国家/地区 中国（2）
IPC部 C（2）
IPC大类 C01（2）
IPC小类 C01B（2）
IPC C01B032/50（2）
发明人
公开年
申请年 2021（2）
专利权人

Preparation of modified graphene film used in system for capturing carbon dioxide in air, involves reducing graphene oxide sheets to obtain graphene sheets, using quaternary amine compounds to modify graphene sheet and preparing porous modified graphene membrane.

ZHANG Y, WANG J, XU S, BAI H

Preparing carbon dioxide by purifying liquid carbon dioxide comprises transferring liquid carbon dioxide to high-purity liquid carbon dioxide purification device, subjecting to purification testing, pressurizing and filling in vacuum bottle.

LU X, LIU G, DENG X