公开(公告)号：US20180021742A1

公开(公告)日：2018-01-25

申请号：US15520962

申请日：2015-10-28

Applicant: CARNEGIE MELLON UNIVERSITY

Inventor： Hunaid B. Nulwala ,  David Luebke ,  Xu Zhou

IPC: B01D71/76 ,  B01D69/12 ,  B01D67/00 ,  B01J41/13 ,  B01D71/52 ,  B01D71/62 ,  C08G73/08 ,  B01D53/22 ,  B01D69/02

CPC classification number: B01D71/76 ,  B01D53/22 ,  B01D53/228 ,  B01D67/0006 ,  B01D69/02 ,  B01D69/12 ,  B01D69/125 ,  B01D71/52 ,  B01D71/62 ,  B01D2257/504 ,  B01D2258/0283 ,  B01D2323/30 ,  B01D2323/40 ,  B01D2325/20 ,  B01J41/13 ,  C08G73/08 ,  Y02C10/10

Abstract: Provided herein are compositions, CO2-permeable/selective membranes and related methods of making and using the membranes. Ionically cross-linked poly(ether)-based membranes were prepared for applications relating to CO2. These films were studied for their thermal curing behavior using DSC. The resulting free-standing membranes have Tgs near −64° C., TdS up to 230° C., and Young's modulus up to 4.2 MPa. These membranes showed CO2 permeabilities of 84-110 Barrer and CO2/N2 selectivity of 20-40.

公开(公告)号：US10300438B2

公开(公告)日：2019-05-28

申请号：US15520962

申请日：2015-10-28

Applicant: CARNEGIE MELLON UNIVERSITY

Inventor： Hunaid B. Nulwala ,  David Luebke ,  Xu Zhou

IPC: B01D53/22 ,  B01D67/00 ,  B01D69/02 ,  B01D69/12 ,  B01D71/52 ,  B01D71/62 ,  B01D71/76 ,  B01J41/13 ,  C08G73/08

Abstract: Provided herein are compositions, CO2-permeable/selective membranes and related methods of making and using the membranes. Ionically cross-linked poly(ether)-based membranes were prepared for applications relating to CO2. These films were studied for their thermal curing behavior using DSC. The resulting free-standing membranes have Tgs near −64° C., TdS up to 230° C., and Young's modulus up to 4.2 MPa. These membranes showed CO2 permeabilities of 84-110 Barrer and CO2/N2 selectivity of 20-40.

公开(公告)号：US09643123B2

公开(公告)日：2017-05-09

申请号：US14525011

申请日：2014-10-27

Applicant: CARNEGIE MELLON UNIVERSITY ,  U.S. Department of Energy

Inventor： Hunaid Nulwala ,  David Luebke

IPC: B01D53/02 ,  B01D53/14

CPC classification number: B01D53/1493 ,  B01D53/1475 ,  B01D2252/204 ,  B01D2252/502 ,  B01D2258/0283 ,  B01D2259/4533 ,  Y02A50/2342 ,  Y02C10/06 ,  Y02C10/08

Abstract: Methods and compositions useful, for example, for physical solvent carbon capture. A method comprising: contacting at least one first composition comprising carbon dioxide with at least one second composition to at least partially dissolve the carbon dioxide of the first composition in the second composition, wherein the second composition comprises at least one siloxane compound which is covalently modified with at least one non-siloxane group comprising at least one heteroatom. Polydimethylsiloxane (PDMS) materials and ethylene-glycol based materials have high carbon dioxide solubility but suffer from various problems. PDMS is hydrophobic but suffers from low selectivity. Ethylene-glycol based systems have good solubility and selectivity, but suffer from high affinity to water. Solvents were developed which keep the desired combinations of properties, and result in a simplified, overall process for carbon dioxide removal from a mixed gas stream.