Research output: Contribution to journal › Article › peer-review
Catalytic behavior of bimetallic Ni–Fe systems in the decomposition of 1,2-dichloroethane. Effect of iron doping and preparation route. / Bauman, Yuri I.; Kutaev, Nikolay V.; Plyusnin, Pavel E. et al.
In: Reaction Kinetics, Mechanisms and Catalysis, Vol. 121, No. 2, 08.2017, p. 413-423.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Catalytic behavior of bimetallic Ni–Fe systems in the decomposition of 1,2-dichloroethane. Effect of iron doping and preparation route
AU - Bauman, Yuri I.
AU - Kutaev, Nikolay V.
AU - Plyusnin, Pavel E.
AU - Mishakov, Ilya V.
AU - Shubin, Yury V.
AU - Vedyagin, Aleksey A.
AU - Buyanov, Roman A.
N1 - Publisher Copyright: © 2017, Akadémiai Kiadó, Budapest, Hungary.
PY - 2017/8
Y1 - 2017/8
N2 - Model bimetallic Ni–Fe catalysts were prepared by coprecipitation from aqueous solutions of nitrates and by mechanical alloying of metal powders. Pure nickel samples subjected to the similar procedures were used as references. The obtained samples were characterized by scanning electron microscopy and X-ray diffraction analysis. Catalytic chemical vapor deposition of 1,2-dichloroethane over the catalysts was studied in a quartz flow reactor equipped with a McBain balance. It was shown that in the case of coprecipitation followed by reduction, Ni–Fe solid solution is formed within the studied range of Fe loading (1–10 wt%). Activation times of 6 min and longer are required to obtain this solid solution by the mechanical alloying method. Despite the known catalytic activity of nickel and iron in hydrocarbon decomposition in accordance with carbide cycle mechanism, iron doping was found to worsen the behavior of nickel in the studied reaction where chlorinated alkane plays a role of substrate to be decomposed. The formation of thermodynamically more stable iron chloride in relation to nickel chloride leads to deactivation of the catalyst and deceleration of the overall process.
AB - Model bimetallic Ni–Fe catalysts were prepared by coprecipitation from aqueous solutions of nitrates and by mechanical alloying of metal powders. Pure nickel samples subjected to the similar procedures were used as references. The obtained samples were characterized by scanning electron microscopy and X-ray diffraction analysis. Catalytic chemical vapor deposition of 1,2-dichloroethane over the catalysts was studied in a quartz flow reactor equipped with a McBain balance. It was shown that in the case of coprecipitation followed by reduction, Ni–Fe solid solution is formed within the studied range of Fe loading (1–10 wt%). Activation times of 6 min and longer are required to obtain this solid solution by the mechanical alloying method. Despite the known catalytic activity of nickel and iron in hydrocarbon decomposition in accordance with carbide cycle mechanism, iron doping was found to worsen the behavior of nickel in the studied reaction where chlorinated alkane plays a role of substrate to be decomposed. The formation of thermodynamically more stable iron chloride in relation to nickel chloride leads to deactivation of the catalyst and deceleration of the overall process.
KW - 1,2-Dichlorethane
KW - Bimetallic Ni–Fe systems
KW - Carbon nanofibers
KW - Decomposition
KW - Metal dusting
KW - ACTIVATION
KW - NANOCRYSTALLINE MGO
KW - Bimetallic Ni-Fe systems
KW - CO
KW - CR
KW - CU
KW - PHASE
KW - HYDRODECHLORINATION
KW - ALLOYS
KW - CARBON EROSION
KW - SUBGROUP METALS
UR - http://www.scopus.com/inward/record.url?scp=85017398392&partnerID=8YFLogxK
U2 - 10.1007/s11144-017-1180-4
DO - 10.1007/s11144-017-1180-4
M3 - Article
AN - SCOPUS:85017398392
VL - 121
SP - 413
EP - 423
JO - Reaction Kinetics, Mechanisms and Catalysis
JF - Reaction Kinetics, Mechanisms and Catalysis
SN - 1878-5190
IS - 2
ER -
ID: 9067730