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Your search keyword '"To, Dien-Thien"' showing total 3 results
Start Over Author "To, Dien-Thien" Topic melamine
3 results on '"To, Dien-Thien"'

1. Nitrogen-Doped Co Catalyst Derived from Carbothermal Reduction of Cobalt Phyllosilicate and its Application in Levulinic Acid Hydrogenation to γ-Valerolactone

Author

Jyh-Fu Lee, Yu-Chia Chiang, Chi-Liang Chen, Yu Chuan Lin, and Dien-Thien To

Subjects
Valerolactone, chemistry.chemical_element, General Chemistry, Grafting, Catalysis, chemistry.chemical_compound, chemistry, Carbothermic reaction, Levulinic acid, Melamine, Cobalt, Organometallic chemistry, Nuclear chemistry
Abstract

An active and stable Co catalyst decorated by N species was developed and applied in the hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL). The catalyst was first synthesized by grafting glucose (G) and melamine (M) on cobalt phyllosilicate (CoPS) hydrothermally, and then by pyrolyzing GM/CoPS at a designated temperature for the carbothermal reduction (denoting as GM@CoPS-X; X = temperature). Among tested catalysts, GM@CoPS-700 showed the most promising GVL productivity (1684 mmol GVL/gsurface Co /h), stability, and recyclability (an ca. 8% loss of initial activity) in five consecutive trials. Doped N species were found to improve the concentration of Coδ+ (0

Published
2021
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2. Conversion of CO2 to Light Hydrocarbons by Using FeCx Catalysts Derived from Iron Nitrate Co-pyrolyzing with Melamine, Bulk g-C3N4, or Defective g-C3N4.

Author

To, Dien-Thien, Juan, Joon Ching, Tsai, Meng-Hsuan, Wang, Chia-Hsin, Pao, Chih-Wen, Chen, Chi-Liang, and Lin, Yu-Chuan

Subjects
*FERRIC nitrate, *HYDROCARBONS, *CATALYSTS, *ALKENES, *CEMENTITE, *MELAMINE
Abstract

FeCx catalysts (Fe-CN-Py) were synthesized by co-pyrolyzing the mixture of iron nitrate and a CN source (melamine, bulk g-C3N4 (b-C3N4), or defective g-C3N4 (d-C3N4)). The physicochemical properties of Fe-CN-Py catalysts and their activities of CO2 hydrogenation to light hydrocarbon (C2-C6) were analyzed. The results indicated that Fe-d-C3N4-(0.3)-Py is the most promising with the highest CO2 conversion (47.2%), olefin yield (10.8%), and olefin space-time yield (STY = 4.5 µmol olefin/s/gFe). The promising activity of Fe-d-C3N4-(0.3)-Py was attributed to its high concentration of surface FeCx. The correlation between surface FeCx and the STY of hydrocarbons and olefins was established. [ABSTRACT FROM AUTHOR]

Published
2023
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3. Conversion of CO2 to Light Hydrocarbons by Using FeCx Catalysts Derived from Iron Nitrate Co-pyrolyzing with Melamine, Bulk g-C3N4, or Defective g-C3N4.

Author

To, Dien-Thien, Juan, Joon Ching, Tsai, Meng-Hsuan, Wang, Chia-Hsin, Pao, Chih-Wen, Chen, Chi-Liang, and Lin, Yu-Chuan

Subjects
FERRIC nitrate, HYDROCARBONS, CATALYSTS, ALKENES, CEMENTITE, MELAMINE
Abstract

FeCx catalysts (Fe-CN-Py) were synthesized by co-pyrolyzing the mixture of iron nitrate and a CN source (melamine, bulk g-C3N4 (b-C3N4), or defective g-C3N4 (d-C3N4)). The physicochemical properties of Fe-CN-Py catalysts and their activities of CO2 hydrogenation to light hydrocarbon (C2-C6) were analyzed. The results indicated that Fe-d-C3N4-(0.3)-Py is the most promising with the highest CO2 conversion (47.2%), olefin yield (10.8%), and olefin space-time yield (STY = 4.5 µmol olefin/s/gFe). The promising activity of Fe-d-C3N4-(0.3)-Py was attributed to its high concentration of surface FeCx. The correlation between surface FeCx and the STY of hydrocarbons and olefins was established. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
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