WU Luyao,HAN Chun,XU Yefan,et al.Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(2):66-74.
WU Luyao,HAN Chun,XU Yefan,et al.Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(2):66-74. DOI: 10.12434/j.issn.2097-2547.20250151.
Study on catalytic performances of Ce and Mn modified Co/AC for producing low carbon alcohols from syngas
alcohols) from syngas have received extensive attention due to its excellent economic property. The Co-based catalyst is one of the main catalysts for producing low-carbon alcohols from syngas
but the Co-based catalyst currently has the problem of low selectivity for low-carbon alcohols. Using the co-precipitation method
Ce and Mn modified Co/AC catalysts (Ce-Co/AC a
nd Mn-Co/AC with Co mass fraction of 15.0% and Ce or Mn mass fraction of 7.5%) were prepared
respectively. The structures of the catalysts were characterized by XRD
N
2
adsorption/desorption and H
2
-TPR
and the catalytic performances of catalysts for producing low-carbon alcohols from syngas (calculating by the average values after 7 d of reaction) under the conditions of temperature of 250 ℃
pressure of 3.0 MPa and syngas (
V
(H
2
):
V
(CO) = 2:1) flow rate of 75 mL/min were evaluated. The results show that compared with Co/AC
the introduction of the additives Ce and Mn both can improve the dispersion of Co species on the catalyst surface and reduce the crystal size of Co
0
species. Among them
the content (mole fraction) of surface Co
0
species in Mn-Co/AC is 66.0%. Under the experimental conditions
the CO conversion rate of Ce-Co/AC is 2.29%
and the total alcohol selectivity is 32.03% and
m
(low-carbon alcohols)/
m
(total alcohols) is 68.06%. Mn-Co/AC exhibits better catalytic performance with CO conversion rate of 3.99%
total alcohol selectivity of 33.23% and
m
(low-carbon alcohols)/
m
(total alcohols) of 79.36%.
关键词
Keywords
references
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Related Institution
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