Solvent-free solketal production from glycerol promoted by yeast activated carbons

Author(s)

Rodrigues, Raphael ^[1] ; Santos, Mikaela S. ^[2] ; Nunes, Renan S. ^[3] ; Carvalho, Wagner A. ^[3] ; Labuto, Georgia ^{[4, 2]}

Affiliation

^[1] Fed Univ Grande Dourados, Fac Exact Sci & Technol, BR-79804970 Dourados, MS - Brazil

^[2] Univ Fed Sao Paulo, Fac Exact Sci & Technol, LabInSci Lab Integrated Sci, BR-09913030 Sao Paulo, SP - Brazil

^[3] Fed Univ ABC UFABC, Ctr Nat Sci & Humanities, BR-09210580 Santo Andre, SP - Brazil

^[4] Univ Fed Sao Paulo, Dept Quim, BR-09913030 Diadema, SP - Brazil

• Document type: Journal article
• Source: FUEL; v. 299, SEP 1 2021.
• Web of Science Citations: 1

Abstract

Chemically activated carbons from yeast biomass waste were produced and later modified by treatment with HNO3 aiming at tuning their surface acid features. The obtained materials were successfully applied as catalyst in a solvent-free solketal production process and the modified series of activated carbons displayed above average catalytic performance reaching glycerol conversion of up to 91% (TOF of 215 h-1) with 97% of selectivity toward solketal, as well as remarkable efficiency in consecutive catalytic runs. The physicochemical and surface chemistry properties of the activated carbons were characterized by means of N2 adsorption/desorption isotherms, thermal analysis, elemental analysis, surface functional groups titration (Boehm titration), X-rays diffraction and Raman spectroscopy. (AU)

• FAPESP's process: 17/24931-4 - Polyols conversion promoted by alternative catalysts under conventional and microwave heating
• Grantee: Wagner Alves Carvalho
• Support Opportunities: Regular Research Grants