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

Catalyst for preparing n-propanol by hydrogenolysis of glycerol and its preparation and use method

A technology of glycerol hydrogenolysis and catalyst, applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problems of low conversion rate and low selectivity of propanol, Achieving good coordination, overcoming easy deactivation, and excellent conversion rate of glycerol hydrogenolysis

Active Publication Date: 2020-12-01
HUAQIAO UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to overcome the disadvantages of low conversion rate and low selectivity in the preparation of propanol by hydrogenolysis of glycerol, and the shortcomings of requiring glycerol to be purified and dehydrated first, and to provide a green and efficient method for preparing n-propanol by hydrogenolysis of glycerol new way

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 preparing n-propanol by hydrogenolysis of glycerol and its preparation and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Dissolve 0.1mol of silicotungstic acid and 0.03mol of nickel nitrate in 200ml of acetic acid solution, adjust the pH value of the solution to 3.5, react in a constant temperature water bath at 80°C for 0.5 hours, let stand at room temperature for 8 hours, and then evaporate to dryness in an oil bath. Dry overnight at 50°C in a vacuum oven to obtain H 4 ikB 12 powder. Al will be used as carrier 2 o 3 Soak in propanol for 2 hours, filter, and dry in an oven at 110°C for 2 hours to obtain the pretreated Al 2 o 3 carrier. Then the aforementioned heteropolyacid H of 3g 4 ikB 12 Dissolve 4.95g of nickel nitrate in 20ml of distilled water to make a co-impregnation solution, divide it into 5 equal parts, and spray it on 20g of pretreated Al 2 o 3 On the carrier, stir fully after each spraying, and then dry the carrier in a vacuum drying oven at 110°C for 30 minutes, and the impregnating solution is fully loaded. The impregnated catalyst was calcined in a mu...

Embodiment 2

[0021] Example 2: Dissolve 0.1mol of phosphotungstic acid and 0.03mol of zinc nitrate in 200ml of acetic acid solution, adjust the pH value of the solution to 5.5, react in a constant temperature water bath at 80°C for 1 hour, let stand at room temperature for 10 hours, and then evaporate to dryness in an oil bath. Dry overnight at 50°C in a vacuum oven to obtain H 3 wxya 12 powder. TiO will be used as a carrier 2 Soak in propanol for 2 hours, filter, and dry in an oven at 110°C for 3 hours to obtain the pretreated Al 2 o 3 carrier. Then the aforementioned heteropolyacid H of 5.67g was prepared 3 NiPW 12 Dissolve 4.55g of zinc nitrate in 20ml of distilled water to make a co-impregnation solution, divide it into 5 equal parts, and spray it on 20g of pretreated Al2 o 3 On the carrier, stir fully after each spraying, and then dry the carrier in a vacuum drying oven at 110°C for 30 minutes, and the impregnating solution is fully loaded. The impregnated catalyst was calcine...

Embodiment 3

[0023] Example 3: Dissolve 0.1mol silicotungstic acid and 0.03mol zinc nitrate in 200ml acetic acid solution, adopt a method similar to Example 1, use SiO 2 As a carrier, prepare Zn / H 4 wxya 12 / SiO 2 catalyst. The prepared Zn / H 4 wxya 12 / SiO 2 Catalyst 2g, distilled water 70g, glycerin 30g, put into the autoclave, add initial pressure (hydrogen) to 6MPa, stir 700 rpm, heat up to 450 ℃, react for 8 hours, the conversion rate of glycerin is 87.8%, and the n-propyl Alcohol selectivity was 90.9%.

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 preparing normal propyl alcohol through hydrogenolysis of glycerinum and a preparation and using method thereof. The prepared metal-heteropolyacid bifunctional catalyst is suitable for taking water as a solvent in a hydrogenolysis reaction to prepare propyl alcohol, using of volatile, polluted or toxic solvents is avoided, the catalyst is green and environmentally friendly, and meanwhile, the production cost is reduced; meanwhile, the catalyst adapts to the characteristic, that a large amount of moisture is contained, of the by-product glycerinum which isgenerated through a biodiesel device, and overcomes the defect that an existing catalyst is prone to losing activity in a water-containing environment.

Description

technical field [0001] The invention relates to a catalyst for preparing n-propanol by hydrogenolysis of glycerin by-produced in the biodiesel preparation process and a preparation method thereof. Background technique [0002] N-propanol is an important organic raw material and platform compound. Its downstream applications are very extensive. It is mainly used as a solvent or in the synthesis of n-propyl acetate. It can also be used in coating solvents, printing inks, cosmetics and other industries and synthesis Medicines, pesticides, feed additives, synthetic spices, plasticizers and cleaning agents, etc. In recent years, as the consumption of environmentally friendly solvents has increased year by year, the market demand for n-propanol has also shown a continuous growth trend. However, due to the insufficient supply of domestically produced n-propanol, the import volume of n-propanol in my country increased from about 17,000 tons in 2008 to 45,600 tons in 2015, and the i...

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 Patents(China)
IPC IPC(8): B01J23/888B01J27/188B01J37/02B01J37/08B01J37/18C07C31/10C07C29/132
CPCB01J23/888B01J27/188B01J37/0207B01J37/088B01J37/18C07C29/132C07C31/10
Inventor 刘勇军楚素娅张陈洋周伟霞
Owner HUAQIAO UNIVERSITY
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