Trimetallic catalyst and preparing method thereof and method for recovering diphenol compound

Abstract

A trimetallic catalyst, its preparation method, and a method for recovering bisphenol compounds are disclosed. The trimetallic catalyst includes a support and a first metal, a second metal, and Ni supported on the support, wherein the first metal includes a transition metal other than Ni, Pd, and Pt, the second metal includes Pd or Pt, and the support includes CeO2.

Claims

1. A trimetallic catalyst, comprising a carrier and a first metal M1, a second metal M2 and Ni loaded on the carrier, wherein M1 comprises Fe, Mn, Co or Cu, M2 comprises Pd or Pt, and the carrier comprises CeO2, wherein the trimetallic catalyst is represented by formula (1), and 0 < x ≦ 2, 0 < y ≦ 2, 0 < z ≦ 2, (M1)x(Ni)y(M2)z / CeO2 Formula (1).

2. The trimetallic catalyst as claimed in claim 1, wherein M1 is Fe and M2 is Pd.

3. The trimetallic catalyst as claimed in claim 1, wherein M1 is Fe and M2 is Pt.

4. The trimetallic catalyst as claimed in claim 1, wherein M1 is Mn and M2 is Pd.

5. The trimetallic catalyst as claimed in claim 1, wherein M1 is Co and M2 is Pd.

6. The trimetallic catalyst as claimed in claim 1, wherein M1 is Cu and M2 is Pd.

7. A method for preparing a trimetallic catalyst as described in claim 1, comprising: The compound containing M1, the compound containing M2, and the Ni-containing compound are dissolved in water to obtain a mixed solution; And CeO2, which serves as the carrier, is added to the mixed solution to carry out the reaction, wherein the trimetallic catalyst is represented by formula (1), and x, y, and z represent the number of millimoles of M1, M2, and Ni in the compound containing M1, the compound containing M2, and the Ni-containing compound used per 23.3 mmol of the carrier, and 0 < x ≦ 2, 0 < y ≦ 2, 0 < z ≦ 2, (M1)x(Ni)y(M2)z / CeO2 formula (1).

8. A method for recovering diphenol compounds, comprising: The trimetallic catalyst as described in claim 1 is activated to obtain an activated trimetallic catalyst; The activated trimetallic catalyst was used to degrade alkyl aryl ether compounds to obtain a mixed solution. The mixture solution is filtered to separate the filtrate and the trimetallic catalyst; and the filtrate is distilled to obtain a diphenol compound.

9. The method for recovering bisphenol compounds as described in claim 8, wherein the activation treatment comprises: The trimetallic catalyst was added to a high-pressure reactor, and hydrogen gas was introduced after evacuation. And a first heating treatment is performed to raise the temperature to the activation temperature of the trimetallic catalyst.

10. The method for recovering diphenol compounds as claimed in claim 9, wherein the temperature of the first heat treatment is between 130°C and 300°C.

11. The method for recovering bisphenol compounds as described in claim 8, wherein the degradation treatment comprises: The alkyl ether compound, the activated trimetallic catalyst, the solvent, and the magnet are added to the high-pressure reactor, and hydrogen gas is introduced after evacuation. And a second heating treatment is performed to raise the temperature to the degradation temperature of the alkyl ether compound.

12. The method for recovering diphenol compounds as described in claim 11, wherein the second heat treatment is between 150°C and 240°C.

13. The method for recovering diphenol compounds as described in claim 8, wherein the alkylaryl ether compounds include monomers containing alkylaryl ether groups, oligomers containing alkylaryl ether groups, polymers containing alkylaryl ether groups, or combinations thereof.

14. The method for recovering bisphenol compounds as described in claim 13, wherein the alkylaryl ether-containing polymer comprises a thermosetting polymer or a thermoplastic polymer.

15. The method for recovering diphenol compounds as claimed in claim 8, wherein in the degradation treatment, the amount of the activated trimetallic catalyst added is between 20 wt% and 70 wt%, based on the total amount of the alkyl ether compounds.

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