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Catalyst precursor for synthesizing 1,4-butynediol, catalyst synthesized therefrom and preparation method thereof

A technology of butyne diol and catalyst, which is applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., can solve the problem that copper species cannot be converted into active center alkyne copper complexes, poor dispersion of active components, Easy to lose active components and other problems, to achieve the effect of short reaction time, stable product properties, and concentrated pore size distribution

Active Publication Date: 2019-11-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the lack of support, the dispersion of the active components of these two catalysts is poor, and the effective utilization rate is low; more importantly, the wear of the catalyst is serious, and the active components are easy to lose, resulting in a short catalyst life.
Patent US3920759 reports a supported catalyst with magnesium silicate as a carrier. The carrier increases the dispersion of active components and the wear resistance of the catalyst, but the strong interaction between magnesium silicate and copper species makes it difficult for CuO to be Effective activation, some copper species cannot be converted into active center alkyne copper complexes; on the other hand, this method must first prepare magnesium silicate carrier, and then use impregnation method to load active components, which increases the operation process

Method used

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  • Catalyst precursor for synthesizing 1,4-butynediol, catalyst synthesized therefrom and preparation method thereof
  • Catalyst precursor for synthesizing 1,4-butynediol, catalyst synthesized therefrom and preparation method thereof
  • Catalyst precursor for synthesizing 1,4-butynediol, catalyst synthesized therefrom and preparation method thereof

Examples

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preparation example Construction

[0030]The preparation process of the catalyst of the present invention is as follows: Ammonia and Cu, Bi, Al acid salt mixed solutions are continuously sprayed into the impeller 2 rotating at high speed from the feed ports 4 and 5 provided on the impeller cover respectively, and the slurry generated by the reaction is fed by the impeller 2 Fall into the reactor from all sides, the generated part of the slurry enters the circulation pipe 7 through the circulation pipe inlet 6, and the circulating material is sprayed into the high-speed rotating impeller 2 from the circulating material outlet 6 provided on the impeller cover 3, and the generated slurry is discharged from the reactor The overflow port 8 on the top is continuously discharged, and the discharged slurry is the catalyst precursor, which is spray-dried and roasted to obtain the catalyst, wherein the reaction temperature is controlled at 30-40°C, the residence time is 5-20min, and the pH of the slurry discharged from the...

Embodiment 1

[0033] Take 120.8g Cu(NO 3 ) 2 .3H 2 O, 404g Al(NO 3 ) 3 .9H 2 O and 10.4g Bi(NO 3 ) 3 .5H 2 O prepared into 2000mL metal salt solution. The mixed solution of ammonia gas and metal salt is continuously sprayed into the high-speed rotating impeller 2 from the feed ports 4 and 5 provided on the impeller cover respectively, and the slurry generated by the reaction falls into the reactor from around the impeller 2, and the generated part of the slurry Enter the circulation pipe 7 through the circulation pipe inlet 6, and the circulating material enters the high-speed rotating impeller 2 from the circulating material outlet 6 provided on the impeller cover 3, and the slurry generated by the reaction is continuously discharged from the overflow port 8 at the top of the reactor, and is spray-dried Obtain catalyst precursor a, and roast the precursor to obtain catalyst A 1 . Among them, the volume fraction of ammonia in the mixed gas is 60%, the atomization nozzle of the liq...

Embodiment 2

[0035] Other conditions are the same as in Example 1, except that the diameter of the nozzle is changed to 12 μm, the volume ratio of the circulation rate of the slurry to the feed rate is 2.5:1, and the pH value of the slurry at the overflow port is 6.5, and the sample taken during the reaction for 1 hour is obtained to obtain the catalyst precursor a 2 and Catalyst A 2 .

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Abstract

The invention provides a 1,4-butynediol synthesis catalyst precursor, a catalyst prepared from the precursor, and preparation methods of the precursor and the catalyst. According to the present invention, the precursor is prepared through a reaction of the acid salt mixing solution of Cu, Bi and Al and a raw material gas ammonia by using a specific reactor, wherein the raw materials are beaten into fine liquid droplets and gas bubbles through the blade wheel of the reactor, such that the prepared catalyst precursor has the uniform and centralized particle size distribution so as to easily improve the comprehensive performance of the catalyst; and with the application of the catalyst prepared by roasting the precursor in 1,4-butynediol synthesis, the high activity, the high selectivity andthe high stability can be provided.

Description

technical field [0001] The invention relates to a catalyst precursor for synthesizing 1,4-butynediol, a catalyst synthesized therefrom and a preparation method thereof. The catalyst can be used in the reaction of synthesizing 1,4-butynediol by an alkyne aldehyde method. Background technique [0002] 1,4-Butanediol (BDO) is an important polymer monomer. At present, the technological routes for industrialized production of BDO include the alkyne aldehyde method, butadiene method, propylene oxide method and maleic anhydride method, among which the alkyne aldehyde method is the most important production process in the world. The key of the alkyne aldehyde method is to prepare 1,4-butynediol intermediate, which is produced by the reaction of raw materials acetylene and formaldehyde under the action of a catalyst, and can be obtained by further two-stage hydrogenation at low pressure and high pressure. 1, 4-Butanediol product. As the source reaction for the production of 1,4-but...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/843B01J35/10C07C33/046C07C29/42
Inventor 付秋红张艳侠段日包洪洲
Owner CHINA PETROLEUM & CHEM CORP