Alkyne selective hydrogenation catalyst carrier and preparation method and catalyst thereof

A catalyst carrier, a technology for selective hydrogenation, applied in catalyst carriers, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc. Loss and other problems, to achieve the effect of small wear loss, overcoming easy peeling and easy loss, and reducing the amount of production

CN102688783AInactive Publication Date: 2012-09-26CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-09-26
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention discloses an alkyne selective hydrogenation catalyst carrier and a preparation method thereof; the hydrogenation catalyst carrier is obtained by well mixing and compounding alumina with one or two of SiC and talcum, and a catalyst containing an active ingredient of palladium is prepared. The catalyst can also contain co-catalytic ingredients of Ag, Mn, Bi, Mo, W, Cu, Zn, alkali metal, alkaline earth metal, and rare earth elements. The catalyst carrier has low raw material cost, and the obtained catalyst has high selective hydrogenation activity and good selectivity.
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Description

technical field

[0001] The invention relates to a catalyst carrier and a catalyst, more specifically, the invention relates to a composite carrier for an alkyne selective hydrogenation catalyst and a preparation method, and the catalyst is prepared using the carrier as a carrier. Background technique

[0002] In petrochemical production, the cracked gas produced from the cracking of liquid hydrocarbons usually contains impurities that affect its further processing. The ethylene fraction in the cracking and separation section contains 0.3-2.5% acetylene. This acetylene impurity can poison and deactivate the catalyst in the ethylene polymerization process, affecting the normal progress of the ethylene polymerization reaction. In order to avoid the above-mentioned catalyst poisoning phenomenon, the content of acetylene in the polymerization grade ethylene raw material gas is required to be less than 0.1ppm. In the industry, catalytic selective hydrogenation is often used to re...

Examples

Embodiment 1

[0034] Taking the mixture of alumina and talc as an example, the catalyst carrier of the present invention and its preparation method are described in detail.

[0035] Mix 200g of aluminum hydroxide powder and 600g of talcum powder evenly, add 40.92g of methyl cellulose and mix evenly, then add 300ml of deionized water, and knead in a kneader for a period of time to form a billet. Then extruded in extruder to make Raschig ring with height / outer diameter / inner diameter of about 6mm / 6mm / 3mm. After drying at 100°C, it was calcined at 1130°C for 4 hours in a muffle furnace to obtain a composite carrier A1 of alumina and talc.

Embodiment 2

[0037]Mix 350g of aluminum hydroxide powder and 400g of talcum powder evenly, add 35g of methylcellulose and mix evenly, then add 410ml of deionized water, and knead in a kneader for a period of time to form a billet. The rest are the same as in Example 1 to obtain composite carrier B1.

Embodiment 3

[0039] Mix 400g of aluminum hydroxide powder and 200g of talcum powder evenly, add 30g of methyl cellulose and mix evenly, then add 450ml of deionized water, and knead in a kneader for a period of time to form a billet. The rest are the same as in Example 1 to obtain composite carrier C1.