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Metal-modified eutectic zeolite catalyst with EUO (Europium Oxide) structure as well as preparation method and application thereof

A eutectic zeolite and metal modification technology, which is applied in the direction of catalyst activation/preparation, isomerization to hydrocarbons, molecular sieve catalysts, etc., can solve the problems of low conversion ability, low activity and selectivity, and achieve simple preparation process, The effect of good catalytic performance and good mechanical crushing strength

Active Publication Date: 2011-03-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current industrial operating catalysts still have the defects of low activity and selectivity, and at the same time, the ability to convert to the target product xylene in the conversion process of ethylbenzene is low

Method used

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  • Metal-modified eutectic zeolite catalyst with EUO (Europium Oxide) structure as well as preparation method and application thereof
  • Metal-modified eutectic zeolite catalyst with EUO (Europium Oxide) structure as well as preparation method and application thereof
  • Metal-modified eutectic zeolite catalyst with EUO (Europium Oxide) structure as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of catalyst C1 containing 35.0 wt% EU-1 / MOR eutectic zeolite with a Si / Al ratio of 30, 63.15 wt% alumina and 0.35 wt% platinum and 1.50 wt% cerium.

[0018] The EU-1 / MOR eutectic zeolite with a Si / Al ratio of 30 is fully mixed with aluminum hydroxide powder, the prepared 3wt% nitric acid aqueous solution is added to the powder mixture and mixed evenly, and then the mixture is extruded into rods. The strip mixture was allowed to stand at room temperature for 4 hours, and then dried at 120°C for 6 hours, then the strips were cut into pellets with a length of 3 to 8 mm (wherein the particles of 4 to 6 mm accounted for more than 80%), and dried in air. It was calcined at 500° C. for 4 hours under an atmosphere to prepare a support. According to zeolite: NH 4 The ratio of Cl=1:0.26 was used to prepare a 3wt% ammonium chloride aqueous solution, and then ion-exchange the prepared support with the ammonium chloride aqueous solution for 2 hours under the condition o...

Embodiment 2

[0020] Preparation of catalyst C2 containing 50.0 wt% EU-1 / MOR eutectic zeolite with a Si / Al ratio of 60, 48.15 wt% alumina, 0.35 wt% platinum and 1.50 wt% cerium.

[0021] The EU-1 / MOR eutectic zeolite with a Si / Al ratio of 60 was calcined at 350°C for 4 hours in nitrogen with 5% oxygen concentration, then fully mixed with aluminum hydroxide powder, and the prepared 3wt% nitric acid aqueous solution was added to the Mix well in the powder mixture, then extrude the mixture into bars. The strip mixture was allowed to stand at room temperature for 4 hours, and after drying at 110°C for 6 hours, the strips were cut into pellets, with a length of 3 to 8 mm (wherein the particles of 4 to 6 mm accounted for more than 80%). It was calcined at 550° C. for 4 hours under an atmosphere to prepare a support. According to zeolite: NH 4The ratio of Cl=1:0.26 was used to prepare a 3wt% ammonium chloride aqueous solution, and then ion-exchange the prepared support with the ammonium chloride...

Embodiment 3

[0023] Preparation of catalyst C3 containing 35.0 wt% EU-1 / MOR eutectic zeolite with a Si / Al ratio of 30, 64.40 wt% alumina and 0.10 wt% platinum and 0.50 wt% cerium.

[0024] The EU-1 / MOR eutectic zeolite with a Si / Al ratio of 30 is fully mixed with aluminum hydroxide powder, the prepared 3wt% nitric acid aqueous solution is added to the powder mixture and mixed evenly, and then the mixture is extruded into rods. The strip mixture was allowed to stand at room temperature for 4 hours, and then dried at 120°C for 6 hours, then the strips were cut into pellets with a length of 3 to 8 mm (wherein the particles of 4 to 6 mm accounted for more than 80%), and dried in air. It was calcined at 500° C. for 4 hours under an atmosphere to prepare a support. Prepare an aqueous solution of 3wt% ammonium chloride at the ratio of zeolite:NH4Cl=1:0.26, then ion-exchange the prepared support with the aqueous solution of ammonium chloride in a water bath at 90°C for 2 hours, and wash until ther...

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Abstract

The invention relates to a metal-modified eutectic zeolite catalyst with an EUO (Europium Oxide) structure as well as a preparation method and application thereof. The metal-modified eutectic zeolite catalyst comprises the components by weight based on 100 percent: 1-90 percent of hydrogenous zeolite with the EUO structure, 0.01-2.0 percent of Pt and / or Pd, 0.01-4.0 percent of Ce and / or La and the balance of bonding agent, wherein the zeolite comprises an element T containing silicon, aluminum and / or magnesium; the atom ratio of Si to T is 8-100; the preparation method comprises the following steps of: roasting the zeolite with the EUO structure in the low-oxygen concentration atmosphere; mixing the zeolite with the bonding agent and forming; roasting; making the mixture exchange ion with NH4Cl water solution and impregnating with platinic chloride solution or ammonium platonic complex ions and / or palladium chloride; meanwhile, adding cerium nitrate solution and / or lanthanum nitrate solution; and filtering, drying and activating. The invention can be used for isomerization reaction of C8 aronmatic, can greatly improve the reactivity and improve the quantity of the conversion of phenylethane into a target product of dimethylbenzene and effectively inhibit side effects in the isomerized process.

Description

technical field [0001] The invention relates to a metal-modified eutectic zeolite catalyst containing EUO structure, a preparation method and application. Background technique [0002] At present, the C8 aromatic hydrocarbon isomerization catalyst processes used in industry include the process of converting ethylbenzene into xylene and the process of deethylating ethylbenzene into benzene. The metal component used in the catalyst is basically noble metal platinum. Although there are differences in content and loading method, there is no big difference, and the molecular sieve acid component used in each catalyst is different: for ethylbenzene conversion For the xylene process, UOP’s I-400 catalyst is UZM series, IFP’s OPARIS catalyst is EUO series, and SINOPEC-RIPP’s SKI-400 catalyst is MOR series; for the process of ethylbenzene deethylation into benzene, UOP’s I-300 catalyst, EXXON-MOBIL's EB-4500 catalyst and SINOPEC-RIPP's SKI-100 catalyst are all ZSM-5 series, but the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/74B01J37/08B01J37/30B01J37/10B01J37/02C07C5/27C07C15/08
CPCY02P20/52
Inventor 桂鹏袁晓亮侯远东鞠雅娜张学军张振莉陈烈杭钟海军谭青峰
Owner PETROCHINA CO LTD
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