Sm(2)O(3)/Co(3)O(4) catalysts prepared by dealloying for low-temperature CO oxidation.
Sm(2)O(3)/Co(3)O(4) catalysts prepared by dealloying for low-temperature CO oxidation.
复制标题
脱合金制备Sm2O3/Co3O4低温CO氧化催化剂
DOI：
10.1039/c8ra01219a
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发表时间：
2018-03-21
期刊：
影响因子：
3.9
通讯作者：
Sun, Zhanbo
中科院分区：
文献类型：
--
作者：
Duan, Dong;Hao, Chunxi;Shi, Wenyu;Wang, Haiyang;Sun, Zhanbo
采用去合金化和焙烧相结合的方法制备了一系列Sm改性的Co 3 O 4催化剂，并以CO催化氧化反应评价了其催化活性。Sm 2 O3/Co 3 O 4催化剂由大量的纳米棒和纳米片组成，具有三维多孔载体结构。实验结果表明，在AlCo合金中加入少量Sm后，脱合金样品的催化活性得到了提高，脱合金后的Al 90 Co 9.5 Sm 0.5薄带（0.5Sm2O3/Co 3 O 4）在300 °C焙烧后，CO氧化活性最高，在135 °C时CO完全转化，且转化率几乎没有衰减，即使在催化氧化70小时后也是如此，这优于Co 3 O 4的上级。采用去合金化和焙烧相结合的方法制备了一系列Sm改性的Co 3 O 4催化剂，并以CO催化氧化为评价指标，考察了Sm改性Co 3 O 4催化剂的催化活性。
A series of Co3O4 catalysts modified by Sm were prepared by a combined dealloying and calcination approach, and the catalytic activities were evaluated using CO catalytic oxidation. The Sm2O3/Co3O4 catalysts were composed of a large number of nanorods and nanosheets, and exhibited a three-dimensional supporting structure with pores. The experimental results revealed that the addition of a small amount of Sm into the precursor AlCo alloy led to a dealloyed sample with improved catalytic activity, and the dealloyed Al90Co9.5Sm0.5 ribbons (0.5 Sm2O3/Co3O4) calcined at 300 °C showed the highest activity for CO oxidation with complete CO conversion at 135 °C, moreover, CO conversion almost no attenuation, even after 70 hours of catalytic oxidation, which is superior to that of Co3O4. The enhanced catalytic activity of the Sm2O3/Co3O4 catalyst can be attributed to the large specific surface area, more reactive oxygen species and Co3+ ion, as well as electronic interactions between Sm and Co. A series of Co3O4 catalysts modified by Sm were prepared by a combined dealloying and calcination approach, and the catalytic activities were evaluated using CO catalytic oxidation.
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影响因子：
19
作者：
Varghese, Binni;Hoong, Teo Choon;Sow, Chorng-Haur
通讯作者：
Sow, Chorng-Haur
影响因子：
1.9
作者：
Stampfl, C;Scheffler, M
通讯作者：
Scheffler, M
影响因子：
1.7
作者：
MCINTYRE, NS;JOHNSTON, DD;BROWN, JR
通讯作者：
BROWN, JR
影响因子：
2.8
作者：
Hou, Xiao-Dong;Wang, Yong-Zhao;Zhao, Yong-Xiang
通讯作者：
Zhao, Yong-Xiang
DOI：
10.1016/0368-2048(75)80047-8
发表时间：
1975-01-01
影响因子：
1.9
作者：
BONNELLE, JP;GRIMBLOT, J;DHUYSSER, A
通讯作者：
DHUYSSER, A