TY - JOUR
T1 - Yolk-Shell-Structured CuO−ZnO−In2O3 Trimetallic Oxide Mesocrystal Microspheres as an Efficient Catalyst for Trichlorosilane Production
AU - Li, Xin
AU - Ji, Yongjun
AU - Li, Jing
AU - Zhang, Yu
AU - Liu, Hezhi
AU - Li, Qiongguang
AU - Jia, Lihua
AU - Guo, Xiangfeng
AU - Zhong, Ziyi
AU - Su, Fabing
N1 - Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/3/19
Y1 - 2020/3/19
N2 - Trichlorosilane (TCS), the primary chemical feedstock for production of high-purity Si used in Si-based solar cells, is currently manufactured industrially via a non-catalytic hydrochlorination of metallurgical Si. This process generates a huge amount of undesirable silicon tetrachloride (STC) byproduct. Here we report the synthesis of yolk-shell-structured CuO−ZnO−In2O3 trimetallic oxide mesocrystal microspheres that can be employed as an efficient catalyst to produce TCS catalytically. The CuO−ZnO−In2O3 microspheres with multiple hetero-interfaces were prepared using a facile solvothermal reaction followed by calcination. We found that differing from a single CuO mesocrystal, the electronic density on Cu atoms in the CuO phase within CuO−ZnO and CuO−ZnO−In2O3 can be tuned by varying the composition. When used as a catalyst for Si hydrochlorination reaction to produce TCS, CuO−ZnO−In2O3 shows excellent catalytic performance with very high Si conversion and TCS selectivity. Under the same reaction conditions, the TCS yield increased 13 times relative to the catalyst-free process. This work demonstrates the possibility to decrease the amount of STC needed for the catalytic manufacture of TCS, and provides an approach to the facile synthesis of multi-component mesocrystal materials with a specific structure.
AB - Trichlorosilane (TCS), the primary chemical feedstock for production of high-purity Si used in Si-based solar cells, is currently manufactured industrially via a non-catalytic hydrochlorination of metallurgical Si. This process generates a huge amount of undesirable silicon tetrachloride (STC) byproduct. Here we report the synthesis of yolk-shell-structured CuO−ZnO−In2O3 trimetallic oxide mesocrystal microspheres that can be employed as an efficient catalyst to produce TCS catalytically. The CuO−ZnO−In2O3 microspheres with multiple hetero-interfaces were prepared using a facile solvothermal reaction followed by calcination. We found that differing from a single CuO mesocrystal, the electronic density on Cu atoms in the CuO phase within CuO−ZnO and CuO−ZnO−In2O3 can be tuned by varying the composition. When used as a catalyst for Si hydrochlorination reaction to produce TCS, CuO−ZnO−In2O3 shows excellent catalytic performance with very high Si conversion and TCS selectivity. Under the same reaction conditions, the TCS yield increased 13 times relative to the catalyst-free process. This work demonstrates the possibility to decrease the amount of STC needed for the catalytic manufacture of TCS, and provides an approach to the facile synthesis of multi-component mesocrystal materials with a specific structure.
KW - catalytic production of trichlorosilane
KW - interfacial charge transfer
KW - superstructure
KW - trimetallic oxide mesocrystals
KW - yolk-shell structure
UR - http://www.scopus.com/inward/record.url?scp=85082309010&partnerID=8YFLogxK
U2 - 10.1002/cctc.201902330
DO - 10.1002/cctc.201902330
M3 - 文章
AN - SCOPUS:85082309010
SN - 1867-3880
VL - 12
SP - 1596
EP - 1602
JO - ChemCatChem
JF - ChemCatChem
IS - 6
ER -