Patent · US Active

Modified porous membrane material and preparation method thereof, and liquid membrane separation method of carbon dioxide

US11628410B2 · kind B2 · utility

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7Claims

0Family size

Assignee

NANJING TECH UNIVERSITY · CN

Inventors

Yiqun Fan · 安丰镇, CN
Peng Xu · Guilderland, US
Minghui Qiu · Longbeilingcun, CN
Kaiyun Fu · Nanjing, CN
Xianfu Chen · Nanjing, CN
Xiangli Kong · Nanjing, CN
Dawei Gong · Shanghai, CN

Key dates

Filing date	Jun 17, 2020
Grant date	Apr 18, 2023
Priority date	—
Expiry date	Jun 17, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/151
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A membrane modification method for improving liquid membrane separation of carbon dioxide (CO2) includes grafting an organic substance containing an amine group on a porous membrane material, and loading water into pore channels of the porous membrane material to prepare a supported liquid membrane for a gas mixture separation experiment of CO2. In the method, the amine group is introduced through chemical grafting to make the water being alkaline when used as membrane liquid. Compared with an alkaline solution as the membrane liquid, the method can avoid the loss of active alkaline substances and increase the permeation flux of CO2.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.