Mesoporous Mn/Al oxide catalyst, and its preparation method and use

A mesoporous alumina and catalyst technology, which is applied in catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of no porous structure, uneven catalyst dispersion, large particles, etc. achieve the effect of reducing energy consumption

Inactive Publication Date: 2005-02-16
FUDAN UNIV
View PDF0 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst obtained by the general method has defects such as uneven

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
  • Mesoporous Mn/Al oxide catalyst, and its preparation method and use
  • Mesoporous Mn/Al oxide catalyst, and its preparation method and use
  • Mesoporous Mn/Al oxide catalyst, and its preparation method and use

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] Example 1: Preparation of mesoporous alumina MSU-γ(1)

[0025] Weigh 37.53 grams of Al(NO 3 ) 3 ·6H 2 Add 38.5 grams of water to the metal nitrate of O, mix well, add nonionic surfactant triblock copolymer ((EO) 19 (PO) 70 (EO) 19 , P84, the molecular weight is 4400), so that Al / surfactant = 100; the solution was stirred at 40 ° C for 40 h, then heated to 70 ° C and continued to stir for 12 h, at 70 ° C, NH 3 ·H 2 O until pH = 8, aged for 12 h, moved to a stainless steel kettle, and crystallized at 100 ° C for 24 h; the precipitate was filtered and washed until the pH of the filtrate = 7, and the obtained filter cake was dried at 100 ° C under air atmosphere for 24 h -48h, the precursor with boehmite structure is obtained, which is denoted as MSU-S / B; the precursor is put in a tube furnace, fed with air, and the temperature is programmed to 325°C, roasted for 3h, and then programmed to 500°C for 3h , the heating rate is 2°C / min, and the mesoporous alumina is obta...

example 2

[0026] Example 2: Preparation of mesoporous alumina MSU-γ(2)

[0027] Weigh 37.53 grams of Al(NO 3 ) 3 ·6H 2 Add 38.5 grams of water to the metal nitrate of O, mix well, add nonionic surfactant triblock copolymer ((EO) 20 (PO) 70 (EO) 20 , P123, the molecular weight is 5800), so that Al / surfactant=10: the solution was stirred at 50°C for 30h, then heated to 90°C and continued to stir for 6h. At 45°C, see Example 1 for other conditions, the obtained The specific surface area of ​​the product is 335m 2 / g.

example 3

[0028] Example 3: Preparation of mesoporous alumina MSU-γ(3)

[0029] Weigh 37.53 grams of Al(NO 3 ) 3 ·6H 2 Add 38.5 grams of water to the metal nitrate of O, mix well, add nonionic surfactant triblock copolymer ((EO) 19 (PO) 30 (EO) 19 , P65, molecular weight 2900), so that Al / surfactant=60; the solution was stirred at 50°C for 30h, then heated to 70°C and continued to stir for 6h. At 70°C, see Example 1 for other conditions, the obtained product Specific surface is 309m 2 / g.

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 relates to a bore Mn/Al oxide catalyst and its producing method. The catalyst is one of the most effective compounds. Adopting bore alumina as carrier, producing process is simple and convenient for using isometric dipping method. The production has characters of bore construction, high decentralization and high specific surface. It has a remarkable effect to use the catalyst in hydrogenation reaction. In temperature of 350-450deg.C and pressure of 0.1-1.0 Mpa, conversion of methyl benzoate gas phase hydrogenation reaction is over 99 percent through selecting proper reactant ratio and feeding rate.

Description

technical field [0001] The invention relates to the field of mesoporous metal oxides. Specifically, the invention provides a Mn / Al composite oxide catalyst with mesoporous structure, high dispersion and high specific surface area, its preparation method and application. Background technique [0002] Metal oxides are a class of widely used catalysts, which can be applied to both oxidation-reduction catalytic reactions and acid-base catalytic reactions. Generally, oxide catalysts are prepared by impregnation method, co-precipitation method, sol-gel method and mechanical mixing method. However, the catalyst obtained by the general method has defects such as uneven dispersion, low specific surface area, no pore structure and large particles. [0003] With the development of the modern chemical industry, zeolite molecular sieve materials with larger apertures are required. In the early 1970s, Mobil Corporation of the United States synthesized the M41S series of mesoporous molecu...

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
IPC IPC(8): B01J23/34B01J37/02
Inventor 陈爱民徐华龙乐英红华伟明沈伟高滋
Owner FUDAN UNIV
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