Nanocarbon-dependent synthesis of one-dimensional bead-chain-like β-SiC

Bin Zhao; Biyun Yang; Tingyu Wang; Dongfeng Sun; Yongzhen Hu; Ruixing Li; Shu Yin; Junping Li; Zhihai Feng; Huiping Duan; Qing Tang; Tsugio Sato

doi:10.1016/j.powtec.2013.06.003

Nanocarbon-dependent synthesis of one-dimensional bead-chain-like β-SiC

Bin Zhao, Biyun Yang, Tingyu Wang, Dongfeng Sun, Yongzhen Hu, Ruixing Li, Shu Yin, Junping Li, Zhihai Feng, Huiping Duan, Qing Tang, Tsugio Sato

IMRAM - Division of Inorganic Material Research

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Thermodynamically, SiO₂ should react with carbon to form CO and SiC at and above a temperature of 1515°C. However, this reaction is incomplete at 1550°C, even with the use of metastable reactants, such as amorphous SiO₂ and active carbon powders. In contrast, complete decomposition of SiO₂ is achieved at 1450°C using nanocarbon powders instead of active carbon. Additionally, to clarify the effects of size and morphology of SiO₂ on the SiC product, we synthesized different SiO₂ precursors. Experimental results reveal that the effects of porous SiO₂ on both the size and morphology of SiC particles are evident, but not a decrease in carbothermal reduction temperature. Nanocarbon powders reduce the temperature required for the reaction and also strongly affect the transformation kinetics.

Original language	English
Pages (from-to)	487-491
Number of pages	5
Journal	Powder Technology
Volume	246
DOIs	https://doi.org/10.1016/j.powtec.2013.06.003
Publication status	Published - 2013 Sept

Keywords

β-SiC
Amorphous materials
Carbothermal reduction
Crystal morphology
Nanocarbon

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10.1016/j.powtec.2013.06.003

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title = "Nanocarbon-dependent synthesis of one-dimensional bead-chain-like β-SiC",

abstract = "Thermodynamically, SiO2 should react with carbon to form CO and SiC at and above a temperature of 1515°C. However, this reaction is incomplete at 1550°C, even with the use of metastable reactants, such as amorphous SiO2 and active carbon powders. In contrast, complete decomposition of SiO2 is achieved at 1450°C using nanocarbon powders instead of active carbon. Additionally, to clarify the effects of size and morphology of SiO2 on the SiC product, we synthesized different SiO2 precursors. Experimental results reveal that the effects of porous SiO2 on both the size and morphology of SiC particles are evident, but not a decrease in carbothermal reduction temperature. Nanocarbon powders reduce the temperature required for the reaction and also strongly affect the transformation kinetics.",

keywords = "β-SiC, Amorphous materials, Carbothermal reduction, Crystal morphology, Nanocarbon",

author = "Bin Zhao and Biyun Yang and Tingyu Wang and Dongfeng Sun and Yongzhen Hu and Ruixing Li and Shu Yin and Junping Li and Zhihai Feng and Huiping Duan and Qing Tang and Tsugio Sato",

note = "Funding Information: The authors appreciate the financial support from the National Science Foundation of China ( NSFC50974007 ); the Scientific Research Starting Foundation for Returned Overseas Chinese Scholars , Ministry of Education ; the Start-Up Fund for High-End Returned Overseas Talents (Renshetinghan 2010, No. 411), Ministry of Human Resources and Social Security , China and the Lab-Installation Foundation of Beihang University for New Teachers .",

year = "2013",

month = sep,

doi = "10.1016/j.powtec.2013.06.003",

language = "English",

volume = "246",

pages = "487--491",

journal = "Powder Technology",

issn = "0032-5910",

publisher = "Elsevier",

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TY - JOUR

T1 - Nanocarbon-dependent synthesis of one-dimensional bead-chain-like β-SiC

AU - Zhao, Bin

AU - Yang, Biyun

AU - Wang, Tingyu

AU - Sun, Dongfeng

AU - Hu, Yongzhen

AU - Li, Ruixing

AU - Yin, Shu

AU - Li, Junping

AU - Feng, Zhihai

AU - Duan, Huiping

AU - Tang, Qing

AU - Sato, Tsugio

N1 - Funding Information: The authors appreciate the financial support from the National Science Foundation of China ( NSFC50974007 ); the Scientific Research Starting Foundation for Returned Overseas Chinese Scholars , Ministry of Education ; the Start-Up Fund for High-End Returned Overseas Talents (Renshetinghan 2010, No. 411), Ministry of Human Resources and Social Security , China and the Lab-Installation Foundation of Beihang University for New Teachers .

PY - 2013/9

Y1 - 2013/9

N2 - Thermodynamically, SiO2 should react with carbon to form CO and SiC at and above a temperature of 1515°C. However, this reaction is incomplete at 1550°C, even with the use of metastable reactants, such as amorphous SiO2 and active carbon powders. In contrast, complete decomposition of SiO2 is achieved at 1450°C using nanocarbon powders instead of active carbon. Additionally, to clarify the effects of size and morphology of SiO2 on the SiC product, we synthesized different SiO2 precursors. Experimental results reveal that the effects of porous SiO2 on both the size and morphology of SiC particles are evident, but not a decrease in carbothermal reduction temperature. Nanocarbon powders reduce the temperature required for the reaction and also strongly affect the transformation kinetics.

AB - Thermodynamically, SiO2 should react with carbon to form CO and SiC at and above a temperature of 1515°C. However, this reaction is incomplete at 1550°C, even with the use of metastable reactants, such as amorphous SiO2 and active carbon powders. In contrast, complete decomposition of SiO2 is achieved at 1450°C using nanocarbon powders instead of active carbon. Additionally, to clarify the effects of size and morphology of SiO2 on the SiC product, we synthesized different SiO2 precursors. Experimental results reveal that the effects of porous SiO2 on both the size and morphology of SiC particles are evident, but not a decrease in carbothermal reduction temperature. Nanocarbon powders reduce the temperature required for the reaction and also strongly affect the transformation kinetics.

KW - β-SiC

KW - Amorphous materials

KW - Carbothermal reduction

KW - Crystal morphology

KW - Nanocarbon

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VL - 246

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JO - Powder Technology

JF - Powder Technology

ER -

Nanocarbon-dependent synthesis of one-dimensional bead-chain-like β-SiC

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