Promoting Effect of Co, Cu, Cr and Fe on Activity of Ni-Based Alloys in Catalytic Processing of Chlorinated Hydrocarbons
| Parent link: | Topics in Catalysis Vol. 60, iss. 1-2.— 2017.— [P. 171-177] |
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| Corporate Authors: | , |
| Other Authors: | , , , , , , |
| Summary: | Title screen 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 H2 atmosphere 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-xMx alloys 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−xMx samples 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 [mu]m in diameter) and characterized with comparatively high textural parameters (surface area 290-330 m2/g, pore volume 0.43-0.57 cm3/g). Режим доступа: по договору с организацией-держателем ресурса |
| Language: | English |
| Published: |
2017
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| Subjects: | |
| Online Access: | https://doi.org/10.1007/s11244-016-0729-1 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656018 |
| Summary: | Title screen 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 H2 atmosphere 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-xMx alloys 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−xMx samples 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 [mu]m in diameter) and characterized with comparatively high textural parameters (surface area 290-330 m2/g, pore volume 0.43-0.57 cm3/g). Режим доступа: по договору с организацией-держателем ресурса |
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| DOI: | 10.1007/s11244-016-0729-1 |