Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modified magnalium composite oxide catalyst for acetone condensation as well as preparation method and application thereof

A technology of composite oxides and catalysts, applied in the direction of metal/metal oxide/metal hydroxide catalysts, carbon-based compound preparation, organic compound preparation, etc., can solve the problems of isophorone to be improved and achieve orderly Good degree of crystallinity, high selectivity effect

Active Publication Date: 2015-09-02
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing magnesium-aluminum composite oxide catalysts still need to be improved in the conversion rate of acetone and the selectivity to isophorone

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
  • Modified magnalium composite oxide catalyst for acetone condensation as well as preparation method and application thereof
  • Modified magnalium composite oxide catalyst for acetone condensation as well as preparation method and application thereof
  • Modified magnalium composite oxide catalyst for acetone condensation as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Alkaline solution preparation: Weigh 35.4g NaOH and 20.1g NaOH respectively 2 CO 3 Put it into a beaker, add an appropriate amount of double distilled water, stir to make NaOH, Na 2 CO 3 Dissolve completely and prepare 350ml alkali solution.

[0038] 2. Salt solution preparation: weigh 72.1g Mg(NO 3 ) 2 ·6H 2 O, 52.8g Al(NO 3 ) 3 9H 2 O, 24.5gCe(NO 3 ) 3 ·6H 2 O and 36.6g La(NO 3 ) 3 ·6H 2 O crystals were put into a beaker, an appropriate amount of twice distilled water was added, and stirred to completely dissolve the crystals, and a 350ml salt solution was prepared.

[0039] 3. Hydrotalcite preparation: put the flask into a constant temperature water bath and fix it on an iron stand, and add 300ml of deionized water into the flask. Adjust the temperature of the constant temperature water bath to 60°C, and start the stirrer. The salt solution and the alkali solution are fed into the flask in parallel by adopting a double-drop feeding method, and the ...

Embodiment 2

[0042] 1. Alkaline solution preparation: Weigh 34.8g NaOH and 20.1g NaOH respectively 2 CO 2 Put it into a beaker, add an appropriate amount of double distilled water, stir to make NaOH, Na 2 CO 3 Dissolve completely and prepare 350ml alkali solution.

[0043] 2. Salt solution preparation: weigh 72.4g Mg(NO 3 ) 2 ·6H 2 O, 52.3g Al(NO 3 ) 3 9H 2 O, 21.7g Y(NO 3 ) 3 ·6H 2 O and 24.2g Ce(NO 3 ) 3 ·6H 2 O crystals were put into a beaker, an appropriate amount of twice distilled water was added, and stirred to completely dissolve the crystals, and a 350ml salt solution was prepared.

[0044] 3. Hydrotalcite preparation: put the flask into a constant temperature water bath and fix it on an iron stand, and add 300ml of deionized water into the flask. Adjust the temperature of the constant temperature water bath to 75°C, and start the stirrer. The salt solution and the alkali solution are fed into the flask in parallel by adopting a double-drop feeding method, and the ...

Embodiment 3

[0048] 1. Alkaline solution preparation: Weigh 36.4g NaOH and 20.7g NaOH respectively 2 CO 3 Put it into a beaker, add an appropriate amount of double distilled water, stir to make NaOH, Na 2 CO 3 Dissolve completely and prepare 350ml alkali solution.

[0049] 2. Salt solution preparation: weigh 72.1g Mg(NO 3 ) 2 ·6H 2 O, 52.8g Al(NO 3 ) 3 9H 2 O, 24.5gCe(NO 3 ) 3 ·6H 2 O and 36.6g La(NO 3 ) 3 ·6H 2 O crystals were put into a beaker, an appropriate amount of twice distilled water was added, and stirred to completely dissolve the crystals, and a 350ml salt solution was prepared.

[0050] 3. Hydrotalcite preparation: put the flask into a constant temperature water bath and fix it on an iron stand, and add 300ml of deionized water into the flask. Adjust the temperature of the constant temperature water bath to 65°C, and start the stirrer. The salt solution and the alkali solution are fed into the flask in parallel by adopting a double-drop feeding method, and the pH...

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

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
pore size distributionaaaaaaaaaa
Login to View More

Abstract

The invention discloses a modified magnalium composite oxide catalyst for acetone condensation as well as a preparation method and application thereof and belongs to the technical field of acetone condensation. The modified magnalium composite oxide catalyst is prepared through the following steps: preparing modified hydrotalcite from a precipitant and a metal salt solution containing rare earth elements by virtue of a dual-drop cocurrent-flow coprecipitation method, and then calcinating. According to the catalyst, a magnalium composite oxide is modified by use of rare earth components (La and Ce or Y and Ce), so that the surface acidic and basic density and strength ratio of the catalyst can be effectively regulated, and thus the acetone self-condensation reaction catalysis activity and isophorone selectivity of the catalyst are improved. The modified catalyst is capable of achieving the acetone conversion per pass of 35-42% and the isophorone selectivity of 72-76%.

Description

technical field [0001] The invention relates to the technical field of acetone condensation, in particular to a modified magnesium-aluminum composite oxide catalyst for acetone condensation and its preparation method and application. Background technique [0002] Isophorone (CAS RN 78-59-1, Isophorone), Chinese aliases: Isophorone, 3,5,5-trimethyl-2-cyclohexenone, is the first generation derivative in acetone chemistry substance, its chemical name is 3,5,5-trimethyl-2-cyclohexen-1-one, and its molecular formula is C 9 h 14 O, the relative molecular mass is 138.21, the appearance is colorless or water white to yellow low volatility liquid, flammable, with mint or camphor-like smell. Isophorone is an excellent high-boiling solvent with good solubility, dispersibility and leveling property. It is slightly soluble in water, soluble in alcohol, ether and acetone, and easily soluble in most organic solvents. It is the preferred choice in the fine chemical industry As an importa...

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): B01J21/10B01J23/10B01J35/10C07C49/603C07C45/74
Inventor 王芳珠柴永明牟庆平刘晨光姚刚栾波吕灵灵李丹盈
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com