Method for preparing aromatic hydrocarbons by hydrocracking polymer containing aromatic ring

Patent metadata

Field	Value
Publication number	US-11384036-B2
Application number	US-202117403321-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	Jul 3, 2020
Publication date	Jul 12, 2022
Grant date	Jul 12, 2022

Abstract

Disclosed is a method for preparing aromatic hydrocarbons by hydrocracking a polymer containing aromatic rings, which includes reacting the polymer fragment with hydrogen under the action of a catalyst at a temperature of no more than 350° C.; separating a reaction product to obtain the aromatic hydrocarbons. The catalyst comprises a carrier and an active ingredient supported on the carrier, the active ingredient is at least one selected from Ru, Rh, Pt, Pd, Fe, Ni, Cu and Co, the carrier is at least one selected from metal oxide, phosphate, molecular sieve, SiO2 and sulfonated carbon, the metal oxide is at least one selected from Al2O3, Nb2O5, Nb2O5—Al2O3, Nb2O5—SiO2, TiO2, ZrO2, CeO2 and MoO3; the phosphate is at least one selected from NbOPO4 and ZrOPO4; and the molecule sieve is at least one selected from Nb-SBA-15, Nafion, H-ZSM-5, H-Beta and H-Y.

First claim

What is claimed is:

1. A method for preparing aromatic hydrocarbons by hydrocracking a polymer containing aromatic rings, comprising:
reacting the polymer containing aromatic rings dispersed in a solvent with hydrogen under the action of a catalyst at a temperature of no more than 350° C.;
separating a reaction product to obtain the aromatic hydrocarbons; wherein,
the catalyst comprises a carrier and an active ingredient supported on the carrier;
the active ingredient comprises Ru;
the carrier comprises at least one of metal oxide, phosphate, molecular sieve, SiO2 or sulfonated carbon;
the metal oxide comprises at least one of Al2O3, Nb2O5, Nb2O5-Al2O3, Nb2O5-SiO2, TiO2, ZrO2, CeO2 or MoO3;
the phosphate comprises at least one of NbOPO4 or ZrOPO4; and
the molecule sieve comprises at least one of Nb-SBA-15, Nafion, H-ZSM-5, H-Beta or H-Y.

2. The method according to claim 1 , wherein the polymer containing aromatic rings comprises at least one of polyethylene terephthalate, polyphenylene oxide, polycarbonate, polystyrene, polysulfone, polyphenylene sulfide or polyphenylacetylene.

3. The method according to claim 1 , wherein the polymer containing aromatic rings comprises at least one of polyethylene terephthalate, polycarbonate, polyphenylene oxide or polystyrene.

4. The method according to claim 3 , wherein the active ingredient in the catalyst further comprises at least one of Pt, Pd, Rh, Fe, Ni, Cu or Co.

5. The method according to claim 4 , wherein the carrier comprises at least one of H-ZSM-5, ZrO2, CeO2, Nb2O5, Nb2O5-Al2O3, Nb-SBA-15, Nb2O5-SiO2 or NbOPO4.

6. The method according to claim 4 , wherein the carrier comprises at least one of Nb2O5, Nb2O5-Al2O3, Nb-SBA-15, Nb2O5-SiO2 and NbOPO4.

Assignees

• Univ East China Science & Tech

Inventors

• Wang Yanqin
• Jing Yaxuan
• Guo Yong
• Liu Xiaohui
• Yan Ning

Classifications

• C08J11/16 Primary

  by treatment with inorganic material (C08J11/14 takes precedence) · CPC title

• B01J23/002

  Mixed oxides other than spinels, e.g. perovskite · CPC title

• C07C2529/44

  Noble metals · CPC title

• C07C2523/745

  Iron · CPC title

• C07C2523/72

  Copper · CPC title