Butynediol semi-hydrogenation bimetallic catalyst, preparation method and applications thereof

A bimetallic catalyst and butynediol technology, applied in the field of catalysis, can solve the problems of high hydrogen pressure, poor catalyst stability, aggravated production costs, etc. Effect

Inactive Publication Date: 2019-01-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-metallic catalysts are cheap and easy to obtain, but the reaction conditions are relatively harsh, and the temperature and hydrogen pressure requirements are high. For example, the temperature in industrial production is generally above 150 ° C, and there are many by-products such as green oil, which leads to poor catalyst stability. exacerbated production costs

Method used

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  • Butynediol semi-hydrogenation bimetallic catalyst, preparation method and applications thereof
  • Butynediol semi-hydrogenation bimetallic catalyst, preparation method and applications thereof
  • Butynediol semi-hydrogenation bimetallic catalyst, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Catalyst preparation:

[0028] (1) 0.0505g NiCl 2 ·6H 2 O and 0.3g PVP-K30 were added to the Erlenmeyer flask, and a mixed solvent composed of 82.5mL ultrapure water and 12.5mL ethanol was added to dissolve, stirred for 10min, and NaOH solution was added to adjust the pH value of the mixed solution to between 9-14;

[0029] (2) Add 25.0mL 85wt% hydrazine hydrate and stir for 10min;

[0030] (3) Add 2.5gα-Al 2 o 3 And continue to stir for 10min;

[0031] (4) Transfer the mixture in the Erlenmeyer flask to a hydrothermal synthesis kettle (sealed with tape), stir magnetically at room temperature for 18 hours and then filter, wash the obtained solid with ethanol and ultrapure water, dry it in vacuum at 60°C for 6 hours, and crush it Get solid powder;

[0032] (5) Pipette PdCl 2 Solution 10.6mL (concentration: 0.00118gPd / mL water) in a 250mL Erlenmeyer flask, the solid powder 2.545g prepared in step (4) was added to 10.6mL (concentration: 1.18mgPd / mL water) PdCl 2 Ul...

Embodiment 2

[0037] Take 2.5g SiO 2 Carrier instead of α-Al 2 o 3Carrier, the calcination temperature is adjusted to 500°C, the calcination time is adjusted to 3h, and the rest of the conditions are the same as in Example 1 to prepare the catalyst 0.5%Pd-0.5%Ni / SiO 2 . The evaluation conditions are the same as

[0038] Embodiment 1, the evaluation results are shown in Table 1.

Embodiment 3

[0040] Take 2.5g coconut shell charcoal carrier to replace α-Al 2 o 3 Carrier, all the other steps can make catalyst 0.5%Pd-0.5%Ni / coconut shell charcoal with embodiment 1. Evaluation conditions are the same as in Example 1, and the evaluation results are shown in Table 1.

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Abstract

The invention discloses a butynediol semi-hydrogenation bimetallic catalyst, a preparation method and applications thereof, wherein the catalyst uses a noble metal-non-precious metal as an active component, the general formula can be represented by M1-M2-M2O/S, M1 represents one selected from Pd, Ru, Pt and Au, M2 represents one selected from Ni, Cu, Fe and Co, S represents an inert carrier, and the catalyst comprises, by weight, 0.1-1% of M1, 0.5-10% of M2, and the balance of the carrier. According to the present invention, with the application of the catalyst in the selective semi-hydrogenation reaction of 1,4-butynediol, the reaction conversion rate is up to 100%, and the selectivity of the product butenediol is up to 100%, such that a lot of obstacles in the subsequent product separation are substantially reduced; the reaction can be performed at the normal temperature under the normal pressure, such that the conditions are mild, and the requirements on the reaction equipment and the dander are substantially reduced compared to the previous high temperature and high pressure reaction conditions so as to substantially reduce the equipment cost and the production cost.

Description

technical field [0001] The invention belongs to the technical field of catalysis, and in particular relates to a butynediol semi-hydrogenation bimetallic catalyst and a preparation method and application thereof. Background technique [0002] 1,4-butenediol (B2D) can be widely used in the production of pharmaceutical products vitamin B6 and pesticide endosulfan, etc., and a small amount is used for polymer production, so it has great commercial application value. At present, the way of industrially synthesizing 1,4-butenediol is mainly through the selective semi-hydrogenation of 1,4-butynediol. [0003] 1,4-Butynediol is an upstream product produced based on coal chemical industry and methanol process. It has high added value. Its hydrogenation process is mainly divided into two types of reactions: semi-hydrogenation reaction and complete hydrogenation reaction , some side reactions also occur in the hydrogenation process, such as: hydrogenolysis reaction and isomerization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B01J27/224B01J29/03B01J35/00B01J37/16C07C29/17C07C33/035
CPCB01J23/892B01J27/224B01J29/0333B01J35/0066B01J37/16C07C29/17C07C33/035
Inventor 陈秉辉万晶晶郑进保张蕾樊海燕张诺伟巩建军谢建榕
Owner XIAMEN UNIV
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