Catalyst for direct synthesis of arene by synthesis gas and production method and use thereof

A technology for synthesizing aromatics and catalysts, applied in the direction of molecular sieve catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low aromatics selectivity and fluctuation limitation, and achieve high aromatics content, moderate acidity, and technological process simple effect

Inactive Publication Date: 2009-05-06
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
View PDF3 Cites 36 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process route of producing aromatics from methanol and dimethyl ether [Chinese patent 200610012703, EP0090284, EP0005287] has been explored, but this process is easily restricted by the fluctuation of the methanol market, and it is imminent to develop a process for directly producing aromatics from coal
There are not many reports in this work literature, such as N.Guan [Catalysis Today, 30 (1-3): 207-213, 1996] and the like using Cu-Fe / MnO+HZSM-5 and GaZSM-5 catalysts to synthesize aromatics; Wang Desheng et al [ Acta Catalytica Sinica, 23 (4): 333-335, 2002] Utilize Fe / MnO-ZnZSM-5 catalyst to make the low-carbon hydrocarbon intermediate that syngas generates in Fischer-Tropsch reaction directly convert into aromatics on molecular sieves, the process The selectivity of aromatic hydrocarbons is low, only reaching about 53%; Kaoru Fujimoto et al. 2 +H-ZSM-5or H-mordenite catalyst synthesizes aromatics through the route of methanol, olefins, and aromatics, and the selectivity of aromatics is low, only reaching about 50%.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for direct synthesis of arene by synthesis gas and production method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Methanol synthesis catalyst (DC207 produced by Linqu Daxiang Fine Chemical Co., Ltd.), methanol dehydration catalyst (γ-Al 2 o 3 ) were broken to 20-30 mesh respectively, according to DC207 / γ-Al 2 o 3 The volume ratio is 1:1 and mixed to form a catalyst.

[0024] The catalyst for the two-stage synthesis of aromatics is prepared in the following manner:

[0025] (1) The NKF-5 molecular sieve produced by Nankai University Catalyst Factory is exchanged with hydrochloric acid to become hydrogen molecular sieve H NKF-5;

[0026] (2) aluminum phosphate molecular sieve is carried out by the method shown in CN1132781C, concrete process:

[0027] In a 100ml beaker, successively add 2.042 grams of aluminum isopropoxide, 1.153 grams of phosphoric acid (85%), 1.360 grams of rhodamine B, 0.451 grams of diethylamine, 40 grams of water, and 26 grams of ethanol, mix well, and stir at room temperature After 24 hours, a relatively uniform sol was formed. Put the above sol into a po...

Embodiment 2

[0034] Methanol synthesis catalyst (DC207 produced by Linqu Daxiang Fine Chemical Co., Ltd.), methanol dehydration catalyst (γ-Al 2 o 3 ) were broken to 40-60 mesh respectively, according to DC207 / γ-Al 2 o3 The volume ratio is 2:1 and mixed to form a catalyst.

[0035] The catalyst for the two-stage synthesis of aromatics is prepared in the following manner:

[0036] (1) The NKF-5 molecular sieve produced by Nankai University Catalyst Factory is exchanged with hydrochloric acid to become hydrogen molecular sieve H NKF-5;

[0037] (2) aluminum phosphate molecular sieve is carried out by the method shown in CN1132781C, concrete process:

[0038] In a 100ml beaker, successively add 3.065 grams of aluminum isopropoxide, 1.736 grams of phosphoric acid (85%), 2.505 grams of rhodamine B, 0.678 grams of diethylamine, 60 grams of water, and 45 grams of ethanol, mix well, and stir at room temperature After 48 hours, a relatively uniform sol was formed. Put the above sol into a poly...

Embodiment 3

[0045] Methanol synthesis catalyst (DC207 produced by Linqu Daxiang Fine Chemical Co., Ltd.), methanol dehydration catalyst (γ-Al 2 o 3 ) were broken to 30-40 mesh respectively, according to DC207 / γ-Al 2 o 3 The volume ratio is 5:1 and mixed to form a catalyst.

[0046] The catalyst for the two-stage synthesis of aromatics is prepared in the following manner:

[0047] (1) The NKF-5 molecular sieve produced by Nankai University Catalyst Factory is exchanged with hydrochloric acid to become hydrogen molecular sieve H NKF-5;

[0048] (2) aluminum phosphate molecular sieve is carried out by the method shown in CN1132781C, concrete process:

[0049] In a 100ml beaker, successively add 4.084 grams of aluminum isopropoxide, 2.289 grams of phosphoric acid (85%), 3.664 grams of rhodamine B, 0.995 grams of diethylamine, 146 grams of water, and 65 grams of ethanol, mix well, and stir at room temperature After 50 hours, a relatively uniform sol was formed. Put the above sol into a p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a catalyst for directly synthesizing aromatic hydrocarbon by synthesis gas, which has the composition with following weight ratio: HNKF-5:aluminophosphate molecular sieve:Ga2O3:ZnO:BaO equal to 1:1-3:0.01-0.3:0.01-0.3:0.01-0.3. The invention has the advantages of simple technical process, medium catalyst acidity of aromatic hydrocarbon synthesis, better aromatization performance, and high aromatic hydrocarbon content.

Description

technical field [0001] The invention relates to a catalyst for directly synthesizing aromatic hydrocarbons from synthesis gas, a preparation method and application thereof, in particular to a catalyst, preparation method and application for synthesizing aromatic hydrocarbons from synthesis gas through methanol and dimethyl ether. Background technique [0002] Benzene, toluene, and xylene (BTX for short) are important organic chemical raw materials, mainly used to produce chemical products such as chemical fibers, plastics, and rubber. In recent years, with the continuous expansion of polyester production worldwide, the demand for PTA (terephthalic acid) and PX (paraxylene) has increased rapidly. Aromatics resources mainly come from catalytic reforming oil, pyrolysis gasoline and coal tar. With the development of the oil refining industry, the proportion of aromatics using petroleum as raw material is gradually increasing, accounting for more than 98% abroad and more than 85...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/83C07C1/04C07C15/04
CPCY02P20/52
Inventor 韩怡卓谭猗生解红娟赵霞潘俊轩
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap