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Technology for converting glycerin into lactic acid by aid of NiCu alloy supported catalysts under mild conditions

A supported catalyst and conversion technology, which is applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of increasing experiment cost, and achieve cost and The effect of high equipment requirements, simple process flow and simple experimental equipment

Inactive Publication Date: 2018-10-16
NORTHEAST DIANLI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the metal catalysts used to catalyze the selective oxidation of glycerol to lactic acid are noble metal catalysts. Although glycerol can be converted into lactic acid with a high yield, it increases the experimental cost and becomes one of the bottlenecks in industrial production.

Method used

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  • Technology for converting glycerin into lactic acid by aid of NiCu alloy supported catalysts under mild conditions
  • Technology for converting glycerin into lactic acid by aid of NiCu alloy supported catalysts under mild conditions
  • Technology for converting glycerin into lactic acid by aid of NiCu alloy supported catalysts under mild conditions

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Embodiment Construction

[0021] The present invention will be further described with specific examples below. The experimental scheme in the present example has no special instructions, and is a conventional method, and the data shown in it do not represent the limitation to the characteristic scope of the present invention simultaneously.

[0022] refer to figure 1 and figure 2 , a kind of technique that utilizes NiCu alloy supported catalyst of the present invention to convert glycerol into lactic acid under mild conditions, comprising the following steps:

[0023] (1) Preparation of support graphite phase carbon nitride of NiCu alloy supported catalyst

[0024] Weigh 10 g of melamine and put it into a crucible, cover the crucible and place it in a muffle furnace, heat up to 580 °C at a rate of 15 °C / min, and calcinate for 4 hours to obtain graphite phase carbon nitride.

[0025] (2) Preparation of NiCu alloy supported catalyst

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Abstract

The invention discloses a technology for converting glycerin into lactic acid by the aid of NiCu alloy supported catalysts under mild conditions. The technology is characterized in that the technologyis implemented under the conditions of the reaction temperatures of 60 DEG C and the reaction time of 10 h; the technology includes steps of synthesizing and characterizing carriers and the NiCu alloy supported catalysts, analyzing heterogeneous catalytic oxidation and heterogeneous catalytic degradation effects of the glycerin and degradation products, and the like. The technology has the advantages that technological processes are scientific and reasonable, technological equipment is simple, the technology is high in degradation efficiency and low in energy consumption, the catalysts are high in comprehensive utilization rate and can be recycled, the difficult problems of high requirements on the cost and equipment for converting glycerin into lactic acid can be solved by the aid of thetechnology, and the like.

Description

technical field [0001] The invention relates to a process for producing lactic acid under mild conditions by using glycerin as a raw material and oxygen as an oxidant and using a NiCu alloy supported catalyst. Background technique [0002] With the rapid development and large-scale production of biodiesel technology, the production of glycerol, which is a by-product of biodiesel, is in excess. Currently, there are many problems in the process of biodiesel production, one of which is how to better utilize the by-product crude glycerol as a resource. About 1 kg of crude glycerol is produced for every 10 kg of biodiesel produced. Therefore, the effective use of glycerin can not only promote the rapid development of the biodiesel industry chain, but also save resources. Pure glycerin, also known as glycerol, is a colorless, viscous, warm-sweet liquid that is miscible in ethanol and water, and insoluble in chemical solvents such as carbon disulfide, chloroform, and ether. How ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J23/755C07C51/23C07C59/08
CPCB01J23/755B01J27/24C07C51/23C07C59/08
Inventor 刘春光张超善张誉腾张兰河李正
Owner NORTHEAST DIANLI UNIVERSITY
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