Rib shaped carbon catalyst derived from Zea mays L. cob for ketalization of glycerol

Abstract

In the present work, the activated carbon was derived from corncob via NaOH activation for solketal production.

Ru/ZrO2 as a Facile and Efficient Heterogeneous Catalyst for the Catalytic Hydrogenation of Bicarbonate Using Biodiesel-Waste Glycerol as a Hydrogen Donor

“…The band at 1620 cm –1 was assigned to the H–O–H bending vibration of absorbed water, and its signal decreased with the increase of reaction time, probably indicating the consumption of adsorbed water. The broad and intense band centered at 3372–3447 cm –1 (Figure b) was assigned to the stretching absorption of the hydroxyl bond . Several main hydroxyl-contained compounds including glycerol (3378 cm –1 ), lactate (3418 cm –1 ), formate (3448 cm –1 ), fresh Ru/ZrO 2 (3440 cm –1 ), and NaHCO 3 (3474 cm –1 ) could be responsible for this broad peak according to their ex situ FTIR spectra (Figure c).…”

“…The broad and intense band centered at 3372−3447 cm −1 (Figure 5b) was assigned to the stretching absorption of the hydroxyl bond. 36 Several main hydroxyl-contained compounds including glycerol (3378 cm −1 ), lactate (3418 cm −1 ), formate (3448 cm −1 ), fresh Ru/ZrO 2 (3440 cm −1 ), and NaHCO 3 (3474 cm −1 ) could be responsible for this broad peak according to their ex situ FTIR spectra (Figure 5c). Obviously, the peak assigned to the hydroxyl weakened and displayed a significant hypsochromic shift from 3370 to 3450 cm −1 with the increase of reaction time, corresponding to the consumption and transformation of glycerol.…”

Co-Carbonized Waste Polythene/Sugarcane Bagasse Nanocomposite for Aqueous Environmental Remediation Applications

“…The morphology of SBPE and SBPEAC composites was analyzed through TEM, illustrated in Figure S1 . It was observed that the SBPE composite does not have any pores, whereas, after the co-carbonized of SBPE through pyrolysis, the SBPEAC composite had a porous structure [ 46 ]. Similar results were reported by Hossain et al [ 47 ] for mesoporous activated carbon developed from hemp bast fiber through hydrothermal processing.…”

“…After MG adsorption on SBPE and SBPEAC, the atomic concentration of C increased from 72.1 to 74.3% and 82.3 to 85.2%, respectively, which might be due to the accumulation of MG ions over the SBPE and SBPEAC surface. The deconvoluted C1s spectrum of SBPEAC showed peaks at 284.61, 285.1, 286.7, and 289.46 eV attributed to C-C/C=C, C-O/C-N, C=O, and O-C=O, respectively ( Figure 3 a) [ 46 , 47 ]. The high-resolution deconvoluted O1s spectrum of SBPEAC showed four peaks at 531.12, 532.51, 533.80, and 536.01 eV, which were assigned to C-O, C=O, and O-C=O, respectively ( Figure 3 b) [ 48 ].…”

Glycerol Valorization—The Role of Biochar Catalysts

“…Lower conversions were obtained in the work of J. Kaur [ 72 ] and co-workers, where value-added carbon produced from Zea mays L. cob was activated by NOH ( Figure 9 ) and used to produce solketal. The optimum conditions achieved with a molar ratio of 1:8:8 (glycerol:acetone:methanol) in 1 h with 5 wt% (w.r.t.…”