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.

Authors :: To, Dien-Thien
Juan, Joon Ching
Tsai, Meng-Hsuan
Wang, Chia-Hsin
Pao, Chih-Wen
Chen, Chi-Liang
Lin, Yu-Chuan
Source :: Catalysis Surveys from Asia; Sep2023, Vol. 27 Issue 3, p260-269, 10p
Publication Year :: 2023
Abstract: FeC<subscript>x</subscript> catalysts (Fe-CN-Py) were synthesized by co-pyrolyzing the mixture of iron nitrate and a CN source (melamine, bulk g-C<subscript>3</subscript>N<subscript>4</subscript> (b-C<subscript>3</subscript>N<subscript>4</subscript>), or defective g-C<subscript>3</subscript>N<subscript>4</subscript> (d-C<subscript>3</subscript>N<subscript>4</subscript>)). The physicochemical properties of Fe-CN-Py catalysts and their activities of CO<subscript>2</subscript> hydrogenation to light hydrocarbon (C<subscript>2</subscript>-C<subscript>6</subscript>) were analyzed. The results indicated that Fe-d-C<subscript>3</subscript>N<subscript>4</subscript>-(0.3)-Py is the most promising with the highest CO<subscript>2</subscript> conversion (47.2%), olefin yield (10.8%), and olefin space-time yield (STY = 4.5 µmol olefin/s/g<subscript>Fe</subscript>). The promising activity of Fe-d-C<subscript>3</subscript>N<subscript>4</subscript>-(0.3)-Py was attributed to its high concentration of surface FeC<subscript>x</subscript>. The correlation between surface FeC<subscript>x</subscript> and the STY of hydrocarbons and olefins was established. [ABSTRACT FROM AUTHOR]

Subjects :: FERRIC nitrate
HYDROCARBONS
CATALYSTS
ALKENES
CEMENTITE
MELAMINE

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