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Solid-supported Cu-Ni bimetallic catalyst and method for preparing tetrahydrofurfuryl alcohol by full hydrogenation of furfural catalyzed by catalyst

A bimetallic catalyst, catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc. and other problems, to achieve the effect of good active metal dispersion, poor stability and high activity

Active Publication Date: 2019-03-29
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability of the catalyst in the aqueous phase is poor, and it is difficult to realize large-scale application.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 1. Surface modification of catalyst carrier microsphere silica gel

[0034] In a dry and clean 500mL round bottom flask, add 15g of microsphere silica gel and 11.46g of organosilicon reagent 3-aminopropyltriethoxysilane (KH550) into 350mL of absolute ethanol, stir, and heat to reflux for 24 h. After cooling, the functionalized support was washed with absolute ethanol and dried overnight at 80 °C in vacuum to prepare KH550-modified microsphere silica gel (KH550-modified-SiO 2 ).

[0035] 2. Immobilized bimetallic Cu-Ni-NH 2 -SiO 2 Catalyst preparation

[0036] In a dry and clean 500mL round bottom flask, put 7.20g of KH550-modified-SiO prepared above 2 and 2.4372g Cu(NO 3 ) 2 ·3H 2 O and 0.7925g Ni(NO 3 ) 2 ·6H 2 O was added to 300 mL of absolute ethanol, stirred, and heated to reflux for 20 h. After cooling, the catalyst was washed with absolute ethanol and dried under vacuum at 80 °C overnight to obtain the immobilized i-Cu-Ni--NH 2 -SiO 2 Catalyst, the ma...

experiment example 2

[0044] 1. Surface modification of catalyst carrier microsphere silica gel

[0045] In a dry and clean 500mL round bottom flask, 15g of microsphere silica gel and 13.26g of organosilicon reagent 3-aminopropyl-trimethoxysilane were added to 280mL of anhydrous toluene, stirred, and heated to reflux for 36 h. After cooling, the functionalized support was washed with absolute ethanol, and dried in vacuum at 100 °C overnight to prepare silicone-modified microsphere silica gel.

[0046] 2. Immobilized bimetallic Cu-Ni-NH 2 -SiO 2 Catalyst preparation

[0047] In a dry and clean 500mL round bottom flask, 7.20g of the modified microsphere silica gel SiO prepared above 2 and 1.2896g CuCl 2 2H 2 O and 1.2955g NiCl 2 ·6H 2 O was added to 300 mL of absolute ethanol, stirred, and heated to reflux for 24h. After cooling, the catalyst was washed with absolute ethanol and dried under vacuum at 80 °C overnight to obtain the immobilized i-Cu-Ni-NH 2 -Al 2 o 3 For the catalyst, the mas...

Embodiment 3

[0052] 1. Surface modification of catalyst carrier microsphere silica gel

[0053] In a dry and clean 500mL round bottom flask, add 15g of microsphere silica gel and 16.00g of organosilicon reagent (KH550) into 350mL of absolute ethanol, stir, and heat to reflux for 36 h. After cooling, the functionalized carrier was washed with absolute ethanol and dried overnight at 100°C in vacuum to prepare KH550-modified microsphere silica gel (KH550-modified-SiO 2 ).

[0054] 2. Immobilized bimetallic Cu-Ni-NH 2 -SiO 2 Catalyst preparation

[0055] In a dry and clean 500mL round bottom flask, put 7.20g of KH550-modified-SiO prepared above 2 and 1.2186g Cu(NO 3 ) 2 ·3H 2 O and 2.3774g Ni(NO 3 ) 2 ·6H 2 O was added to 300 mL of absolute ethanol, stirred, and heated to reflux for 20 h. After cooling, the catalyst was washed with absolute ethanol and dried under vacuum at 80 °C overnight to obtain the immobilized i-Cu-Ni-NH 2 -SiO 2 Catalyst, the mass ratio of active metal to su...

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PUM

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Abstract

The invention discloses a solid-supported Cu-Ni bimetallic catalyst and a method for preparing tetrahydrofurfuryl alcohol by full hydrogenation of furfural catalyzed by the catalyst. Coarse pore microsphere silica gel is used as a carrier, and the surface of the carrier is modified with an organosilicone coupling agent with a terminal group having -NH2; reflux is performed on the microsphere silica gel modified by organosilicone together with an active metal Cu source and an active metal Ni source; and the solid-supported Cu-Ni bimetallic catalyst is prepared by complexing coordination of themetals Cu and Ni with the terminal group NH2. When the catalyst is used for catalyzing the furfural to prepare the tetrahydrofurfuryl alcohol by full hydrogenation, the stability of a Cu-Ni double-active metal site in a catalytic reaction as well as the low-temperature hydrogenation activity and selectivity of the Cu-Ni double-active metal site are remarkably improved. The catalyst disclosed by the invention can be continuously used, has universality, and has the advantages of being good in active metal dispersion degree, high in low-temperature hydrogenation activity, easy to recover, good instability, simple in preparation process and high in product yield.

Description

technical field [0001] The invention relates to a solid-supported Cu-Ni bimetallic catalyst and a method for preparing tetrahydrofurfuryl alcohol by catalyzing complete hydrogenation of furfural, and belongs to the technical field of chemical energy. Background technique [0002] Furfural is an important biomass-based platform compound and an important furan compound. The annual production of furfural in the world exceeds 400,000 tons. A series of important fine chemicals and liquid fuels can be produced from furfural, including furfuryl alcohol, tetrahydrofurfuryl alcohol, 2-methylfuran and 2-methyltetrahydrofuran. [0003] Among them, tetrahydrofurfuryl alcohol is an important chemical raw material, which has degradability, low toxicity and stability, and its application range is very wide. It can be used as a relatively green solvent in industry, and can also be used to make lysine, tetrahydrofuran, and pyridine. It can also be used as a raw material for preparing herbic...

Claims

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Application Information

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IPC IPC(8): B01J31/28C07D307/44
CPCB01J31/28C07D307/44
Inventor 谭静静崔静磊赵永祥
Owner SHANXI UNIV
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