TY - JOUR

T1 - Promoting Effect of Co, Cu, Cr and Fe on Activity of Ni-Based Alloys in Catalytic Processing of Chlorinated Hydrocarbons

AU - Bauman, Yuri I.

AU - Mishakov, Ilya V.

AU - Vedyagin, Aleksey A.

AU - Rudnev, Aleksandr V.

AU - Plyusnin, Pavel E.

AU - Shubin, Yury V.

AU - Buyanov, Roman A.

PY - 2017/2

Y1 - 2017/2

N2 - A series of sponge-like Ni1−xMx(M = Cu, Co, Cr, Fe; x = 0.00–0.10) alloys was prepared via synthetic routes with subsequent reduction in H2atmosphere at 800–1000 °C. Formation of Ni-based solid solutions with face-cantered cubic (fcc) lattice of nickel was proven by X-ray diffraction analysis for all prepared samples. Ni1−xMxalloys were explored as precursors for self-organizing catalysts active in processing of 1,2-dichloroethane into carbon nanomaterial (CNM). According to kinetic studies of CNM growth performed at 600 °C, the catalytic activity of Ni1−xMxsamples changes as follows: Cr > Co–Cu ≫ Fe. Ni–Cr sample showed rather stable performance during 4 h whereas Ni–Co, Ni–Cu and Ni (reference) samples underwent rapid deactivation after ~150 min of reaction. The presence of the residual amount of Cr (0.5 at.%) found by energy dispersive X-ray microanalysis method in the composition of active Ni particles responsible for the growth of CNM is considered to be a key factor providing the stable catalytic performance. The obtained carbon product is represented by well-ordered segmented fibers (0.4–0.8 μm in diameter) and characterized with comparatively high textural parameters (surface area 290–330 m2/g, pore volume 0.43–0.57 cm3/g).

AB - A series of sponge-like Ni1−xMx(M = Cu, Co, Cr, Fe; x = 0.00–0.10) alloys was prepared via synthetic routes with subsequent reduction in H2atmosphere at 800–1000 °C. Formation of Ni-based solid solutions with face-cantered cubic (fcc) lattice of nickel was proven by X-ray diffraction analysis for all prepared samples. Ni1−xMxalloys were explored as precursors for self-organizing catalysts active in processing of 1,2-dichloroethane into carbon nanomaterial (CNM). According to kinetic studies of CNM growth performed at 600 °C, the catalytic activity of Ni1−xMxsamples changes as follows: Cr > Co–Cu ≫ Fe. Ni–Cr sample showed rather stable performance during 4 h whereas Ni–Co, Ni–Cu and Ni (reference) samples underwent rapid deactivation after ~150 min of reaction. The presence of the residual amount of Cr (0.5 at.%) found by energy dispersive X-ray microanalysis method in the composition of active Ni particles responsible for the growth of CNM is considered to be a key factor providing the stable catalytic performance. The obtained carbon product is represented by well-ordered segmented fibers (0.4–0.8 μm in diameter) and characterized with comparatively high textural parameters (surface area 290–330 m2/g, pore volume 0.43–0.57 cm3/g).

KW - 1,2-Dichloroethane

KW - Catalytic decomposition

KW - Chlorinated hydrocarbons

KW - Metal dusting

KW - Nickel and its alloys

KW - Segmented carbon fibers

KW - Self-organizing catalysts

KW - NI-K/AL2O3 CATALYSTS

KW - HYDROGENATION

KW - DECOMPOSITION

KW - MILD CONDITIONS

KW - HYDRODECHLORINATION

KW - CARBON NANOFIBERS

KW - WATER

UR - http://www.scopus.com/inward/record.url?scp=85013945435&partnerID=8YFLogxK

U2 - 10.1007/s11244-016-0729-1

DO - 10.1007/s11244-016-0729-1

M3 - Article

AN - SCOPUS:85013945435

VL - 60

SP - 171

EP - 177

JO - Topics in Catalysis

JF - Topics in Catalysis

SN - 1022-5528

IS - 1-2

ER -