Transforming carbon dioxide into jet fuel using an organic combustion-synthesized Fe-Mn-K catalyst Benzhen Yao, Tiancun Xiao, Ofentse A. Makgae, Xiangyu Jie, Sergio Gonzalez-Cortes, Shaoliang Guan, Angus I. Kirkland, Jonathan R. Dilworth, Hamid A. Al-Megren, Saeed M. Alshihri, Peter J. Dobson, Gari P. Owen, John M. Thomas & Peter P. Edwards Nature Communications volume 11, Article number: 6395 (2020)
二酸化炭素から炭化水素への合成方法
一般的に知られている、二酸化炭素を炭化水素に変換する方法は2つです。1つは、二酸化炭素を一酸化炭素(CO)やメタノールに変換して、液体の炭化水素にする間接的な方法です。もう一つは二酸化炭素を一酸化炭素(CO)に逆水性ガスシフト反応(reverse water gas shift, RWGS反応)を利用して変換したあと、フィッシャー・トロプシュ反応 (Fischer-Tropsch synthesis, FTS)によって炭素鎖をもつ炭化水素を合成する直接的な方法です。
a % conversion of CO2 and H2 as a function of reaction time for the hydrogenation of CO2. b Selectivity of various hydrocarbon products with reaction time for the hydrogenation of CO2. c Molar ratio of olefin-to-paraffin for the C2–C4 range with reaction time for the hydrogenation of CO2. d ASF plot and α values at reaction time of 20 h. e Conversion and CO selectivity of CO2 hydrogenation for a reaction time of 20 h over different catalysts. f Products selectivities of CO2 hydrogenation for a reaction time of 20 h over different catalysts. g GC-MS total ion chromatogram (TIC) of the hydrocarbon fuel from the hydrogenation of CO2 on a Fe–Mn–K catalyst. The jet fuel range hydrocarbons (C8 to C16) are shown.
a Powder XRD spectra of the catalyst precursor and both the activated and the used catalyst. The corresponding JCPDS numbers are, for Fe2O3: 00-020-0508; χ-Fe5C2: 00-024-0081; Fe3O4: 03-065-3107; b XPS survey spectrum of the Fe–Mn–K catalyst; c High-resolution XPS spectra in the region of the Fe 2p peak on the Fe–Mn–K catalyst; d XPS spectra of the Mn 2p on the Fe–Mn–K catalyst; e XPS spectra of the O 1s on the Fe–Mn-K catalyst; f XPS spectra of the C 1s on the Fe–Mn–K catalyst.
The CO2 hydrogenation to jet fuel range hydrocarbons process through a Tandem Mechanism in which the Reverse-Water Gas Shift reaction (RWGS) and Fischer-Tropsch synthesis (FTS) reaction are catalysed by Fe3O4 and χ-Fe5C2 respectively.
Transforming carbon dioxide into jet fuel using an organic combustion-synthesized Fe-Mn-K catalyst Benzhen Yao, Tiancun Xiao, Ofentse A. Makgae, Xiangyu Jie, Sergio Gonzalez-Cortes, Shaoliang Guan, Angus I. Kirkland, Jonathan R. Dilworth, Hamid A. Al-Megren, Saeed M. Alshihri, Peter J. Dobson, Gari P. Owen, John M. Thomas & Peter P. Edwards Nature Communications volume 11, Article number: 6395 (2020)