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Method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol

A technology of methyl furan and pentanediol, which is applied in chemical instruments and methods, preparation of organic compounds, catalysts for physical/chemical processes, etc., can solve the problems of availability limiting practical application, etc., and achieve excellent activity and selectivity, Mild reaction conditions and environment-friendly effects

Active Publication Date: 2022-02-01
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, the availability and current price of levulinate or γ-valerolactone greatly limit their practical application

Method used

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  • Method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol
  • Method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol
  • Method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol

Examples

Experimental program
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Effect test

Embodiment 1

[0070] (1) Add 2 g of multi-walled carbon nanotubes and 200 mL of nitric acid into a round bottom flask, install the round bottom flask in an oil bath, stir at 120° C., condense and reflux for 4 hours. After the purification, quickly add deionized water to lower the temperature and dilute the acid concentration, repeatedly wash and filter the carbon nanotubes until the final filtrate pH=7, and then dry in an oven at 70°C for 12 hours. Take out the dried carbon nanotubes, put them into a mortar for grinding, and sieve through a 100-mesh standard sieve to make a carbon nanotube carrier;

[0071] (2) The precursor of platinum can be its metal precursor salt solution, here we take tetraamine platinum nitrate as an example, take tetraamine platinum nitrate (Pt(NH 4 ) 4 (NO 3 ) 2 ) 5g was dissolved in 100mL of deionized water, and was configured as a platinum precursor solution (Pt: 25.19mg / mL) for subsequent use; nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 4.9547g was di...

Embodiment 2

[0075] (1) Add 2 g of multi-walled carbon nanotubes and 200 mL of nitric acid into a round bottom flask, install the round bottom flask in an oil bath, stir at 120° C., condense and reflux for 4 hours. After the purification, quickly add deionized water to lower the temperature and dilute the acid concentration, repeatedly wash and filter the carbon nanotubes until the final filtrate pH=7, and then dry in an oven at 70°C for 12 hours. Take out the dried carbon nanotubes, put them into a mortar for grinding, and sieve through a 100-mesh standard sieve to make a carbon nanotube carrier;

[0076] (2) The precursor of platinum can be its metal precursor salt solution, here we take chloroplatinic acid as an example, get chloroplatinic acid (H 2 PtCl 6 ·6H 2 O, Pt≥37.5%) 1g is dissolved in 50mL of deionized water, and is configured as a platinum precursor solution (Pt: 7.5mg / mL) for subsequent use; take nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 4.9547g was dissolved in 1...

Embodiment 3

[0080] (1) Add 2 g of multi-walled carbon nanotubes and 200 mL of nitric acid into a round bottom flask, install the round bottom flask in an oil bath, stir at 120° C., condense and reflux for 4 hours. After the purification, quickly add deionized water to lower the temperature and dilute the acid concentration, repeatedly wash and filter the carbon nanotubes until the final filtrate pH=7, and then dry in an oven at 70°C for 12 hours. Take out the dried carbon nanotubes, put them into a mortar for grinding, and sieve through a 100-mesh standard sieve to make a carbon nanotube carrier;

[0081] (2) The precursor of platinum can be its metal precursor salt solution, here we take sodium tetrachloroplatinate (II) as an example, take Na 2 PtCl 4 1g was dissolved in 50mL of deionized water, and was configured as a platinum precursor solution (Pt: 10.19mg / mL) for subsequent use; nickel nitrate hexahydrate (Ni(NO 3 ) 2 ·6H 2 O) 4.9547g was dissolved in 100mL of deionized water, a...

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Abstract

The invention provides a method for catalyzing selective conversion of 2-methylfuran into 1,4-pentanediol. According to the application, the 2-methylfuran is used as a raw material, and a supported platinum-based bimetallic catalyst is used for catalyzing the hydro-conversion of the 2-methylfuran, wherein the PtNi5 / MWNT catalyst is used for carrying out one-pot hydrogenation on the 2-methylfuran in an ethanol / H2O (with a volume ratio of 1.5: 2.0) solvent under the conditions of 2 MPa H2 and 120 DEG C, the conversion rate of 2-methylfuran is 98%, the yield of the 1,4-pentanediol is 69%, and the yield is superior to the yield of most catalysts reported at present. The preparation method is simple in process, acid and alkaline auxiliaries do not need to be added, raw materials are renewable, the catalyst has high activity and stability, reaction conditions are milder, energy consumption is reduced to a certain extent, the catalyst is more environmentally friendly, and the energy problem which the globe faces nowadays can be partially relieved. Therefore, the method has wide application potential in industrial production.

Description

technical field [0001] The invention belongs to the field of biomass energy catalysis, and relates to a method for preparing fine chemical 1,4-pentanediol by catalyzing the hydrogenation of biomass derivative 2-methylfuran, in particular to a multi-active component catalyst, the catalyst It can effectively catalyze the selective hydrogenolysis of 2-methylfuran to prepare 1,4-pentanediol. Background technique [0002] In the energy and chemical industries, fossil carbon sources are increasingly replaced by renewable carbonaceous materials to reduce the emission of the greenhouse gas carbon dioxide and thus slow down global warming. Lignocellulosic biomass is an abundant and renewable carbon resource that is expected to replace traditional nonrenewable fossil resources in the production of chemicals and fuels. Lignin, cellulose, and hemicellulose are derived from lignocellulosic biomass, which can be depolymerized into various platform compounds that can be further upgraded t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/17C07C31/20B01J23/89
CPCC07C29/172B01J23/892C07C31/20Y02P20/584
Inventor 王川吴敏殷超群叶兰欣陈凯琴徐思远张钦
Owner NANJING UNIV OF TECH
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