Synergistic catalytic hydrogenation of furfural to 1,2-pentanediol and 1,5-pentanediol with LDO derived from CuMgAl hydrotalcite

Valorization of Waste Lignocellulose to Furfural by Sulfonated Biobased Heterogeneous Catalyst Using Ultrasonic-Treated Chestnut Shell Waste as Carrier

“…It can be valorized into various valuable intermediates, such as furfuryl alcohol, furfurylamine, furoic acid, succinic acid and γ-valerolactone [12][13][14][15][16][17]. It is also the precursor for the synthesis of biofuels, including valerate esters, pentanediol, and 2-methyltetrahydrofuran [18][19][20]. Typically, furfural is obtained through acid-catalyzed dehydration of xylose derived from hemicellulose in lignocellulosic biomass [21][22][23].…”

Continuous production of 1,4-pentanediol from ethyl levulinate and industrialized furfuryl alcohol over Cu-based catalysts

“…37 In addition, no obvious Al 2 O 3 characteristic diffraction peak was found in the calcined samples, indicating that Al 2 O 3 mainly existed in an amorphous phase. 38 Several obvious infrared bands were also observed in the FT-IR spectrum of the calcined catalyst precursor, implying that some water molecules and inorganic salt anions still existed in the calcined CuMgAl catalysts. Compared with CuMgAl-LDO containing CO 3 2− in the precipitant (sodium carbonate and mixed alkali as the precipitant), the infrared band of CuMgAl–NaOH at 1378 cm −1 became more sharper after calcination, since most of CO 3 2− decomposed and majority of NO 3 − remained in the catalyst precursors, and the hypotheses were well verified by subsequent TG-MS analysis.…”

Jornadas de Ciencia y Tecnología 2021

“…En los espectros XPS del O 1s de los OMM se distinguieron tres contribuciones alrededor de 529,5 eV (Oα), 532,0 eV (Oβ) y 533,3 eV (Oɣ) que son característicos de las especies de O 2de superficie (oxígeno reticular unido a los cationes metálicos de la estructura), hidróxidos metálicos de superficie (oxígeno adsorbido en la superficie) y oxígeno carboxilo de los carbonatos o especies de H2O adsorbidas, respectivamente. Las energías de enlace y el porcentaje de cada contribución se resumen en la Tabla 4 (Fu et al, 2021). La presencia significativa del carácter de O 2es consistente con la presencia de sitios básicos fuertes de Lewis en los catalizadores OMM.…”

“…1(b)) dando lugar a los OMM. Los mismos exhibieron picos a 2θ igual a 43° y 63°, que corresponden a las reflexiones ( 200) y (220), respectivamente, de la estructura periclasa de MgO (Fu et al, 2021). No se detectaron fases segregadas, lo que sugiere que los cationes de los metales de transición están dispersos en la matriz de óxidos de Mg y Al, solo se detectó un ligero pico de difracción a 2θ ~ 36° que podría asociarse a la fase de CuO, y ZnO solapada con un pico de MgO.…”