Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing antimony pentafluoride

A technology of antimony pentafluoride and fluorine gas, applied in chemical instruments and methods, inorganic chemistry, antimony compounds, etc., can solve the problems of high melting point, difficult to purify products, high impurity content of finished products, etc., and achieve easy control and reliable product quality , the effect of high yield

Active Publication Date: 2011-02-09
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in fact, the method for preparing antimony pentafluoride is not as simple as the above reaction formula. During the reaction, some intermediate fluorides are often generated, and there may also be adducts. These adducts are very stable and have relatively High melting point makes it difficult to purify the product, resulting in high impurity content in the finished product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing antimony pentafluoride
  • Method for preparing antimony pentafluoride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] First, purify the reactor 4, add 25 kg of antimony trioxide with a purity of 98.5% into the reactor 4; close the reactor, evacuate to -0.08MPa, and then preheat the reactor 4 to 100°C. Pass the purified fluorine gas in the buffer tank 3 into the reactor 4 .

[0047] During the reaction process, the temperature in the reactor was kept at 150°C. When the temperature of the reactor tended to drop significantly, the flow of fluorine gas was stopped to check that the reaction was terminated, and a liquid antimony pentafluoride crude product containing light impurities was obtained.

[0048] The liquid antimony pentafluoride crude product is pumped into the rectification tower for collection by means of negative pressure. First, the rectification tower is heated and the temperature is controlled at 100°C. As the temperature in the rectification tower rises, the liquid antimony pentafluoride begins to distill, vaporize and rise. The gas phase in the rectification tower rises ...

Embodiment 2

[0051] First, purify the reactor 4, add 25 kg of antimony trioxide with a purity of 98.5% into the reactor 4; close the reactor, evacuate to -0.08MPa, and then preheat the reactor 4 to 150°C. Pass the purified fluorine gas in the buffer tank 3 into the reactor 4 .

[0052]During the reaction process, the temperature in the reactor was kept at 200°C. When the temperature of the reactor tended to drop significantly, the flow of fluorine gas was stopped to check that the reaction was terminated, and a liquid antimony pentafluoride crude product containing light impurities was obtained.

[0053] The liquid antimony pentafluoride crude product is pumped into the rectification tower for collection by means of negative pressure. First, the rectification tower is heated and the temperature is controlled at 125°C. As the temperature in the rectification tower rises, the liquid antimony pentafluoride begins to distill, vaporize and rise. The gas phase in the rectification tower rises t...

Embodiment 3

[0056] First, purify the reactor 4, add 25 kg of antimony trioxide with a purity of 98.5% into the reactor 4; close the reactor, evacuate to -0.08MPa, and then preheat the reactor 4 to 200°C. Pass the purified fluorine gas in the buffer tank 3 into the reactor 4 .

[0057] During the reaction process, the temperature in the reactor was kept at 250°C. When the temperature of the reactor tended to drop significantly, the fluorine gas flow was stopped to check that the reaction was terminated, and a liquid antimony pentafluoride crude product containing light impurities was obtained.

[0058] The liquid antimony pentafluoride crude product is pumped into the rectification tower for collection by means of negative pressure. First, the rectification tower is heated and the temperature is controlled at 150°C. As the temperature in the rectification tower rises, the liquid antimony pentafluoride begins to distill, vaporize and rise. The gas phase in the rectification tower rises to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pressureaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for preparing antimony pentafluoride, and the method comprises the following steps: firstly purifying raw material fluorine gas, removing high boiling point gas impurities which can not be condensed in the fluorine gas; carrying out the synthesis reaction on the fluorine gas and antimony trioxide for generating a liquid antimony pentafluoride crude product; further gasifying and condensing the liquid antimony pentafluoride crude product by the distillation process and removing the gas impurities in the crude product to obtain a high-purity liquid antimony pentafluoride product. The method has simple equipment, convenient operation, safe equipment operation, stable product quality and high purity of being greater than 98.5 percent.

Description

technical field [0001] The invention belongs to a method for preparing antimony pentafluoride, in particular to a method for preparing antimony pentafluoride by using fluorine gas and antimony as raw materials and carrying out a synthesis reaction in a negative pressure vessel. Background technique [0002] Antimony pentafluoride is a high-energy fluorinating agent widely used in anticancer drugs in the medical pharmaceutical industry. There are many methods for preparing antimony pentafluoride at present, and the commonly used preparation methods are as follows: [0003] One method is: fluorine gas (F 2 ) and antimony trifluoride (SbF 3 ) react to form antimony pentafluoride (SbF 5 ), the chemical reaction formula is: [0004] f 2 +SbF 3 →SbF 5 [0005] Another method is: the reaction of hydrogen fluoride and antimony pentachloride to prepare antimony pentafluoride. The method is to mix hydrogen fluoride gas (HF) and antimony pentachloride (SbCl 5 ) mixture was ref...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G30/00
Inventor 崔学文贺邓仝庆汤进军崔建起董国芳
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com