Friction material
US-9534650-B2 · Jan 3, 2017 · US
Method for preparation of 2,5-dimethylphenol by selective catalytic conversion of lignin
US11524928B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11524928-B2 |
| Application number | US-202117242001-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 27, 2021 |
| Priority date | Mar 16, 2021 |
| Publication date | Dec 13, 2022 |
| Grant date | Dec 13, 2022 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The present disclosure discloses a method for preparing 2,5-dimethylphenol by selective catalytic conversion of lignin, relates to the technical field of chemistry, and includes the following steps: mixing lignin, a catalyst, and ethanol, and then carrying out a catalytic conversion reaction of lignin under the gaseous supercritical conditions of ethanol; and cooling the reaction product by quenching after the completion of reaction, and then subjecting it to separation and extraction to obtain 2,5-dimethylphenol. The catalyst comprises a modified sepiolite carrier, an active metal Mo, and auxiliary agents Zr and Fe. The process of the present disclosure is simple, and the prepared catalyst is a solid catalyst, which avoids problems of difficult recovery, serious environmental pollution and equipment corrosion caused by the use of homogeneous organic acid-base catalysts.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for preparing 2,5-dimethylphenol by selective catalytic conversion of lignin, comprising the following steps: mixing lignin, a catalyst, and ethanol, and then carrying out a catalytic conversion reaction of lignin under the gaseous supercritical conditions of ethanol; and cooling the reaction product by quenching after the completion of reaction, followed by separation and extraction to obtain 2,5-dimethylphenol; the catalyst comprises a modifie…
Assignees
Inventors
Classifications
Cross-Sectional Technologies · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- B01J37/10Primary
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11524928B2 cover?
- The present disclosure discloses a method for preparing 2,5-dimethylphenol by selective catalytic conversion of lignin, relates to the technical field of chemistry, and includes the following steps: mixing lignin, a catalyst, and ethanol, and then carrying out a catalytic conversion reaction of lignin under the gaseous supercritical conditions of ethanol; and cooling the reaction product by que…
- Who is the assignee on this patent?
- Univ Anhui Sci & Technology
- What technology area does this patent fall under?
- Primary CPC classification B01J37/10. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 13 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).