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Catalyst for selective hydrogenation of oxygen-containing olefin material, and preparation method and use thereof

A technology of selective hydrogenation and catalyst, applied in the direction of catalyst activation/preparation, selective hydrofining, metal/metal oxide/metal hydroxide catalyst, etc., which can solve the problems of poor resistance to carbon monoxide fluctuations, activity and selectivity Not high, catalyst poisoning and deactivation, etc., to achieve long regeneration cycle, reduce carbon deposition, and good anti-oxidation poisoning effect

Inactive Publication Date: 2011-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problems in the prior art that the activity and selectivity of the selective hydrogenation catalyst are not high, the ability to resist fluctuations of carbon monoxide is poor, and the oxygen contained in the material is likely to cause the catalyst to be poisoned and deactivated, after in-depth and meticulous research, the inventors have found a A Pd-Au-Ag system catalyst, due to the synergistic effect of multiple components, the catalyst can significantly improve the activity and selectivity, and has good anti-oxygen poisoning and anti-carbon monoxide fluctuation performance. It has selective hydrogenation and Choose the dual function of carbon monoxide oxidation, the catalyst also has the characteristics of long regeneration cycle and long service life

Method used

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  • Catalyst for selective hydrogenation of oxygen-containing olefin material, and preparation method and use thereof
  • Catalyst for selective hydrogenation of oxygen-containing olefin material, and preparation method and use thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0045] Accurately weigh 200 grams of alumina carrier and place it in a beaker. Accurately weigh lanthanum nitrate in such an amount that the final prepared catalyst contains 0.5 wt% lanthanum. Add water to dissolve it and impregnate it in equal volume, dry at 120°C for 4 hours, and then dry at 1100°C. Roast for 4 hours; get an appropriate amount of palladium nitrate solution, spray it on the above-mentioned carrier with the solution amount of equal volume impregnation, make the catalyst contain palladium 0.03wt%, then dry at 120°C for 4 hours, and bake at 500°C for 4 hours; The load is similar, and the silver of 0.09wt% and the bismuth of 0.03wt% are loaded at the same time, dry and roast as above; after that, take an appropriate amount of HAuCl 4 Gold solution, heated to 80 °C, with 0.01 M Na 2 CO 3 Solution, adjust the pH value to about 6 to prepare gold sol, load it on the above-mentioned carrier according to the principle of equal-volume impregnation, and after standing f...

Embodiment 2

[0047] The preparation method is the same as that in Example 1, after loading lanthanum, palladium, and silver on the carrier in sequence, gold is then loaded. Take an appropriate amount of gold solution, heat it to 50°C, adjust the pH value to about 10 to prepare a gold sol, load it on the above-mentioned carrier according to the principle of equal volume impregnation, and soak the above-mentioned carrier with 15% dilute ammonia water after standing for 24 hours. After repeated washing with deionized water at 50 °C to remove Cl - In this way, 0.01 wt% of gold is loaded on the carrier, and then dried at 120° C. for 4 hours and calcined at 500° C. for 4 hours. Prepared 0.03Pd 0.03Au0.09Ag0.09Bi0.5La of 1 # catalyst.

Embodiment 3

[0049] The preparation method is the same as that in Example 1, lanthanum, palladium, and gold are loaded on the carrier in sequence, and then silver is loaded. The process of loading gold is as follows. Take an appropriate amount of gold solution, heat it to 70°C, adjust the pH value to about 8 to prepare gold sol, load it on the above-mentioned carrier according to the principle of equal volume impregnation, and soak the above-mentioned carrier with 15% dilute ammonia water after standing for 24 hours. After repeated washing with deionized water at 70 °C to remove Cl - In this way, 0.01 wt% of gold is loaded on the carrier, and then dried at 120° C. for 4 hours and calcined at 500° C. for 4 hours. Prepared 0.03Pd 0.09Au0.01Ag0.01Bi0.5La of 1 # catalyst.

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Abstract

The invention provides a catalyst for the selective hydrogenation of an oxygen-containing olefin material, which comprises a porous inorganic carrier, main active components and auxiliary active components, wherein the main active components and the auxiliary active components are loaded on the porous inorganic carrier. The catalyst is characterized in that: the main active components are Pd, Au and Ag; the auxiliary active components may be at least one of Bi, Zr, Ce, Zn, Ni, Cu, K, Mg, Ba, Ca, Sn, Pb, Mn, La, Ti, Sr and Na. Because of the synergistic effect of a plurality of components, the activity and selectivity of the catalyst are both improved obviously; the catalyst has high oxygen poisoning resistant performance and high carbon oxide fluctuation resistant performance, and has functions of selective hydrogenation and selective carbon monoxide oxidation. The catalyst also has the characteristics of long regeneration period, long use period and the like.

Description

technical field [0001] The present invention relates to an unsaturated selective hydrogenation catalyst, its preparation method and its application, more specifically, relates to a selective hydrogenation catalyst suitable for petroleum hydrocarbon thermal cracking process and catalytic cracking process, especially suitable for methanol to olefin Process, in the case of oxygen in the material, the catalyst for selectively hydrogenating the C2-C4 alkyne or diene contained in it to the corresponding olefin, and at the same time selectively oxidizing the carbon monoxide and oxygen contained therein to carbon dioxide; it can also be used as A selective hydrogenation catalyst resistant to oxygen poisoning is used. Background technique [0002] As we all know, whether it is thermal cracking using petroleum route, or using coal or natural gas instead of petroleum route to produce methanol or dimethyl ether for reconversion (such as the MTO or OTO process of methanol or dimethyl eth...

Claims

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Application Information

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IPC IPC(8): B01J23/68B01J23/66B01J37/00C07C5/09C07C5/05C07C7/167C07C11/04C07C7/148C10G45/40
CPCY02P20/52
Inventor 王育彭晖戴伟穆玮刘海江汪晓菁
Owner CHINA PETROLEUM & CHEM CORP
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