Reactor Design for CO2 Photo-Hydrogenation toward Solar Fuels under Ambient Temperature and PressureReportar como inadecuado


Reactor Design for CO2 Photo-Hydrogenation toward Solar Fuels under Ambient Temperature and Pressure


Reactor Design for CO2 Photo-Hydrogenation toward Solar Fuels under Ambient Temperature and Pressure - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1

Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan

2

Faculty of Chemical and Environmental Engineering, Lac Hong University, 812431, No. 10 Huynh Van Nghe, Buu Long, Bien Hoa, Dong Nai, Viet Nam

3

Chung-Shan Institute of Science and Technology, Tao Yuan 32599, Taiwan

4

Institute of Environmental Technology, VŠB-Technical University of Ostrava, 17. listopadu 15-2172, 708 33 Ostrava-Poruba, Czech Republic





*

Author to whom correspondence should be addressed.



Academic Editor: Rajendra S. Ghadwal

Abstract Photo-hydrogenation of carbon dioxide CO2 is a green and promising technology and has received much attention recently. This technique could convert solar energy under ambient temperature and pressure into desirable and sustainable solar fuels, such as methanol CH3OH, methane CH4, and formic acid HCOOH. It is worthwhile to mention that this direction can not only potentially depress atmospheric CO2, but also weaken dependence on fossil fuel. Herein, 1 wt % Pt-CuAlGaO4 photocatalyst was successfully synthesized and fully characterized by ultraviolet-visible light UV-vis spectroscopy, X-ray diffraction XRD, Field emission scanning electron microscopy using energy dispersive spectroscopy analysis FE-SEM-EDS, transmission electron microscopy TEM, X-ray photoelectron spectroscopy XPS, and Brunauer-Emmett-Teller BET, respectively. Three kinds of experimental photo-hydrogenation of CO2 in the gas phase, liquid phase, and gas-liquid phase, correspondingly, were conducted under different H2 partial pressures. The remarkable result has been observed in the gas-liquid phase. Additionally, increasing the partial pressure of H2 would enhance the yield of product. However, when an extra amount of H2 is supplied, it might compete with CO2 for occupying the active sites, resulting in a negative effect on CO2 photo-hydrogenation. For liquid and gas-liquid phases, CH3OH is the major product. Maximum total hydrocarbons 8.302 µmol·g−1 is achieved in the gas-liquid phase. View Full-Text

Keywords: CO2 reduction; Pt-CuAlGaO4; photo-hydrogenation; photocatalysis; solar fuels CO2 reduction; Pt-CuAlGaO4; photo-hydrogenation; photocatalysis; solar fuels





Autor: Chun-Ying Chen 1, Joseph Che-Chin Yu 1, Van-Huy Nguyen 2, Jeffrey Chi-Sheng Wu 1,* , Wei-Hon Wang 3 and Kamila Kočí 4

Fuente: http://mdpi.com/



DESCARGAR PDF




Documentos relacionados