Bone supported catalyst for producing succinic acid and preparation method thereof

A technology of supporting catalyst and succinic acid, applied in catalyst activation/preparation, catalyst carrier, carboxylic acid anhydride preparation, etc., can solve the problem of loss of supported metal elements, improve tolerance, solve acid-intolerant, and good yield. Effect

Active Publication Date: 2022-01-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this solution can solve the problem of acid corrosion on the bone carrier, it still cannot solve the problem of the loss of loaded metal elements in the acid environment.

Method used

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  • Bone supported catalyst for producing succinic acid and preparation method thereof
  • Bone supported catalyst for producing succinic acid and preparation method thereof
  • Bone supported catalyst for producing succinic acid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] A preparation method of a bone-loaded catalyst producing succinic acid, the method comprising the steps of:

[0045] Step 1, pretreatment, the fresh bovine bone is dried and ground into powder after being washed with water;

[0046] Step 2, impregnation and adsorption, using 50-100 mL of Pd(OAC)2 acetone solution with a concentration of 0.0222-1.11 mg / mL to impregnate 0.50-1.00 g of pretreated bone powder.

[0047] Step 3, drying and activating, filtering and washing with a solvent, drying at 20-100°C for 6-12h, reducing and activating at 150-400°C in a hydrogen atmosphere for 1-6h to obtain Pd with a catalyst metal loading of 0.1%-5%. Loaded bovine bone catalyst (referred to as Pd / bovine bone).

[0048] Catalyst metal loading 1% Pd / bovine bone preparation method embodiment

[0049] Weigh 1g of animal bone powder and add it to a round bottom flask, and add 100ml of acetone. 22.2 mg of palladium acetate was weighed and dissolved in 15 ml of acetone, and then the aceto...

Embodiment 12-16

[0068] Add 50 mg of the metal catalyst as shown in Table 2 according to the operation of Examples 1-12, and adjust the substrate concentration according to the records in Table 12 (add 0.3 g; 1.2 g; 2.4 g and 3 g of maleic anhydride, water 10 mL, respectively Corresponding substrate concentration is 3wt%; 12wt%; 24wt% and 30wt%), in table 2 corresponding catalytic reaction temperature and catalytic reaction time 0.5MPa H 2 Under the conditions, the maleic anhydride hydrogenation reaction test was carried out in the reactor, and the test analysis was carried out according to the test analysis conditions of Examples 1-12, and the results were recorded in Table 2.

[0069] Table 2, the conditions and results for the preparation of succinic acid by embodiment 13-16

[0070]

[0071] The results in Table 2 show that even if the substrate concentration is 30%, the yield of succinic acid can reach 100% by changing the reaction conditions, indicating that the catalyst has high acid...

Embodiment 17-29

[0073] Add the metal catalyst as shown in table 3 according to the operation of embodiment 1-12, and carry out maleic anhydride hydrogenation reaction test under the corresponding catalytic reaction temperature and catalytic reaction time conditions in table 3, according to embodiment 1-12 Test analysis conditions Carry out test analysis, and record the results in Table 3.

[0074] Table 3, conditions and results for the preparation of succinic acid by embodiment 17-24

[0075]

[0076] The research results in Table 3 show that high temperature is beneficial to the catalyst’s activation of hydrogen and the adsorption of substrates. As the temperature further increases, the catalyst still maintains a high selectivity for succinic acid. In addition, with the increase of metal loading, the rate of catalytic reaction is accelerated. It shows that there are more reactive sites on the catalyst with high metal loading. Elevating the hydrogen pressure increases the mass transfer ...

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Abstract

The invention discloses a bone supported catalyst for producing succinic acid and a preparation method thereof. The catalyst takes animal bones having been subjected to mild treatment as a carrier, wherein active metal elements are supported on the animal bones, the active metal elements are one or more selected from transition metals in the group VIII, IB or IIB, the animal bones can be chicken bones, duck bones, fish bones, sheep bones, cattle bones and pig bones, and the active metal elements can be Pd, Pt, Ru, Rh, Ni, Cu, Co and Fe. Compared with the prior art, the preparation method has the following advantages that the loaded metal has good dispersity on the bone carrier; grease, nitrogen-containing compounds and other components reserved on the animal bones are heated in a reducing environment to form an NC shell layer in situ, and an NC protective layer is formed outside the bone carrier and the loaded metal elements, so the endurance capacity of the catalyst to an acid environment is improved, and metal elements dissolved in the presence of acid can be adopted as catalysts in an acidic environment; and the N can transfer electrons to the loaded metal so as to improve the hydrogenation activity, so excellent effect is provided in the maleic anhydride-to-succinic acid conversion reaction.

Description

technical field [0001] The invention relates to the technical field of catalytic hydrogenation, in particular to a bone-loaded catalyst for preparing succinic acid by catalytic hydrogenation. Background technique [0002] In recent years, with the aggravation of environmental pollution caused by plastic waste, the development of degradable bioplastics has become a common research focus. Among them, polybutylene succinate (PBS) synthesized from succinic acid and 1,4-butanediol is considered to have the best comprehensive performance among many biodegradable plastics, so the global demand for PBS is also increasing. is rising year by year. [0003] As an important raw material of PBS, the production methods of succinic acid mainly include: electrochemical reduction method, biological fermentation method and catalytic hydrogenation method. The electrochemical reduction method is the main technology for the production of succinic acid in my country, but it has problems such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J23/44B01J23/46B01J23/72B01J23/745B01J23/75B01J23/755B01J37/02B01J37/18B01J21/18B01J27/24B01J32/00B01J33/00C07C51/083C07C51/36C07C55/10
CPCB01J23/42B01J23/44B01J23/462B01J23/464B01J23/72B01J23/745B01J23/75B01J23/755B01J37/0201B01J37/18B01J21/18B01J27/24B01J33/00C07C51/083C07C51/36C07C55/10
Inventor 张颖夏滔刘晓东
Owner UNIV OF SCI & TECH OF CHINA
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