Modified cellulose as a novel catalytic support for the selective reduction of NO with H2

ESTEBAN G. GIORIA; AGNES SZEGEDI; CHIARA SIGNORINI; LAURA B. GUTIERREZ; MARÍA CLAUDIA TALEB

Congreso; XXVII Congreso ibero-americano de catálisis; 2020

FISOCAT

Cellulose is the most abundant natural polymer, since it makes up the majority of the terrestrial biomass. Through functionalisation processes, it is possible to incorporate different functional groups into their polymeric chains. This allows diversifying its composition and structure, and gain a supporting material appropriate for a wide variety of applications in the field of adsorbents and catalysts. The cellulose functionalisation produces physicochemical changes on its surface that enhance the possibility of anchoring metallic species. The main aim of this work is to incorporate an active face on the modified cellulose to turn it into an efficient and stable catalyst. Thus, the use of cellulosic fibers as a support for Pd nanoparticles was proposed, evaluating different solvents in the carboxymethylation process and selecting the most suitable ones for the incorporation of the active material, Pd. The catalytic activity was evaluated with the reduction reaction of nitrogen monoxide (NO) with H2. In this work, the incorporation of metallic species of palladium was achieved, using carboxymethylated cellulose as a novel support. Optimum functionalisation was achieved employing ethanol as solvent. The characterization by SEM, DRX, Raman and FTIR conduced to evaluate the physicochemical properties of the fibers for the test reaction.