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A kind of catalyst suitable for succinic acid hydrogenation reaction and its preparation and hydrogenation reaction method

A hydrogenation reaction, succinic acid technology, applied in chemical instruments and methods, preparation of hydroxyl compounds, preparation of organic compounds, etc., can solve the problems of easy reduction of hydrogenation activity, poor stability of Pd catalyst, etc. The particle size is uniform and adjustable, and the preparation method is simple.

Active Publication Date: 2017-06-06
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the Pd catalyst can be well applied to the hydrogenation reaction of succinic acid, due to the poor stability of the Pd catalyst, it is easy to cause agglomerated particles to change after a period of time and the hydrogenation activity is easily reduced. The addition of the second component can easily Good suppression of deactivation of Pd catalysts

Method used

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  • A kind of catalyst suitable for succinic acid hydrogenation reaction and its preparation and hydrogenation reaction method
  • A kind of catalyst suitable for succinic acid hydrogenation reaction and its preparation and hydrogenation reaction method

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Take 0.12g of ferrous chloride, dissolve it in 20mL of water, add 1g of activated carbon to it, adjust the pH to 8 with sodium bicarbonate, stir for 40min, filter, fully wash with water, then dry at 110°C overnight and then reduce it with hydrogen at 300°C for later use. Weigh 5.0g Tween 20 and dissolve it in 30mL water, stir well, take 0.0548g palladium chloride in the flask, add 1mL 15wt% sodium chloride solution to dissolve it, add NaHCO 3 Adjust the pH of the solution to 3.5. The palladium salt solution was mixed with the Tween aqueous solution, and 0.12 g of formaldehyde solution was added thereto, and the orange-yellow solution quickly turned black to obtain a palladium colloidal solution. The above iron-loaded activated carbon was added to the palladium colloidal solution, stirred for 1 h, filtered, and fully washed with water to obtain 5% Fe-3% Pd / C.

Embodiment 2

[0042] Take 0.12g of ferrous chloride and dissolve it in 4mL of water. After dissolving, add 1g of activated carbon weighed into the solution, let it stand for 24 hours, evaporate the liquid, and dry it at 80°C for later use. Weigh 5.0g of hydrogenated rosin glyceride and dissolve it in 30mL of water, stir well, take 0.0548g of palladium chloride in a flask, add 1mL of 15wt% sodium chloride solution to dissolve it, add NaHCO 3 Adjust the pH of the solution to 3. The palladium salt solution was mixed with the hydrogenated rosin glyceride aqueous solution, 0.12 g of ascorbic acid solution was added thereto and stirred at 70° C. for 1 hour, the orange-yellow solution quickly turned black, and a palladium colloidal solution was obtained. The above iron-loaded activated carbon was added to the palladium colloidal solution, stirred at room temperature for 1 h, filtered, and fully washed with water to obtain 5% Fe-3% Pd / C.

Embodiment 3

[0044] Take 0.26g of ferrous chloride, dissolve it in 20mL of water, add 1g of activated carbon to it, adjust the pH to 8 with sodium bicarbonate, stir for 40min, filter and fully wash with water for later use. Weigh 5.3g of Tween 20 and dissolve it in 30mL of water, stir well, take 0.058g of palladium chloride in the flask, add 1mL of 15wt% sodium chloride solution to dissolve it, add NaHCO 3 Adjust the pH of the solution to 4. The palladium salt solution was mixed with the Tween aqueous solution, and 0.13 g of formaldehyde solution was added thereto, and the orange-yellow solution quickly turned black to obtain a palladium colloidal solution. The above iron-loaded activated carbon was added into the palladium colloidal solution, stirred for 1 h, filtered, and fully washed with water to obtain 10% Fe-3% Pd / C.

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Abstract

A Pd-M double metal or multi-metal catalyst and application thereof to succinic acid hydrogenation. Succinic acid is subjected to hydrogenation reaction for preparing gamma-butyrolactone, tetrahydrofuran, 1,4-butanediol; and the ratio of reaction products can be adjusted according to different components of the catalyst. The catalyst comprises 0.05-5wt% of an active component Pd and 0.1-30 wt% of a second metal M. The preparation method mainly comprises the following steps: preparing a stable nano palladium colloid solution by a chemical reduction process; introducing the second metal component M into the carrier, adsorbing the palladium colloid by the carrier, washing and drying to obtain the high-dispersion Pd-M nano catalyst.

Description

technical field [0001] The invention relates to succinic acid hydrogenation reaction, in particular to a catalyst suitable for succinic acid hydrogenation reaction and its preparation and hydrogenation reaction method. Background technique [0002] γ-butyrolactone, tetrahydrofuran, and 1,4-butanediol are very important chemical raw materials, and they still mainly come from fossil fuels. The non-renewability of fossil fuels and the large amount of environmental pollution caused by their utilization make people have to look for An alternative resource. Succinic acid can produce γ-butyrolactone, tetrahydrofuran, and 1,4-butanediol through one-step hydrogenation reaction, but the traditional production of succinic acid mainly relies on petrochemical technology. With the rapid development of bio-fermentation technology, the production of bio-based succinic acid will increase substantially in the future, and the potential for producing high value-added chemicals from succinic ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/62C07D307/33C07D307/08C07C31/20C07C29/149
CPCY02P20/52
Inventor 牟新东刘晓然王喜成姚胜昔彭功名姜义军郭星翠周剑伟
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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