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Catalyst for producing 1.4-butynediol and preparation method of catalyst

A butynediol and catalyst technology, which is applied in the field of catalysts for the production of 1,4-butynediol and its preparation, can solve the problems that the catalyst is not suitable for regeneration and recovery, the preparation process of the carrier is complicated, and the catalyst is easy to be lost. Separation, uniform catalyst particles, and high selectivity

Active Publication Date: 2014-06-18
河北瑞克新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the 1970s, a new process using malachite as a catalyst was developed. The catalyst is characterized by small particles and good activity. However, when it reacts in a slurry bed, the catalyst is not wear-resistant and is easy to lose.
However, this type of catalyst has the following disadvantages: the catalyst is not suitable for regeneration and recovery, the mechanical strength is poor, the catalyst is easy to lose during use, and the carrier preparation process is complicated and relatively expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The catalyst is prepared according to the composition of the catalyst (calculated by mass percentage): 40% of carrier nano-silica, 45% of copper oxide, 5% of bismuth oxide, and 10% of silica gel (calculated as silicon dioxide).

[0020] (1) Weigh 105.8g of copper nitrate, dissolve it in 423g of distilled water, and prepare a copper salt solution with a concentration of copper nitrate of 20%, weigh 8.5g of bismuth nitrate, dissolve it in 76.5g of distilled water, and prepare a solution with a concentration of bismuth nitrate of 10% % bismuth salt solution, the two solutions are mixed, and the pH of the solution is adjusted to 1.0 with nitric acid to fully dissolve the bismuth salt;

[0021] (2) Prepare a sufficient amount of sodium carbonate solution with a concentration of 10% for use;

[0022] (3) Weigh 40g of nano-silica carrier and add it to the reactor and mix it with 160% water to prepare a slurry with a carrier mass percentage of 20%;

[0023] (4) Add the salt so...

Embodiment 2

[0028] The catalyst is prepared according to the composition of the catalyst (by mass percentage): 30% of carrier nano-silica, 60% of copper oxide, 5% of bismuth oxide, and 5% of silica gel (calculated by silicon dioxide).

[0029] (1) Weigh 141.0 g of copper nitrate, dissolve it in 564 g of distilled water, and prepare a copper salt solution with a copper nitrate concentration of 20%, weigh 8.5 g of bismuth nitrate, dissolve it in 76.5 g of distilled water, and prepare a bismuth nitrate concentration of 10% % bismuth salt solution, the two solutions are mixed, and the pH of the solution is adjusted to 1.0 with nitric acid to fully dissolve the bismuth salt;

[0030] (2) Prepare a sufficient amount of sodium carbonate solution with a concentration of 10% for use;

[0031] (3) Weigh 30g of nano-silica carrier and add it to the reactor and mix it with 120% water to prepare a slurry with a carrier mass percentage of 20%;

[0032] (4) Add the salt solution prepared in step (1) to...

Embodiment 3

[0037] The catalyst is prepared according to the composition of the catalyst (calculated by mass percentage): 40% of carrier nano-silica, 45% of copper oxide, 5% of bismuth oxide, and 10% of silica gel (calculated as silicon dioxide).

[0038] (1) Weigh 105.8g of copper nitrate, dissolve it in 423g of distilled water, and prepare a copper salt solution with a concentration of copper nitrate of 20%, weigh 8.5g of bismuth nitrate, dissolve it in 76.5g of distilled water, and prepare a solution with a concentration of bismuth nitrate of 10% % bismuth salt solution, the two solutions are mixed, and the pH of the solution is adjusted to 1.0 with nitric acid to fully dissolve the bismuth salt;

[0039] (2) Prepare sufficient potassium bicarbonate solution with a concentration of 20% for later use;

[0040] (3) Weigh 40g of nano-silica carrier and add it to the reactor and mix it with 160% water to prepare a slurry with a carrier mass percentage of 20%;

[0041] (4) Add the salt sol...

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Abstract

The invention discloses a catalyst for producing 1.4-butynediol and a preparation method of the catalyst, belonging to the technical field of load type catalysts for a slurry reactor. The catalyst for producing 1.4-butynediol is characterized in that nanosilicon dioxide is used as a carrier, the nanosilicon dioxide has larger external specific surface area, copper and bismuth are absorbed on the carrier by adopting an impregnation and deposition-precipitation method, so that the catalyst contains 35-65 percent of copper oxide, and then a defined amount of silica sol is added, and through a specific forming method, the granularity of the catalyst is between 1micrometer and 50 micrometers. The prepared catalyst has the characteristics of good activity, high selectivity, high strength, easiness in separation, high particle uniformity, and difficulty in pulverization in a use process; and the preparation method of the catalyst is simple and easy to operate and good in repeatability.

Description

technical field [0001] The invention relates to a catalyst for producing 1,4-butynediol and a preparation method thereof, and belongs to the technical field of supported catalysts for slurry beds. Background technique [0002] 1,4-butanediol (BDO) prepared by catalytic hydrogenation of 1,4-butynediol (BD) is an important organic synthesis intermediate for the production of γ-butyrolactone (GBL), tetrahydrofuran (THF), polybutylene diphthalate (PBT), etc. In recent years, due to the sudden increase in the demand for PBT and other derivatives, the demand for BDO in my country has increased significantly. BD can be synthesized by acetylene of formaldehyde. my country has abundant coal and natural gas resources, and the output of calcium carbide accounts for about one-third of the world's total output of calcium carbide. Therefore, it is unique to produce 1,4-butynediol from non-petroleum route acetylene. conditions and advantages. [0003] In the 1940s, Reppe invented the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/843B01J35/02C07C33/046C07C29/42C07C33/042B01J35/00
Inventor 周焕文邓少亮乔川曲雪琴
Owner 河北瑞克新能源科技有限公司
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