Method for preparing a supported carbon catalyst, supported carbon catalyst and use thereof

Patent metadata

Field	Value
Publication number	US-11305263-B2
Application number	US-201916643953-A
Country	US
Kind code	B2
Filing date	Apr 30, 2019
Priority date	Apr 30, 2019
Publication date	Apr 19, 2022
Grant date	Apr 19, 2022

Abstract

A method for preparing a supported carbon catalyst, the method includes at least the following steps: contacting a gas containing an organic silicon source with a silicon oxide-based material to obtain a precursor; contacting the precursor with a gas containing an organic carbon source to obtain the supported carbon catalyst. The temperature and energy consumption of the chemical vapor deposition of heteroatom-containing carbon material on silica-based materials can be greatly reduced in this method, and the cost of the catalyst can be effectively reduced.

First claim

What is claimed is:

1. A method for preparing a supported carbon catalyst, wherein the method comprises:
Step (1): contacting a gas containing an organic silicon source with a silicon oxide-based material to obtain a precursor;
Step (2): contacting the precursor with a gas containing an organic carbon source to obtain the supported carbon catalyst, wherein the precursor obtained in step (1) contacts with the gas containing the organic carbon source at a contact temperature in a range from 500° C. to 1000° C. for 0.1 hour to 10 hours.

2. The method according to claim 1 , wherein the organic silicon source in the step (1) is at least one selected from the group consisting of a compound with a chemical formula shown in formula I and a compound with a chemical formula shown in formula II:

wherein R 1 , R 2 , R 3 and R 4 are each independently selected from the group consisting of hydrogen, a C 1 to C 12 hydrocarbyl group, a C 1 to C 12 substituted hydrocarbyl group, a C 1 to C 5 hydrocarbyloxy group, a C 1 to C 5 alkylacyloxy group, halogen and amino; and
at least one of R 1 , R 2 , R 3 and R 4 is a C 1 to C 12 hydrocarbyl group or a C 1 to C 12 substituted hydrocarbyl group; and
at least one of R 1 , R 2 , R 3 and R 4 is hydrogen, a C 1 to C 5 hydrocarbyloxy group, a C 1 to C 5 alkylacyloxy, halogen or amino;

wherein A is O or NH;
R 5 , R 6 , R 7 , R 8 , R 9 and R 10 are each independently selected from the group consisting of hydrogen, a C 1 to C 12 hydrocarbyl group, a C 1 to C 12 substituted hydrocarbyl group, a C 1 to C 5 hydrocarbyloxy group, a C 1 to C 5 alkylacyloxy group, halogen or amino; and
at least one of R 5 , R 6 and R 7 is a C 1 to C 12 hydrocarbyl group or a C 1 to C 12 substituted hydrocarbyl group; and at least one of R 8 , R 9 and R 10 is a C 1 to C 12 hydrocarbyl group or a C 1 to C 12 substituted hydrocarbyl group.

3. The method according to claim 2 , wherein a substituent is contained in the substituted hydrocarbyl group; the substituent is at least one selected from the group consisting of halogen, amino, epoxyethyl, sulfydryl, cyano, isocyanate group, and ethylenediamine.

4. The method according to claim 1 , wherein the organic silicon source in step (1) is least one selected from the group consisting of dichlorodimethylsilane, hexamethyldisiloxane, trimethylchlorosilane, phenyltrichlorosilane and dimethoxydimethylsilane.

5. The method according to claim 1 , wherein the gas containing the organic silicon source in step (1) contains or does not contain an inactive gas;
the inactive gas is at least one selected from the group consisting of nitrogen, argon gas and helium gas.

6. The method according to claim 1 , wherein the silicon oxide-based material in step (1) is porous silicon dioxide.

7. The method according to claim 1 , wherein the gas containing the organic silicon source in step (1) contacts with the silicon oxide-based material at a contact temperature in a range from 100° C. to 500° C. for 0.1 hour to 10 hours.

8. The method according to claim 1 , wherein the gas containing the organic silicon source in step (1) contacts with the silicon oxide-based material at a contact temperature in a range from 200° C. to 450° C. for 0.2 hour to 4 hours.

9. The method according to claim 1 , wherein the mass percentage of the silicon oxide-based material in the precursor is in a range from 80 wt % to 98 wt %.

10. The method according to claim 1 , wherein the mass percentage of the silicon oxide-based material in the precursor is in a range from 90 wt % to 97 wt %.

11. The method according to claim 1 , wherein the organic carbon source in the step (1) is at least one of a C 1 to C 18 organic compound;
the organic compound contains at least one selected from the group consisting of nitrogen, oxygen, boron, phosphorus, and sulfur.

12. The method according to claim 1 , wherein the organic carbon source in step (2) is at least one selected from the group consisting of nitrile compounds, pyridine compounds, organic phosphine compounds, organoboron compounds, thiophene compounds, phenol compounds, and alcohol compounds.

13. The method according to claim 1 , wherein the gas containing the organic carbon source in step (2) contains an inactive gas;
the inactive gas is at least one selected from the group consisting of nitrogen, argon gas and helium gas.

14. The method according to claim 1 , wherein the precursor in step (2) contacts with the gas containing the organic carbon source at a contact temperature in a range from 600° C. to 900° C. for 0.1 hour to 4 hours.

15. The method according to claim 1 , wherein the mass percentage of the silicon oxide-based material in the supported carbon catalyst is in a range from 60 wt % to 95 wt %.

16. The method according to claim 1 , wherein the mass percentage of the silicon oxide-based material in the supported carbon catalyst is in a range from 75 wt % to 93 wt %.

Assignees

• Dalian Inst Chem & Physics Cas
• Formosa Plastics Corp

Inventors

• Xu Jinming
• Fan Sisi
• Huang Yanqiang
• Zhang Tao
• Huang Chin Lien
• Hung Wan Tun
• Chen yu cheng
• Wu Chien Hui
• Cheng Ya Wen
• Wen Ming Hsien
• Chang Chao Chin
• Huang Tsao Cheng

Classifications

• B01J37/349

  making use of flames, plasmas or lasers · CPC title

• B01J37/0209

  involving a reaction between the support and a fluid · CPC title

• C07C17/08

  to unsaturated hydrocarbons · CPC title

• C07C17/07

  by addition of hydrogen halides · CPC title

• C07C17/25

  by splitting-off hydrogen halides from halogenated hydrocarbons · CPC title