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Catalyst for preparing arene by methanol conversion and preparation method thereof

A methanol conversion and catalyst technology, which is applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of complex process routes and low selectivity of target products, such as aromatic hydrocarbons.

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 arene by methanol conversion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The preparation of this example includes: based on the total weight of the catalyst, 2% NiO, 3% ZnO, 45% HZSM-5, 15% HZSM-11, 15% HMCM-22, 20% Al 2 o 3 Catalyst A.

[0015] Weigh 45 grams of HZSM-5 molecular sieve, 15 grams of HZSM-11 molecular sieve, 15 grams of HMCM-22 molecular sieve, 20 grams of Al 2 o 3 , 3.8 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 15 mm, dried and roasted at 600 ° C for 4 hours to make 2 ~ 3 mm long catalyst support.

[0016] 20 grams of the above-mentioned catalyst carrier was immersed in 14 milliliters of zinc nitrate aqueous solution containing 0.63 grams of ZnO, left standing at room temperature for 24 hours, dried, and calcined at 450° C. for 6 hours to prepare a catalyst intermediate.

[0017] The catalyst intermediate was immersed in 14 ml of nickel nitrate aqueous solution containing 0.4...

Embodiment 2

[0020] The preparation of this embodiment includes: based on the total weight of the catalyst, 5% P 2 o 5 , 8% ZnO, 30% HZSM-5, 30% HZSM-11, 7% HMCM-22, 20% Al 2 o 3 Catalyst B.

[0021] Weigh 30 grams of HZSM-5 molecular sieve, 30 grams of HZSM-11 molecular sieve, 7 grams of HMCM-22 molecular sieve, 20 grams of Al 2 o 3 , 3.5 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 4 hours to make 2 ~ 3 mm long catalyst support.

[0022] 20 grams of the above-mentioned catalyst carrier was immersed in 14 milliliters of zinc nitrate aqueous solution containing 1.84 grams of ZnO, left to stand at room temperature for 24 hours, dried, and calcined at 480 ° C for 4 hours to prepare a catalyst intermediate.

[0023] The above catalyst intermediate was impregnated in 14 ml containing 1.15 g P 2 o 5 In ...

Embodiment 3

[0026] The preparation of this example includes: based on the total weight of the catalyst, 3% NiO, 5% ZnO, 20% HZSM-5, 12% HZSM-11, 20% HMCM-22, 40% Al 2 o 3 Catalyst C.

[0027] Weigh 20 grams of HZSM-5 molecular sieve, 12 grams of HZSM-11 molecular sieve, 20 grams of HMCM-22 molecular sieve, 40 grams of Al 2 o 3 , 3.7 grams of scallop powder, mixed evenly, adding 43 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 550 ° C for 4 hours to make 2 ~ 3 mm long catalyst support.

[0028] 20 grams of the above-mentioned catalyst carrier was immersed in 15 milliliters of zinc nitrate aqueous solution containing 1.09 grams of ZnO, left to stand at room temperature for 24 hours, dried, and calcined at 500 ° C for 4 hours to prepare a catalyst intermediate.

[0029]The catalyst intermediate was immersed in 15 ml of nickel nitrate aqueous solution containing 0.6...

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Abstract

The invention relates to a catalyst for preparing arene by methanol conversion and a preparation method thereof. The problems of complex process route flow and low selectivity of a target product in the prior art are mainly solved. The problems are well solved by adopting the technical scheme that: the catalyst comprises the following components in part by weight: a) 20 to 80 parts of molecular sieve carrier, b) 0.1 to 12 parts of zinc element or oxide thereof carried on the molecular sieve carrier, c) 0.1 to 10 parts of nickel or phosphorus element or oxide thereof and d) 20 to 80 parts of adhesive, wherein the molecular sieve comprises a mixture of HZSM-5 and at least one of HZSM-11 and HMCM-22 molecular sieves, and the weight ratio of the HZSM-5 to the at least one of the HZSM-11 and the HMCM-22 is (0.1-10): 1. The catalyst can be used in the field of industrially producing the arene by methanol conversion.

Description

technical field [0001] The invention relates to a catalyst for preparing aromatics by converting methanol 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...

Claims

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Application Information

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IPC IPC(8): B01J29/80B01J29/46B01J29/76B01J29/40B01J29/70C07C1/20C07C15/00C07C15/02
CPCY02P20/52
Inventor 林秀英滕加伟李斌朱慧芬
Owner CHINA PETROLEUM & CHEM CORP
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