Catalyst for preparing propylene by methyl alcohol and/or dimethyl ether and preparation method thereof

A technology of catalyst and dimethyl ether, which is applied in the field of molecular sieve catalysts and its preparation, can solve the problems of low propylene yield and poor catalyst stability, achieve reduced propylene yield, short diffusion path, and overcome low propylene selectivity and poor stability Effect

Inactive Publication Date: 2010-01-13
SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing catalysts for the reaction of producing propylene from methanol or dimethyl ether all adopt micron-scale (>100 nano

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] 1 g of analytically pure NH 4 Dissolve F in 10 ml of deionized water and stir to dissolve completely. Then, 5 grams of HZSM-5 molecular sieve with a silicon-alumina ratio of 25 and a grain size of 50-80 nanometers was poured into the above solution, placed at room temperature for 4 hours, dried at 100 ° C for 12 hours, and then placed in a muffle furnace. The catalyst A was prepared by calcining at 500°C for 4 hours.

Example Embodiment

[0019] Example 2

[0020] Catalyst B was prepared in the same manner as in Example 1, except that NH 4 The amount of F was 0.2 g.

Example Embodiment

[0021] Example 3

[0022] Catalyst C was prepared with the same embodiment 1, only NH 4 The amount of F was 0.5 g.

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PUM

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Abstract

The invention discloses a catalyst for preparing propylene by methyl alcohol and/or dimethyl ether and a preparation method thereof. The catalyst takes HZSM-5 molecular sieve with the crystallite dimension being less than 100 nanometers as raw material, and adopts fluorine-containing compound solution for dipping; after that, the catalyst is prepared by high temperature calcination and has the fluorous mass percentage of 2-20%. The catalyst prepared by the method has very high propylene yield and stability for the reaction for preparing the propylene by transforming the methyl alcohol.

Description

technical field [0001] The invention relates to a molecular sieve catalyst for preparing propylene from methanol and / or dimethyl ether and a preparation method thereof. Background technique [0002] Propylene is an important basic organic raw material, mainly used in the production of chemical products such as polypropylene, acrylonitrile and propylene oxide. At present, propylene production mainly comes from steam cracking ethylene units and catalytic cracking units in refineries. Since petroleum is a non-renewable resource with limited reserves and the price of petroleum continues to rise, all countries in the world have begun to devote themselves to the development of non-petroleum route to propylene technology. Among them, the technology of producing propylene from coal, natural gas and biomass through methanol or dimethyl ether has received more and more attention. The key to this technology is the development of high-performance catalysts. At present, the best cataly...

Claims

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Application Information

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IPC IPC(8): B01J29/40B01J27/12B01J37/02B01J37/08C07C11/06C07C1/20
Inventor 毛东森郭强胜劳嫣萍
Owner SHANGHAI APPLIED TECHNOLOGIES COLLEGE
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