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Catalyst for fluorination

A catalyst, fluorination technology, applied in physical/chemical process catalysts, organic chemistry, organic chemistry methods, etc., can solve problems such as catalysts that cannot meet the requirements

Inactive Publication Date: 2005-10-12
NAT INST OF ADVANCED IND SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these proposals are still unsatisfactory catalysts from the viewpoint of metal support for further activation of the fluorination reaction.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (Containing SbF in porous chromium fluoride 5 The structure of the catalyst SbF 5 / PCrF preparation)

[0065] in N 2 To 10g tablet-like porous chromium fluoride (PCrF) under the ambient atmosphere (PCrF prepared by the method described in No. JP2003-303078, its surface area is 187m 2 / g), slowly drop 10g of SbCl 5 . In this way, the SbCl-containing 5 PCrF Tablets.

[0066] in circulation N 2 After drying the tablet at 100°C, use N 2 Diluted anhydrous HF (AHF) (N 2 / AHF=1 / 1) at 100°C, then increase the temperature and the concentration of AHF, and finally use pure AHF at 200°C. By blowing N 2 gas to remove the last remaining HF, and the catalyst A SbF was prepared 5 / PCrF. SbF 5 The results of differential scanning calorimetry (DSC) for / PCrF showed that there was no endothermic or exothermic change up to about 500°C, ie, until about 500°C. C is still stable.

Embodiment 2

[0068] (using SbF 5 Synthesis of 1-chloro-3,3,3-trifluoropropene / PCrF catalyst)

[0069] Add 10ml of Catalyst A to the reactor, and supply the mixture of 1,1,1,3,3-pentachloropropane (PCPAN) (flow: 0.15g / min) and anhydrous HF after vaporization, at 305°C react. After the reaction product was washed with water and dried with soda lime, the structure was confirmed by NMR, and trans-1-chloro-3,3,3-trifluoropropene and cis-1-chloro-3,3,3-trifluoropropene were generated. Fluoropropene yields were 89.8% and 9.0%, respectively.

Embodiment 3

[0071] In addition to using 5.4 g of SbCl 5 Catalyst B was obtained in the same manner as in Example 1 except that.

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PUM

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Abstract

To produce a catalyst having an enhanced fluorination activity in the catalyst used for a fluorination reaction using hydrogen fluoride as a fluorinating agent, and to provide a fluorination method using the catalyst. This catalyst for the fluorination reaction is characterized in that a porous support comprising calcium fluoride or magnesium fluoride is carried with an antimony halogenated substance represented by formula (1): SbFnCl(5-n) (wherein (n) represents a number of 0-5).

Description

[technical field] [0001] The present invention relates to a catalyst for fluorination reaction and a method for preparing fluorinated hydrocarbons using the catalyst. [Background technique] [0002] The metal fluoride catalyst for halogen exchange is a highly efficient catalyst in the gas phase fluorination process. Improving the performance of this catalyst by increasing the surface area or adding auxiliary metals is an important method performed so far. EP 0514923 (1998) discloses a method for improving the catalytic performance of chromium-based catalysts by performing high superficialization. In addition, EP 0502605 (1992) or J. Fluorine Chem., 111 (2001) 193 and EP 0801980 (1997) reported that the catalytic activity was improved by adding auxiliary metals such as Zn, Co, Ti, and Ni to the catalyst. [0003] For the synthesis of organofluorine compounds, antimony pentafluoride (SbF 5 ) treatment of organohalogen derivatives is a typical example of the Swart reaction. ...

Claims

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Application Information

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IPC IPC(8): B01J27/132B01J27/08B01J27/125B01J27/138B01J35/10C07B61/00C07C17/20C07C19/08C07C19/10C07C21/18
Inventor 权恒道杨会娥田村正则关屋章
Owner NAT INST OF ADVANCED IND SCI & TECH
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