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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Obviously, the above technologies have the disadvantages of low hydrogen removal rate and high CO loss rate.

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Configure 100 grams of aqueous solution of praseodymium nitrate containing 3 grams of praseodymium, then pour it into a beaker that is equipped with 100 grams of aluminum oxide and silicon oxide in a weight ratio of 5: 1, dry it at 120 ° C after impregnation, and Roasting at 480 DEG C for 2 hours, then putting the calcined carrier into 100 g of palladium nitrate aqueous solution containing 0.3 g of palladium, impregnating and adsorbing for 6 hours, and then roasting at 480 DEG C to obtain CO-containing gas raw material oxidative dehydrogenation catalyst A, wherein , by 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, and use a CO-containing mixed gas with a hydrogen volume content of 1.2% as the raw material gas, at a reaction temperature of 200 ° C, and a gas volume space velocity of 3000 h -1 , the pressure is 0.2MPa, and the oxyg...

Embodiment 2～15

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

[0027] Table 1

[0028]

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PUM

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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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