Abstracts Book - IMRC 2018

• SF3-O062
EFFECT OF THE STRUCTURE, COMPOSITION AND ACID-BASE
PROPERTIES OF TiO2-ZrO2 SYNTHESIZED BY SOL-GEL USING
DIFFERENTS ADDITIVES FOR 5-HMF PRODUCTION FROM
GLUCOSE
Adib Abiu Silahua Pavon 1 , Jose Gilberto Torres Torres 1 , Juan Carlos Arevalo Perez 1 , Adrian
Cervantes Uribe 1 , Adrián Cordero García 1 , Claudia Guadalupe Espinosa Gonzalez 2 , Srinivas
Godavarthi 2 , Filiberto Ortiz Chi 2
1 Universidad Juárez Autónoma de Tabasco, Centro de Investigación de Ciencia y Tecnología
Aplicada (CICTAT), DACB, Laboratorio de Nanomateriales Catalíticos Aplicados al Desarrollo de
Fuentes de Energía y Remediación Ambiental, Mexico. 2 Cátedras CONACyT-Universidad Juárez
Autónoma de Tabasco, Centro de Investigación de Ciencia y Tecnología Aplicada (CICTAT),
DACB, Laboratorio de Nanomateriales Catalíticos Aplicados al Desarrollo de Fuentes de
Energía y Remediación Ambiental, Mexico.
The glucose, which is the unit compound of cellulose, is one of the most
important starting chemicals biomass. Thus, much more attention has been
paid to work on glucose-to-HMF conversion. The glucose is isomerized to
fructose preferentially on the basic sites and subsequent dehydration of
fructose to HMF on the acid sites. The TiO 2 -ZrO 2 has been reported in the
literature as a good generator of new catalytic sites (acid-base) due to strong
interaction between the individual oxides. In this work we propose the synthesis
of mixed oxides TiO 2 –ZrO 2 (with the ratio = 25/75, 50/50 and 75/25 % w/w) using
Sol-Gel method, with Acetic Acid (ACT) and Nitric Acid (HNO3) (pH=3) Ammonium
Hydroxide (AMN) and Sodium Hydroxide (NaOH) (pH=9) as synthesis additive.
The zirconia and titania precursors were Zirconium (IV) Butoxide [Zr(OC 4 H 9 )4]
and Titanium (IV) Butoxide [Ti(OC 4 H 9 ) 4 ] sigma-aldrich. After synthesis, the
supports were calcined at 500°C during 12 h using a heat ramp 2°C/min. The
characterization of supports was done by X-ray Diffraction, CO2-TPD, NH3-TPD,
TGA-DSC and N2 Physisorption. The production of 5-HMF glucose was carried
out in 50 ml stainless-steel autoclave equipped with a magnetic stirring system.
The reaction conditions were 30 bar of Ar and 175 ºC with constant stirring. The
5-HMF was quantified using Shimadzu HPLC with a Restek C-18 column and
PDA-Detector. The specific area results showed: by the TiO2 synthesized with
ammonium hydroxide 93 m2/g and ZrO2 with acetic acid of 42 m2/g, however
was observed an increment in the mixture TiO2-ZrO2, 172-290 and 216-246
m2/g respectively, with acetic acid and ammonium hydroxide respectively. The
CO2-TPD and NH3-TPD results showed that higher amount of basic and acid
sites available on the ZrO2-TiO2 (50/50% w/w) exists, using acetic acid, with a