TY - JOUR

T1 - Xerogel mesoporous materials based on ultrastable Blatter radicals for efficient sorption of nitric oxide

AU - Yazikova, Anastasiya A.

AU - Efremov, Aleksandr A.

AU - Poryvaev, Artem S.

AU - Polyukhov, Daniil M.

AU - Gjuzi, Eva

AU - Oetzmann, Denise

AU - Hoffmann, Frank

AU - Fröba, Michael

AU - Fedin, Matvey V.

PY - 2024/10/5

Y1 - 2024/10/5

N2 - The reduction of hazardous nitric oxide emissions remains a significant ecological challenge. Despite the variety of possibilities, sorbents able to capture low concentrations of NO from flue gas with high selectivity are still in demand. In this work a new type of mesoporous xerogel material highly loaded with ultrastable Blatter radicals (BTR, >60 % by mass) that act as selective NO sorption sites is developed. Electron Paramagnetic Resonance (EPR) spectroscopy evidences reversible NO sorption in nanometer-scale pores of BTR-based xerogels and indicates the high NO capacity of such radical-rich sorbent. Efficient NO capture from model flue gas mixture is also evidenced in experiments with a fixed bed reactor. Such advanced properties of new materials as selectivity, strong binding with NO and an ability for mild regeneration via thermodesorption promote them for future ecological applications.

AB - The reduction of hazardous nitric oxide emissions remains a significant ecological challenge. Despite the variety of possibilities, sorbents able to capture low concentrations of NO from flue gas with high selectivity are still in demand. In this work a new type of mesoporous xerogel material highly loaded with ultrastable Blatter radicals (BTR, >60 % by mass) that act as selective NO sorption sites is developed. Electron Paramagnetic Resonance (EPR) spectroscopy evidences reversible NO sorption in nanometer-scale pores of BTR-based xerogels and indicates the high NO capacity of such radical-rich sorbent. Efficient NO capture from model flue gas mixture is also evidenced in experiments with a fixed bed reactor. Such advanced properties of new materials as selectivity, strong binding with NO and an ability for mild regeneration via thermodesorption promote them for future ecological applications.

KW - Electron paramagnetic resonance

KW - Mesoporous materials

KW - NO

KW - Triazinyl radicals

UR - https://www.mendeley.com/catalogue/98d75cf4-9145-3be4-a927-5f7d3ad37a3c/

U2 - 10.1016/j.jhazmat.2024.135520

DO - 10.1016/j.jhazmat.2024.135520

M3 - Article

C2 - 39159578

VL - 478

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

SN - 0304-3894

M1 - 135520

ER -