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  1. Home
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  4. Effect Of Different Supported Heteropoly Acid On The Catalytic Hydrothermal Conversion Of Cellulose Into Formic Acid
 
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Effect Of Different Supported Heteropoly Acid On The Catalytic Hydrothermal Conversion Of Cellulose Into Formic Acid

Journal
Materials Science Forum
Date Issued
2022
Author(s)
Nor Liyana Zakira Zabidi Adi @ Zaibidai Adil
Azzusyaza Azhari
Farah Wahida Harun 
Universiti Sains Islam Malaysia 
Tengku Shafazila Tengku Saharuddin
DOI
10.4028/p-72684c
Abstract
Cellulose, an abundant biomass, has received considerable attention as a renewable precursor to the formation of valuable chemicals. The overall strategy in this research is to produce formic acid from cellulose by using direct catalytic hydrothermal method. In this study, a heterogeneous catalyst system was developed by preparing different types of HPA on hydrotalcite. The three types of HPA- HT are phosphotungstic acid-hydrotalcite (PTA-HT), phosphomolybdic acid-hydrotalcite (PMA-HT) and silicotungstic acid-hydrotalcite (STA-HT); were prepared by the impregnation method. These prepared catalysts were characterized using FTIR, XRD and FESEM-EDX. The catalytic reaction was carried out in a hydrothermal reactor and the FA production was determined using HPLC-DAD. Comparison was made during the investigation where calcined HT was used for cellulose conversion and compared with each HPA-HT. All three catalysts were successfully impregnated on the calcined HT, as proven by XRD, FTIR, and EDX. According to the finding, PMA-HT give the highest cellulose conversion (48%) and FA yield (9.61%) followed by PTA-HT (32% converted cellulose with 7.35% FA yield) and STA-HT (17% cellulose converted and 2.87%). This phenomena occur due to the acidity and moderate redox properties of molybdenum in PMA. Herein, we reported effects of different HPAs on HT towards FA yield.
Subjects

Acid Catalyst, Cellul...

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