A kind of high-activity heavy aromatics lightening catalyst and preparation method thereof

A technology for lightening and high activity of heavy aromatics, which can be used in catalyst activation/preparation, physical/chemical process catalysts, molecular sieve catalysts, etc. Stability, optimizing matching relationship, reducing the effect of carbon deposition inactivation rate
CN110465327BActive Publication Date: 2022-07-15CNOOC TIANJIN CHEM RES & DESIGN INST +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CNOOC TIANJIN CHEM RES & DESIGN INST
Publication Date
2022-07-15

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Abstract

The invention discloses a high-activity heavy aromatic hydrocarbon lightening catalyst and a preparation method thereof. The high-activity heavy aromatics lightening catalyst in the present invention is prepared by loading a precious metal precursor on a composite carrier through drying and roasting; the precious metal precursor is made of at least one of sponge platinum or chloroplatinic acid as a raw material, dissolved in Prepared platinum(IV) complex. The noble metal precursor can realize the directional quantitative impregnation on the composite support, and optimize the bifunctional matching relationship of the catalyst. The catalyst of the invention can efficiently process C under low pressure conditions 10 + The heavy aromatics have higher yields of light aromatics such as BTX, thereby solving the problems of low conversion depth of heavy aromatics, fast deactivation rate of catalyst carbon deposition and low yield of light aromatics in the prior art. Compared with the prior art, the catalyst of the present invention has higher activity and stability for lightening heavy aromatic hydrocarbons, and is especially suitable for processing inferior C. 10 + Heavy aromatics.
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Description

technical field

[0001] The present invention relates to applications suitable for inferior C 10 + The invention relates to a catalyst for clean and efficient utilization of heavy aromatics, in particular to a catalyst for lightening heavy aromatics and producing more light BTX aromatics and a preparation method thereof. Background technique

[0002] Heavy aromatics mainly refer to C by-products of catalytic reforming units. 10 + Heavy aromatics, ethylene cracker by-product C 10 + Heavy aromatics, aromatics disproportionation and isomerization to generate oil, heavy aromatics produced by high-temperature coal coking, etc. At present, heavy aromatics can be separated into high-value mesitylene, mesitylene, naphthalene, etc. by simple rectification. Some of them can be used to produce aromatic hydrocarbon solvent oil or gasoline blending components, etc., and most of them are used as low-cost fuels, and the utilization rate of raw materials is low, making it difficult to c...

Claims

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