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Catalyst for preparing aromatic hydrocarbon through methanol conversion and preparation method thereof

A methanol conversion and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of low selectivity of target product aromatics and complex process routes

Active Publication Date: 2012-03-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by the present invention is the complex process route and the low selectivity of the target product aromatics (especially BTX) existing in the prior art, and a new catalyst for the conversion of methanol to aromatics is provided

Method used

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  • Catalyst for preparing aromatic hydrocarbon through methanol conversion and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 10% HZSM-11, 25% Hβ, 30% Al 2 o 3 Catalyst A.

[0015] Weigh 30 grams of HZSM-5 molecular sieve, 10 grams of HZSM-11 molecular sieve, 25 grams of Hβ molecular sieve, 30 grams of Al 2 o 3 , 38 grams of scallop powder, mixed evenly, adding 42 grams of nitric acid aqueous solution with a mass concentration of 5%, fully kneaded and extruded into a cylindrical shape with a diameter of 1.5 mm, dried and roasted at 520 ° C for 6 hours to make 2 ~ 3 mm long catalyst support.

[0016] 20 g of the above catalyst carrier was impregnated in 14 ml containing 0.63 g La 2 o 3 In the aqueous solution of lanthanum nitrate, the catalyst intermediate was prepared after standing at room temperature for 24 hours, drying, and calcining at 480°C for 4 hours.

[0017] The above catalyst intermediate was impregnated in 14 ml containing 0.42 g P 2 o 5 In the ...

Embodiment 2

[0020] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 18% HZSM-11, 17% Hβ, 30% Al 2 o 3 Catalyst B.

[0021] The preparation method is the same as in Example 1, except that 18 grams of HZSM-11 molecular sieve and 17 grams of Hβ molecular sieve are weighed.

[0022] Catalyst evaluation conditions are the same as in Example 1, and the reaction results are listed in Table 2.

Embodiment 3

[0024] The preparation of this embodiment includes: based on the total weight of the catalyst, 2% P 2 o 5 , 3% La 2 o 3 , 30% HZSM-5, 25% HZSM-11, 10% Hβ, 30% A1 2 o 3 Catalyst C.

[0025] The preparation method is the same as that of Example 1, except that 25 grams of HZSM-11 molecular sieve and 10 grams of Hβ molecular sieve are weighed.

[0026] Catalyst evaluation conditions are the same as in Example 1, and the reaction results are listed in Table 2.

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Abstract

The invention relates to a catalyst for preparing aromatic hydrocarbon through methanol conversion and a preparation method thereof, and mainly solves the problems of complex technological process and low selectivity of the target product in the prior art. According to the invention, the catalyst comprises the following components of: by weight, a) 20-80 parts of a molecular sieve carrier; b) 0.5-12 parts of lanthanum element or its oxide which is carried on a); c) 0.5-10 parts of phosphor element or its oxide; d) 20-80 parts of a binder, wherein the molecular sieve comprises a mixture of HZSM-5 and at least one component selected from HZSM-11 or Hbeta molecular sieves; and the weight ratio of HZSM-5 to the at least one component selected from HZSM-11 or Hbeta is 0.1-10: 1. The technical scheme provided by the invention greatly solves the problems and can be used in the industrial production of aromatic hydrocarbon through methanol conversion.

Description

technical field [0001] The invention relates to a catalyst for converting methanol into aromatics and a preparation method thereof. Background technique [0002] Due to the shortage of oil and natural gas resources in my country, coal resources are relatively abundant. In recent years, my country's coal chemical industry has experienced a hot situation, and various coal chemical projects have been launched in various places. As a relatively mature coal chemical technology, coal-based methanol synthesis has become the preferred project of most coal chemical enterprises. In recent years, my country's production of methanol using coal as raw material is developing towards large-scale and energy-saving development, and the output continues to increase. The production capacity of methanol will far exceed the actual demand. It is of great significance to the development of the methanol industry to have the production technology level of the downstream products of methanol. [00...

Claims

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Application Information

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IPC IPC(8): B01J29/80C07C2/88C07C15/00
Inventor 林秀英滕加伟李斌朱慧芬
Owner CHINA PETROLEUM & CHEM CORP
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