Preparation method of porous oxide

Patent metadata

Field	Value
Publication number	US-2023331578-A1
Application number	US-202018026828-A
Country	US
Kind code	A1
Filing date	Sep 17, 2020
Priority date	Sep 17, 2020
Publication date	Oct 19, 2023
Grant date	—

Abstract

A preparation method of a porous oxide is provided, which includes: preparing the porous oxide with a polyester polyol as a raw material. The porous oxide prepared by the preparation method in the present application has characteristics such as uniform and adjustable pore sizes and controllable distribution of mesopores, micropores, and macropores.

First claim

What is claimed is:

1 . A preparation method of a porous oxide, comprising: preparing the porous oxide with a polyester polyol as a raw material.

2 . The preparation method according to claim 1 , comprising: in an atmosphere comprising a gas A, roasting the raw material comprising the polyester polyol to obtain the porous oxide,
wherein the gas A is at least one selected from the group consisting of an air, a nitrogen, an inert gas, and an oxygen.

3 . The preparation method according to claim 2 , wherein the roasting is conducted at 350° C. to 900° C. for 1.5 h to 25 h.

4 . The preparation method according to claim 1 , comprising: subjecting a raw material comprising an oxygen-containing acid ester and a polyol to a transesterification reaction to obtain the polyester polyol.

5 . The preparation method according to claim 4 , wherein the oxygen-containing acid ester 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:
M(OR 1 ) n 1   formula I
O═P(OR 2 ) n 2   formula II
wherein M is a metallic element or a non-metallic element excluding P; R 1 and R 2 each are independently at least one selected from the group consisting of C 1 -C 8 alkyl groups; and n 1 is 2 to 8 and n 2 is 2 to 8.

6 . The preparation method according to claim 5 , wherein M is at least one selected from the group consisting of B, Si, Ge, Al, Ti, Fe, Sn, V, Ga, Zr, Cr, Sb, and W.

7 . The preparation method according to claim 4 , wherein there are no less than two hydroxyl groups in the polyol.

8 . The preparation method according to claim 4 , wherein the polyol comprises at least one selected from the group consisting of ethylene glycol (EG), diethylene glycol (DEG), triethylene glycol (TEG), tetraethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, polyethylene glycol (PEG) 200, PEG 400, PEG 600, PEG 800, 1,4-cyclohexanediol, 1,4-cyclohexanedimethanol (1,4-CHDM), 1,4-benzenedimethanol, glycerol, trimethylolpropane, pentaerythritol, xylitol, and sorbitol.

9 . The preparation method according to claim 4 , wherein the transesterification reaction is conducted for 2 h to 10 h at 80° C. to 180° C. under a stirring in an inert atmosphere.

10 . A porous oxide, wherein the porous oxide is prepared by the preparation method according to claim 1 .

11 . The porous oxide according to claim 10 , wherein the porous oxide has a pore size of 0.4 nm to 80 nm and a specific surface area (SSA) of 150 m 2 /g to 1,500 m 2 /g.

12 . The porous oxide according to claim 10 , wherein the porous oxide comprises a micropore with a pore size of 0.4 nm to 2.0 nm.

13 . The porous oxide according to claim 10 , wherein the porous oxide comprises a mesopore with a pore size of 2.0 nm to 50 nm.

14 . The porous oxide according to claim 10 , wherein the porous oxide comprises a macropore with a pore size of 50 nm to 80 nm.

15 . The porous oxide according to claim 10 , wherein the preparation method of the porous oxide comprises: in an atmosphere comprising a gas A, roasting the raw material comprising the polyester polyol to obtain the porous oxide,
wherein the gas A is at least one selected from the group consisting of an air, a nitrogen, an inert gas, and an oxygen.

16 . The porous oxide according to claim 15 , wherein the roasting in the preparation method of the porous oxide is conducted at 350° C. to 900° C. for 1.5 h to 25 h.

17 . The porous oxide according to claim 10 , wherein the preparation method of the porous oxide comprises: subjecting a raw material comprising an oxygen-containing acid ester and a polyol to a transesterification reaction to obtain the polyester polyol.

18 . The porous oxide according to claim 17 , wherein the oxygen-containing acid ester 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:
M(OR 1 ) n 1   formula I
O═P(OR 2 ) n 2   formula II
wherein M is a metallic element or a non-metallic element excluding P; R 1 and R 2 each are independently at least one selected from the group consisting of C 1 -C 8 alkyl groups; and n 1 is 2 to 8 and n 2 is 2 to 8.

19 . The preparation method according to claim 18 , wherein M is at least one selected from the group consisting of B, Si, Ge, Al, Ti, Fe, Sn, V, Ga, Zr, Cr, Sb, and W.

20 . The preparation method according to claim 17 , wherein there are no less than two hydroxyl groups in the polyol.

Assignees

• Dalian Inst Chem & Physics Cas

Inventors

• Xing Jiacheng
• Yuan Danhua
• Xu Yunpeng
• Liu Zhongmin

Classifications

• C01G23/04 Primary

  Oxides; Hydroxides · CPC title

• C01F7/30 Primary

  Preparation of aluminium oxide or hydroxide by thermal decomposition or by hydrolysis or oxidation of aluminium compounds · CPC title

• C01P2006/16

  Pore diameter · CPC title

• C01P2006/12

  Surface area · CPC title

• C01B13/14

  Methods for preparing oxides or hydroxides in general (particular individual oxides or hydroxides, see the relevant groups of subclasses C01B - C01G or C25B, according to the element combined with the oxygen or hydroxy group) · CPC title