Preparation of alkyl levulinates from biomass-derived 5-(halomethyl)furfural (X = Cl, Br), furfuryl alcohol, and angelica lactone using silica-supported perchloric acid as a heterogeneous acid catalyst

2020 ◽  
Vol 10 (4) ◽  
pp. 849-856
Author(s):  
Sharath Bandibairanahalli Onkarappa ◽  
Navya Subray Bhat ◽  
Saikat Dutta
Keyword(s):  
Perchloric Acid ◽  
Furfuryl Alcohol ◽  
Acid Catalyst ◽  
Heterogeneous Acid Catalyst ◽  
Alkyl Levulinates ◽  
Angelica Lactone

scholarly journals Alkyl Levulinates from Furfuryl Alcohol Using CT151 Purolite as Heterogenous Catalyst: Optimization, Purification, and Recycling

2021 ◽  
Vol 2 (3) ◽  
pp. 493-505
Author(s):  
Mattia Annatelli ◽  
Giacomo Trapasso ◽  
Lucrezia Lena ◽  
Fabio Aricò
Keyword(s):  
Reaction Time ◽  
Furfuryl Alcohol ◽  
Catalyst Activity ◽  
Scale Up ◽  
Acid Catalyst ◽  
Reaction Conditions ◽  
Short Reaction Time ◽  
Ethyl Levulinate ◽  
Heterogenous Catalyst ◽  
Alkyl Levulinates

Commercially available Purolite CT151 demonstrated to be an efficient acid catalyst for the synthesis of alkyl levulinates via alcoholysis of furfuryl alcohol (FA) at mild temperatures (80–120 °C) and short reaction time (5 h). Reaction conditions were first optimized for the synthesis of ethyl levulinate and then tested for the preparation of methyl-, propyl-, isopropyl-, butyl, sec-butyl- and allyl levulinate. Preliminary scale-up tests were carried out for most of the alkyl levulinates (starting from 5.0 g of FA) and the resulting products were isolated as pure by distillation in good yields (up to 63%). Furthermore, recycling experiments, conducted for the preparation of ethyl levulinate, showed that both the Purolite CT151 and the exceeding ethanol can be recovered and reused for four consecutive runs without any noticeable loss in the catalyst activity.

An efficient heterogeneous acid catalyst derived from waste ginger straw for biodiesel production

2021 ◽  
Author(s):  
Hewei Yu ◽  
Yunlong Cao ◽  
Heyao Li ◽  
Gaiju Zhao ◽  
Xingyu Zhang ◽  
...  
Keyword(s):  
Acid Catalyst ◽  
Biodiesel Production ◽  
Heterogeneous Acid Catalyst

Catalyzing learning with green chemistry undergraduate research

2020 ◽  
Vol 5 (11) ◽  
Author(s):  
Lindsey A Welch
Keyword(s):  
Green Chemistry ◽  
Furfuryl Alcohol ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Ethyl Esters ◽  
Transfer Hydrogenation ◽  
Isopropyl Ether ◽  
Chemistry Curriculum ◽  
Undergraduate Chemistry ◽  
Chemistry Research

AbstractGreen chemistry and sustainability are important concepts to incorporate into the undergraduate chemistry curriculum. Through the development of innovative undergraduate chemistry research projects in these areas, retention of students in the physical sciences can be improved. This paper describes two projects in undergraduate catalysis research: hydrogenation of furfural and the esterification of biooil from pyrolyzed wood. Catalytic transfer hydrogenation (CTH) of furfural with Pd/C led to the production of furfuryl alcohol, furfuryl isopropyl ether, 2-methylfuran, and tetrahydrofurfuryl alcohol. The metal chloride additives improved selectivity for furfuryl alcohol and furfuryl isopropyl ether. Catalytic conversion of pyrolyzed wood biooil in ethanol with a solid acid catalyst yielded ethyl esters, including ethyl acetate and ethyl propionate, as characterized by GC/MS These projects are described in the context of engaging undergraduate students in hands-on research for the purpose of improving retention and persistence, as well as preparing young scientists to enter graduate programs and the STEM workforce.

Organic Solid Acid Catalyst for Efficient Conversion of Furfuryl Alcohol to Biofuels

2016 ◽  
Vol 1 (19) ◽  
pp. 6079-6085 ◽  
Author(s):  
Md. Mominul Islam ◽  
Subhajit Bhunia ◽  
Rostam Ali Molla ◽  
Asim Bhaumik ◽  
Sk. Manirul Islam
Keyword(s):  
Furfuryl Alcohol ◽  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Efficient Conversion ◽  
Organic Solid

scholarly journals Optimization of Biodiesel Production from Waste Cooking Oil Using S–TiO2/SBA-15 Heterogeneous Acid Catalyst

Catalysts ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 67 ◽  
Author(s):  
Muhammad Hossain ◽  
Md Siddik Bhuyan ◽  
Abul Md Ashraful Alam ◽  
Yong Seo
Keyword(s):  
Solid Acid ◽  
Solid Acid Catalyst ◽  
Acid Catalyst ◽  
Waste Cooking Oil ◽  
Biodiesel Production ◽  
Catalyst Loading ◽  
Esterification Reaction ◽  
Impregnation Method ◽  
Cooking Oil ◽  
Heterogeneous Acid Catalyst

The aim of this research was to synthesize, characterize, and apply a heterogeneous acid catalyst to optimum biodiesel production from hydrolyzed waste cooking oil via an esterification reaction, to meet society’s future demands. The solid acid catalyst S–TiO2/SBA-15 was synthesized by a direct wet impregnation method. The prepared catalyst was evaluated using analytical techniques, X-ray diffraction (XRD), Scanning electron microscopy (SEM) and the Brunauer–Emmett–Teller (BET) method. The statistical analysis of variance (ANOVA) was studied to validate the experimental results. The catalytic effect on biodiesel production was examined by varying the parameters as follows: temperatures of 160 to 220 °C, 20–35 min reaction time, methanol-to-oil mole ratio between 5:1 and 20:1, and catalyst loading of 0.5%–1.25%. The maximum biodiesel yield was 94.96 ± 0.12% obtained under the optimum reaction conditions of 200 °C, 30 min, and 1:15 oil to methanol molar ratio with 1.0% catalyst loading. The catalyst was reused successfully three times with 90% efficiency without regeneration. The fuel properties of the produced biodiesel were found to be within the limits set by the specifications of the biodiesel standard. This solid acid catalytic method can replace the conventional homogeneous catalyzed transesterification of waste cooking oil for biodiesel production.

Sulfonated magnetic nanobiochar as heterogeneous acid catalyst for esterification reaction

2020 ◽  
Vol 8 (4) ◽  
pp. 103912 ◽  
Author(s):  
S.N. Aisyiyah Jenie ◽  
Anis Kristiani ◽  
Sudiyarmanto ◽  
Deni S. Khaerudini ◽  
Kaoru Takeishi
Keyword(s):  
Acid Catalyst ◽  
Esterification Reaction ◽  
Heterogeneous Acid Catalyst

scholarly journals Acetylation of Eugenol over 12-Molybdophosphoric Acid Anchored in Mesoporous Silicate Support Synthesized from Flint Kaolin

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2995 ◽  
Author(s):  
Alex de Nazaré de Oliveira ◽  
Erika Tallyta Leite Lima ◽  
Deborah Terra de Oliveira ◽  
Rômulo Simões Angélica ◽  
Eloisa Helena de Aguiar Andrade ◽  
...  
Keyword(s):  
Acetic Anhydride ◽  
Acid Catalyst ◽  
Kinetic Studies ◽  
Molar Ratio ◽  
Molybdophosphoric Acid ◽  
Mesoporous Silicate ◽  
First Order Kinetics ◽  
Eugenyl Acetate ◽  
Heterogeneous Acid Catalyst ◽  
Excellent Stability

A new prepared catalyst, 12-molybdophosphoric acid (HPMo) anchored to the mesoporous aluminosilicate AlSiM, synthesized from Amazon kaolin, was characterized and used as a heterogeneous acid catalyst for the production of eugenyl acetate by acetylation of eugenol with acetic anhydride. The effect of various reaction parameters, such as catalyst concentration, eugenol/acetic anhydride molar ratio, temperature and reaction time, was studied to optimize the conditions of maximum conversion of eugenol. The kinetics studies showed that in eugenol acetylation, the substrate concentration follows a first order kinetics. The results of activation energy was 19.96 kJ mol−1 for HPMo anchored to AlSiM. The reuse of the catalyst was also studied and there was no loss of catalytic activity after four cycles of use (from 99.9% in the first cycle to 90% in the fifth cycle was confirmed), and an excellent stability of the material was observed. Based on catalytic and kinetic studies, HPMo anchored to AlSiM is considered an excellent catalyst.

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