrogen removal rate is low, and the loss rate of CO is high. The catalyst comprises a carrier, an active component and an accessory ingredient in percentage by weight: (a) the active component which is selected from at least one of platinum metals, and has the dosage being 0.003-2 percent of the weight of the catalyst in a metering manner of a simple substance; (b) the accessory ingredient which is selected from at least one of Pr, Nd, Cs and Ba, and has the dosage being 0.005-15 percent of the weight of the catalyst in a metering manner of a simple substance; and (c) 84-99.5 percent of carrier, wherein the carrier is selected from a compound type carrier of aluminum oxide and silicon oxide, and the weight ratio of the aluminum oxide to the silicon oxide is 0.01-100:1. According to the technical scheme, the problems are better solved, and the catalyst can be applied in industrial production of oxidative dehydrogenation of raw materials containing the CO gas.

Description

technical field [0001] The invention relates to a catalyst for oxidative dehydrogenation of CO-containing gas raw materials, in particular to a catalyst for removing hydrogen from CO raw material gas for producing ethylene glycol from synthesis gas. Background technique [0002] Oxalate is an important organic chemical raw material, which is widely used in the fine chemical industry to produce various dyes, medicines, important solvents, extractants and various intermediates. In the 21st century, oxalate, as a degradable and environmentally friendly engineering plastic monomer, has received extensive international attention. In addition, oxalic acid can be obtained by normal pressure hydrolysis of oxalate, and oxalamide can be obtained by normal pressure ammonia solution. Oxalate can also be used as a solvent to produce pharmaceutical and dye intermediates, etc., such as various condensation reactions with fatty acid esters, cyclohexylacetophenone, amino alcohols, and many ...

Claims

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Application Information

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IPC IPC(8): B01J23/63B01J23/58C01B31/18C01B32/40
Inventor 李斯琴刘俊涛王万民
Owner CHINA PETROLEUM & CHEM CORP
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