TY - JOUR
T1 - Preparation of cancrinite-type zeolite from diatomaceous earth as transesterification catalysts for biodiesel production
AU - Đặng, Tấn Hiệp
AU - Nguyễn, Xuân Hoàn
AU - Chou, Chi Lin
AU - Chen, Bing Hung
N1 - Funding Information:
This work was financially supported by the Ministry of Science and Technology of Taiwan through Grant No. MOST 107–2923–E–006–004–MY3 .
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/8
Y1 - 2021/8
N2 - A new type of solid catalyst prepared from hydrothermal reaction of natural diatomaceous earth in NaOH solution was studied for biodiesel production through the transesterification of soybean and palm oil in excess methanol. Explicitly, the natural diatomite was transformed into efficacious catalysts, sequentially, by dispersion and activation in NaOH solutions for 30 min at 30 °C, followed by hydrothermal treatments at 180 °C or 220 °C for 12 h, and finally by calcination at 500 °C for 6 h. Coincidently, the physicochemical characteristics of these as-prepared catalysts were shown to bear a good resemblance with those of zeolite CAN. Under suitable conditions, the conversion efficiencies of soybean and palm oils to biodiesel in presence of these zeolite CAN catalysts at 63 °C and 70 °C could be obtained as high as 98.0% and 98.4%, respectively. Furthermore, the activation energies of the transesterification reactions of soybean and palm oils in excess methanol were found as 64.1 kJ/mol and 122.5 kJ/mol, respectively.
AB - A new type of solid catalyst prepared from hydrothermal reaction of natural diatomaceous earth in NaOH solution was studied for biodiesel production through the transesterification of soybean and palm oil in excess methanol. Explicitly, the natural diatomite was transformed into efficacious catalysts, sequentially, by dispersion and activation in NaOH solutions for 30 min at 30 °C, followed by hydrothermal treatments at 180 °C or 220 °C for 12 h, and finally by calcination at 500 °C for 6 h. Coincidently, the physicochemical characteristics of these as-prepared catalysts were shown to bear a good resemblance with those of zeolite CAN. Under suitable conditions, the conversion efficiencies of soybean and palm oils to biodiesel in presence of these zeolite CAN catalysts at 63 °C and 70 °C could be obtained as high as 98.0% and 98.4%, respectively. Furthermore, the activation energies of the transesterification reactions of soybean and palm oils in excess methanol were found as 64.1 kJ/mol and 122.5 kJ/mol, respectively.
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U2 - 10.1016/j.renene.2021.04.068
DO - 10.1016/j.renene.2021.04.068
M3 - Article
AN - SCOPUS:85105005108
VL - 174
SP - 347
EP - 358
JO - Renewable Energy
JF - Renewable Energy
SN - 0960-1481
ER -