TY - JOUR
T1 - Monitoring instability of linear amine impregnated UiO-66 by in-situ temperature resolved powder X-ray diffraction
AU - Song, Youngdong
AU - Thirion, Damien
AU - Subramanian, Saravanan
AU - Lah, Myoung Soo
AU - Yavuz, Cafer T.
N1 - Generated from Scopus record by KAUST IRTS on 2021-03-16
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Carbon dioxide capture requires stable porous solids like zirconium based metal-organic frameworks (MOFs) in order to make sequestration efforts feasible. Because of the weak binding at low CO2partial pressures, oligomeric amines are commonly loaded on porous supports to maximize CO2capture while attempting to keep porosity for enhanced diffusion. Here we show the first temperature resolved stability study of linear-amine impregnated UiO-66 by in-situ monitoring of the PXRD pattern. Our findings show that the crystal structure shows a contraction at temperatures as low as 80 °C and deforms considerably above 120 °C, leading to significant doubts about their applicability in CO2capture from lean feeds. We confirm that all MOFs need to be thoroughly analyzed at least by means of PXRD at the process relevant temperatures, and reinforced before any plausible plans of application in CO2capture.
AB - Carbon dioxide capture requires stable porous solids like zirconium based metal-organic frameworks (MOFs) in order to make sequestration efforts feasible. Because of the weak binding at low CO2partial pressures, oligomeric amines are commonly loaded on porous supports to maximize CO2capture while attempting to keep porosity for enhanced diffusion. Here we show the first temperature resolved stability study of linear-amine impregnated UiO-66 by in-situ monitoring of the PXRD pattern. Our findings show that the crystal structure shows a contraction at temperatures as low as 80 °C and deforms considerably above 120 °C, leading to significant doubts about their applicability in CO2capture from lean feeds. We confirm that all MOFs need to be thoroughly analyzed at least by means of PXRD at the process relevant temperatures, and reinforced before any plausible plans of application in CO2capture.
UR - https://linkinghub.elsevier.com/retrieve/pii/S1387181117300628
UR - http://www.scopus.com/inward/record.url?scp=85012961125&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2017.02.021
DO - 10.1016/j.micromeso.2017.02.021
M3 - Article
SN - 1387-1811
VL - 243
SP - 85
EP - 90
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
ER -