Natural Celluloses as Catalysts in Dehydrogenation of NaBH4 in Methanol for H2 Production
Document Type
Article
Publication Date
2020
Digital Object Identifier (DOI)
https://doi.org/10.1021/acsomega.0c01653
Abstract
Cellulose, the most abundant renewable biopolymer, exists in many forms, such as microgranular cellulose (MGCell), sigmacell cellulose (SCell), cellulose fibers (FCell), and α-cellulose (AlfaCell). Several of these cellulose forms were protonated with an amine-containing agent polyethyleneimine (PEI), and the modified celluloses (XCell-PEI+) were studied as catalysts in methanolysis of NaBH4 for hydrogen (H2) generation. It was found that the SCell-PEI+-catalyzed reaction is the fastest one among the modified celluloses with a hydrogen generation rate of 5520 ± 119 mL H2/(g of catalyst × min). The activation energies of MGCell-PEI+, SCell-PEI+, FCell-PEI+, and AlfaCell-PEI+ were determined as +21.7, +23.4, +24.8, and + 21.8 kJ/mol, respectively. Reusability of catalysts was investigated, and regeneration of cellulose based catalysts after the fifth cycle could be readily achieved by HCl treatment to completely recover its activity. Therefore, PEI-modified-protonated cellulose forms constitute sustainable, re-generable, and renewable catalysts for production of H2, an environmentally benign green energy carrier.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
ACS Omega, v. 5, issue 25, p. 15519-15528
Scholar Commons Citation
Can, Mehmet; Demirci, Sahin; Sunol, Aydin K.; Philippidis, George; and Sahiner, Nurettin, "Natural Celluloses as Catalysts in Dehydrogenation of NaBH4 in Methanol for H2 Production" (2020). Chemical, Biological and Materials Engineering Faculty Publications. 17.
https://digitalcommons.usf.edu/ech_facpub/17
