Title:
EASY-CONTROL TECHNOLOGY FOR PREPARING BIOMASS SKELETAL CHARCOAL HAVING MICROPORE-MESOPORE STRUCTURE AND HIGH SPECIFIC SURFACE AREA
Document Type and Number:
WIPO Patent Application WO/2020/077673
Kind Code:
A1
Abstract:
Provided is an easy-control technology for preparing biomass skeletal charcoal having a micropore-mesopore structure and a high specific surface area, comprising: using straws as a raw material; spraying a 50-85 wt% potassium salt solution to the crushed dry straws, and reacting for 1-4 hours in a 600-1,000°C nitrogen atmosphere for high temperature carbonization; preserving the heat of the carbonized straw charcoal in a 280-350°C air atmosphere for 1-7 hours; and adjusting the potassium salt concentration and the reaction temperature, and using an activating technology for the low temperature etching and peeling of a natural biomass using a sub-molten salt method to prepare biomass skeletal charcoal, the specific surface area of the biomass skeletal charcoal being 500-3000 m2/g and the most probable pore size thereof being 1-20 nm. The method implements a pore size adjustable within a micropore range and a mesopore range, is corrosion-free and environmentally friendly, features low costs, simple and easy-control preparation conditions and technologies, and wide raw material sources, facilitates large-scale production, and can be applied to the fields such as of high-efficiency adsorption, catalyzation, and energy storage.
Inventors:
ZHU JIAHUA (CN)
LU XIAOHUA (CN)
MU LIWEN (CN)
LU XIAOHUA (CN)
MU LIWEN (CN)
Application Number:
PCT/CN2018/112930
Publication Date:
April 23, 2020
Filing Date:
October 31, 2018
Export Citation:
Assignee:
NANJING UNIVERSITY OF TECHNOLOGY (CN)
International Classes:
C01B32/348; C01B32/324
Foreign References:
| CN103121682A | 2013-05-29 | |||
| CN103121682A | 2013-05-29 | |||
| CN105819416A | 2016-08-03 | |||
| CN105271227A | 2016-01-27 | |||
| CN101585532A | 2009-11-25 | |||
| CN103803548A | 2014-05-21 |
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (CN)
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