Functionalized NU-1000 with an Iridium Organometallic Fragment: SO<sub>2</sub> Capture Enhancement
Saidulu Gorla, Mariana L. Díaz‐Ramírez, Niroshani S. Abeynayake, David M. Kaphan, Daryl R. Williams, Vladimir Martis, Hugo A. Lara-García, B. Donnadieu, Nazario López, Ilich A. Ibarra, Virginia Montiel‐Palma
Abstract
A new material, MOF-type [Ir]@NU-1000, was accessed from the incorporation of the iridium organometallic fragment [Ir{κ3(P,Si,Si)PhP(o-C6H4CH2SiiPr2)2}] into NU-1000. The new material incorporates less than 1 wt % of Ir(III) (molar ratio Ir to NU-1000, 1:11), but the heat of adsorption for SO2 is significantly enhanced with respect to that of NU-1000. Being a highly promising adsorbent for SO2 capture, [Ir]@NU-1000 combines exceptional SO2 uptake at room temperature and outstanding cyclability. Additionally, it is stable and can be regenerated after SO2 desorption at low temperature.