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Title: Catalytic conversion of Kraft lignin to bio-multilayer graphene materials under different atmospheres

Source: Journal of Materials Science. 53(11): 8020-8029.

Author(s)Yan, Qiangu ; Zhang, Xuefeng ; Li, Jinghao ; Hassan, El Barbary; Wang, Chuji ; Zhang, Jilei ; Cai, Zhiyong

Publication Year: 2018  View PDF »

Category: Journal Articles

Abstract: Kraft lignin was catalytic graphitized by iron at 1000 C in argon, hydrogen, CO2, methane, and natural gas atmospheres, respectively. The effect of atmospheric agent types on product distribution (gas, liquid, and solid carbon yields) was analyzed. The solid products were characterized by scanning electron microscopy, Raman, high-resolution transmission electron microscopy, and X-ray diffraction. Experimental results have shown that the degree of graphitization of Kraft lignin depends not only on the highest temperature, but also the type of ambient gas phase during heat treatment. Methane and natural gas in the ambient gas phase seem to accelerate the formation of multilayer graphene materials with a range of 2–30 layers, and hydrogen and carbon dioxide have an etching effect on solid carbon species during the catalytic graphitization process, while multilayer graphene-encapsulated iron nanoparticles were the main products in the case of argon.

Keywords: Lignin; graphene; biomaterial; graphite

Publication Review Process: Formally Refereed

File size: 1,024 kb(s)

Date posted: 12/02/2019

This publication is also viewable on Treesearch:  view
RITS Product ID: 96645
Current FPL Scientist associated with this product
Cai, Zhiyong
Supervisory Research Materials Engineer
  

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