(742f) Transition Metal Nanoparticles on Nanoporous Carbons Derived from Metal-Organic Framework Templates
AIChE Annual Meeting
Thursday, November 12, 2015 - 4:45pm to 5:03pm
The ability to control the structure of materials at the nanoscale is essential for creating solutions to challenges in a variety of highly important areas including sensing, coating, abrasives, catalysis, and drug delivery. Recently, metal organic frameworks (MOFs) have been used to prepare highly purified nanoporous carbon materials.1, 2 MOFs have been thermally transformed to yield either metal-free porous carbon (as in the case of Zn-based MOFs) or metal particle/carbon support hybrid materials (as in the case of non Zn-based MOFs). The carburization of Zn-MOFs has the distinct advantages of yielding materials with surface areas and pore volumes comparable or even superior to the parent MOF.1, 2 In this presentation, we will discuss our work from pyrolyzing metal-modified IRMOF-3 to yield various nanocatalysts.3, 4 We selected Ru, W, V, and Ti as metal precursors due to their high catalytic activity for various biomass-related upgrading reactions. We observed metal nanoparticles (4-6 nm) after pyrolysis of materials derived from post-synthetic modification of IRMOF-3 compared to materials prepared from un-coordinated metals immobilized on IRMOF-1 (12-14 nm) likely due to site isolation of the metal precursors. Additionally, based on the pyrolysis temperature, oxides, oxycarbides, and carbides of various metals were controllably formed. This presentation will highlight the synthesis and characterization of these nanocatalysts derived from MOFs.
1. Jiang, H.-L.; Liu, B.; Lan, Y.-Q.; Kuratani, K.; Akita, T.; Shioyama, H.; Zong, F.; Xu, Q., J. Am. Chem. Soc. 2011, 133 (31), 11854-11857.
2. Liu, B.; Shioyama, H.; Jiang, H.; Zhang, X.; Xu, Q., Carbon 2010, 48 (2), 456-463.
3. Kim, J.; McNamara, N. D.; Her, T. H.; Hicks, J. C., ACS Applied Materials & Interfaces 2013, 5 (21), 11479-11487.
4. Kim, J.; Neumann, G. T.; McNamara, N. D.; Hicks, J. C., Journal of Materials Chemistry A 2014, 2 (34), 14014-14027.