RT Conference Proceedings
T1 Alcohol decomposition on basic/acid lignin-derived submicron diameter carbon fibers
A1 García-Mateos, Francisco José
A1 Rosas-Martínez, Juana María
A1 Rodríguez-Mirasol, José
A1 Cordero-Alcántara, Tomás
K1 Lignina
K1 Carbón
AB The use of lignin, the second most abundant polymer in nature, along with a simple and versatiletechnique, electrospinning, represents an advantageous and promising approach for the preparation ofcarbon fibers. In previous studies, we have demonstrated that the incorporation of H3PO4 to the initiallignin solution allows for shortening the carbon fibers preparation process and that the resulting carbonfibers present P-surface groups that are of great interest for heterogeneous catalysis.Different carbon fibers catalysts have been prepared by electropinning of Alcell lignin in the absence orpresence of H3PO4 as chemical activating agent. Carbonization at different temperatures between 500and 1600 ºC allows for preparing carbon fibers with a high variety of porosity and chemical surfaceproperties. Diverse oxygen surface groups are presented on the carbon catalysts surface. Theisopropanol decomposition has been used as a catalytic test to study the acid or basic character of theprepared carbon fibers. Carbon fibers without phosphorus surface groups generate acetone as the mainproduct of the isopropanol decomposition reaction, from 400 to 600 ºC, suggesting the basic characterof these catalysts. On the contrary, phosphorus-containing carbon fibers show high acid character,producing selectivity to propylene of 100 % at temperatures between 250 and 350 ºC. The most acidcarbon fiber catalyst produced a high selectivity to ethylene and dimethyl ether for the decomposition ofethanol and methanol, respectively. The conversion enhancement that the presence of oxygen in the gasphase produced for all these reactions was also studied.
YR 2018
FD 2018-07-12
LK https://hdl.handle.net/10630/16214
UL https://hdl.handle.net/10630/16214
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.MINECO (CTQ2015-68654-R).MINECO (PTA2015-11464-I).
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026