共 64 条
CO2 to Liquid Fuels: Photocatalytic Conversion in a Continuous Membrane Reactor
被引:52
作者:
Pomilla, Francesca Rita
[1
,2
,3
]
Brunetti, Adele
[1
]
Marci, Giuseppe
[3
]
Garcia-Lopez, Elisa Isabel
[3
]
Fontananova, Enrica
[1
]
Palmisano, Leonardo
[3
]
Barbieri, Giuseppe
[1
]
机构:
[1] Univ Calabria, Natl Res Council, Inst Membrane Technol ITM CNR, Cubo 17C,Via Pietro Bucci, I-87036 Arcavacata Di Rende, CS, Italy
[2] Univ Calabria, Dept Environm & Chem Engn, Via Pietro Bucci, I-87036 Arcavacata Di Rende, CS, Italy
[3] Univ Palermo, Dipartimento Energia Ingn Informaz & Modelli Mate, Schiavello Grillone Photocatalysis Grp, Viale Sci, I-90128 Palermo, PA, Italy
关键词:
CO2;
photoreduction;
Carbon nitride;
Photocatalytic membrane reactor;
Continuous operation;
GRAPHITIC CARBON NITRIDE;
HYBRID PHOTOCATALYST;
HIGH-PERFORMANCE;
REDUCTION;
TIO2;
G-C3N4;
PHOTOREDUCTION;
H2O;
MICROREACTOR;
FRAMEWORKS;
D O I:
10.1021/acssuschemeng.8b01073
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
The photocatalytic reduction of CO, into value-added chemicals using sunlight is a promising approach to promote energy-bearing products, mitigating the adverse effects of anthropogenic CO2 emissions. In this work, exfoliated C3N4 was incorporated into Nafion matrix and used in a continuous photocatalytic reactor for converting CO2 into liquid fuels. Comprehensive structural and morphological diffuse reflectance spectroscopy (DRS), FT-IR, ATR-IR, and SEM measurements were performed for C3N4-loaded Nafion membrane and then compared with those of a Nafion membrane without any catalyst. The synergic effect of C3N4 organic catalyst embedded in a Nafion dense matrix and a continuous operating mode of the photoreactor was successfully accomplished for the first time, as yet absent in the literature, analyzing the reactor performance as a function of key parameters such as contact time and H2O/CO2 feed molar ratio. The reactor performance was analyzed under UV-vis light in terms of productivity, selectivity, and converted carbon. Alcohol (MeOH + EtOH) production was 32.8 mu mol g(catlyst)(-1) h(-1) corresponding to 47.6 mu mol g(catalyst)(-1) h(-1) of total converted carbon per gram of catalyst at the best operating conditions. So far, this value results as higher than most of the literature values reported up to date. Moreover, the membrane reactor converted at least 10 times more carbon than the batch system, as a result of the catalyst embedding in a Nafion matrix.
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页码:8743 / 8753
页数:21
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