The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 04, 2023
Filed:
Oct. 21, 2022
South China University of Technology, Guangzhou, CN;
Guangdong University of Technology, Guangzhou, CN;
Xueqing Qiu, Guangzhou, CN;
Dongjie Yang, Guangzhou, CN;
Hongming Lou, Guangzhou, CN;
Yanlin Qin, Guangzhou, CN;
Yong Qian, Guangzhou, CN;
Jinhao Huang, Guangzhou, CN;
Zhixian Li, Guangzhou, CN;
Yuxia Pang, Guangzhou, CN;
SOUTH CHINA UNIVERSITY OF TECHNOLOGY, Guangzhou, CN;
GUANGDONG UNIVERSITY OF TECHNOLOGY, Guangzhou, CN;
Abstract
The present invention discloses a lignin-based hierarchical porous carbon with high specific surface area and preparation method and application thereof. The present invention employs maleic anhydride, acrylic acid, and hypophosphorous acid to modify a lignin, then performs a cross-linking reaction with a glutaraldehyde-triethanolamine condensate to prepare a lignin graft-copolymerized by phosphino carboxylic acid copolymer, and then dropwise adding a soluble calcium salt solution and a soluble carbonate solution into the lignin graft-copolymerized by phosphino carboxylic acid copolymer dispersion successively, co-precipitates to prepare a lignin/nano CaCOcomplex, finally obtains a lignin-based hierarchical porous carbon with high specific surface area through carbonizing at a high temperature. The preparation method of the present invention may enable nano CaCOto be uniformly and stably dispersed in a three-dimensional network structure of the lignin graft-copolymerized by phosphino carboxylic acid copolymer, realizing full and uniform complexation of the lignin with nano CaCO.