构建稳定的CuO/La2Sn2O7催化剂用于碳烟颗粒燃烧: CuO在La2Sn2O7烧绿石复合氧化物载体上的单层分散行为

doi:10.1016/S1872-2067(20)63657-9

催化学报 ›› 2021, Vol. 42 ›› Issue (3): 396-408.DOI: 10.1016/S1872-2067(20)63657-9

构建稳定的CuO/La₂Sn₂O₇催化剂用于碳烟颗粒燃烧: CuO在La₂Sn₂O₇烧绿石复合氧化物载体上的单层分散行为

冯小辉, 刘瑞, 徐香兰, 佟云艳, 张诗婧, 何佳城, 徐骏伟, 方修忠, 王翔^*()

南昌大学化学学院,江西省环境与能源催化重点实验室,江西南昌330031

收稿日期:2020-05-11 接受日期:2020-06-20 出版日期:2021-03-18 发布日期:2021-01-23
通讯作者: 王翔
基金资助:
国家自然科学基金(21962009);国家自然科学基金(21567016);国家自然科学基金(21666020);国家重点研发计划(2016YFC0209302);江西省自然科学基金(20181ACB20005);江西省自然科学基金(20171BAB213013);江西省自然科学基金(20181BAB203017);江西省环境与能源催化重点实验室(20181BCD40004)

Stable CuO/La₂Sn₂O₇ catalysts for soot combustion: Study on the monolayer dispersion behavior of CuO over a La₂Sn₂O₇ pyrochlore support

Xiaohui Feng, Rui Liu, Xianglan Xu, Yunyan Tong, Shijing Zhang, Jiacheng He, Junwei Xu, Xiuzhong Fang, Xiang Wang^*()

Key Laboratory of Jiangxi Province for Environment and Energy Catalysis,College of Chemistry,Nanchang University,Nanchang 330031,Jiangxi,China

Received:2020-05-11 Accepted:2020-06-20 Online:2021-03-18 Published:2021-01-23
Contact: Xiang Wang
About author:^*Tel:+86-15979149877;E-mail:xwang23@ncu.edu.cn
Supported by:
National Natural Science Foundation of China(21962009);National Natural Science Foundation of China(21567016);National Natural Science Foundation of China(21666020);National Key Research and Development Program of China(2016YFC0209302);Natural Science Foundation of Jiangxi Province(20181ACB20005);Natural Science Foundation of Jiangxi Province(20171BAB213013);Natural Science Foundation of Jiangxi Province(20181BAB203017);Key Laboratory Foundation of Jiangxi Province for Environment and Energy Catalysis(20181BCD40004)

摘要/Abstract

摘要：

柴油车尾气排放的碳烟颗粒造成了日益严重的环境污染.目前催化燃烧是消除碳烟颗粒污染的有效技术. 针对金属氧化物负载体系,20世纪70年代末谢有畅教授等人提出了单层分散理论,是指导设计高效负载催化剂的一个重要思想,已被科研工作者们普遍接受. 当负载催化剂体系用于某个特定反应时,通常会表现出单层分散阈值效应,即负载的活性组分含量为单层分散阈值时,催化剂往往具有最好的活性和选择性.
为探究金属氧化物在复合氧化物载体上的分散行为,并期望研制出性能优良的碳烟颗粒消除催化剂,本文制备了系列不同负载量的CuO/La₂Sn₂O₇催化剂,并把实验表征技术和DFT计算方法相结合,对其构效关系进行了研究. 结果表明,CuO可自发分散在La₂Sn₂O₇烧绿石载体,其单层分散容量为1.90 mmol CuO/100 m² La₂Sn₂O₇. CuO负载量不高于该容量时,以亚单层或单层分散状态存在. XPS、Raman、Bader电荷和DOS分析证明,亚单层/单层CuO中的Cu²⁺离子可把其电荷选择性地传递给La₂Sn₂O₇烧绿石载体结构中B位的Sn⁴⁺离子,因而与载体产生强相互作用. 反之,Cu²⁺离子与载体结构中A位的La³⁺离子之间无电荷转移,不产生作用. 这表明在含多种金属离子的复合氧化物载体上,被负载的金属氧化物可优先与载体中的一种金属离子产生相互作用. Raman、原位DRIFTS和XPS结果表明,在界面上形成的O₂^-和O₂^2-亲电氧离子是CuO/La₂Sn₂O₇催化剂表面的活性中心,其含量决定了催化剂碳烟颗粒燃烧的活性. 在CuO负载量低于单层分散容量时,这些表面活性亲电氧离子含量随着CuO的负载量升高而增加,直至单层分散容量时达到最大. 在CuO负载量高于单层分散容量时,CuO微晶开始形成,并对表面活性亲电氧离子的生成产生负面影响. 上述结果表明,CuO/La₂Sn₂O₇催化剂用于碳烟颗粒燃烧具有明显的单层分散阈值效应; 并可通过在La₂Sn₂O₇载体表面负载单层分散量的CuO获得活性最佳的催化剂.

关键词: CuO/La₂Sn₂O₇催化剂, 碳烟燃烧, DFT计算, 优先相互作用, 烧绿石载体上的单层分散, O₂ ^-和O₂ ^2-活性位点

Abstract:

To understand the dispersion behavior of metal oxides on composite oxide supports and with the expectation of developing more feasible catalysts for soot oxidation,CuO/La2Sn2O7 samples containing varied CuO loadings were fabricated and characterized by different techniques and density functional theory calculations. In these catalysts,a spontaneous dispersion of CuO on the La2Sn2O7 pyrochlore support formed,having a monolayer dispersion capacity of 1.90 mmol CuO/100 m2 La2Sn2O7 surface. When loaded below this capacity,CuO exists in a sub-monolayer or monolayer state. X-ray photoelectron spectroscopy (XPS),Raman spectroscopy,and Bader charge and density of states analyses indicate that there are strong interactions between the sub-monolayer/monolayer CuO and the La2Sn2O7 support,mainly through the donation of electrons from Cu to Sn at the B-sites of the structure. In contrast,Cu has negligible interactions with La at the A-sites. This suggests that,in composite oxide supports containing multiple metals,the supported metal oxide interacts preferentially with one kind of metal cation in the support. The Raman,in situ diffuse reflectance infrared Fourier transform spectroscopy,and XPS results confirmed the formation of both O2- and O22- as the active sites on the surfaces of the CuO/La2Sn2O7 catalysts,and the concentration of these active species determines the soot combustion activity. The number of active oxygen anions increased with increase in CuO loading until the monolayer dispersion capacity was reached. Above the monolayer dispersion capacity,microsized CuO crystallites formed,and these had a negative effect on the generation of active surface oxygen sites. In summary,a highly active catalyst can be prepared by covering the surface of the La2Sn2O7 support with a CuO monolayer.

Key words: CuO/La2Sn2O7 catalyst, Soot combustion, DFT calculations, Preferential interaction, Monolayer dispersion on pyrochlore support

冯小辉, 刘瑞, 徐香兰, 佟云艳, 张诗婧, 何佳城, 徐骏伟, 方修忠, 王翔. 构建稳定的CuO/La₂Sn₂O₇催化剂用于碳烟颗粒燃烧: CuO在La₂Sn₂O₇烧绿石复合氧化物载体上的单层分散行为[J]. 催化学报, 2021, 42(3): 396-408.

Xiaohui Feng, Rui Liu, Xianglan Xu, Yunyan Tong, Shijing Zhang, Jiacheng He, Junwei Xu, Xiuzhong Fang, Xiang Wang. Stable CuO/La₂Sn₂O₇ catalysts for soot combustion: Study on the monolayer dispersion behavior of CuO over a La₂Sn₂O₇ pyrochlore support[J]. Chinese Journal of Catalysis, 2021, 42(3): 396-408.

×
扫码分享

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.cjcatal.com/CN/10.1016/S1872-2067(20)63657-9

https://www.cjcatal.com/CN/Y2021/V42/I3/396

图/表 15

参考文献

[1]	M. Cortés-Reyes, C. Herrera, M. Á. Larrubia, L. J. Alemany, Appl. Catal. B, 2016,193, 110-120.
[2]	R. Kimura, J. Wakabayashi, S. P. Elangovan, M. Ogura, T. Okubo, J. Am. Chem. Soc., 2008,130, 12844-12845.
[3]	Y. F. Yu, J. L. Ren, D. S. Liu, M. Meng, ACS Catal., 2014,4, 934-941.
[4]	A. Bueno-López, Appl. Catal. B, 2014,146, 1-11.
[5]	A. M. Hernandez-Gimenez, D. L. Castello, A. Bueno-Lopez, Chem. Pap., 2014,68, 1154-1168.
[6]	M. Piumetti, S. Bensaid, N. Russo, D. Fino, Appl. Catal. B, 2015,165, 742-751.
[7]	X. Wu, F. Lin, H. Xu, D. Weng Appl. Catal. B, 2010,96, 101-109.
[8]	T. Andana, M. Piumetti, S. Bensaid, L. Veyre, C. Thieuleux, N. Russo, D. Fino, E. A. Quadrelli, R. Pirone, Appl. Catal. B, 2017,209, 295-310.
[9]	R. Matarrese, L. Castoldi, L. Lietti, P. Forzatti, Catal. Today, 2008,136, 11-17.
[10]	G. Pecchi, B. Cabrera, A. Buljan, E. J. Delgado, A. L. Gordon, R. Jimenez, J. Alloys Compd., 2013,551, 255-261.
[11]	S. Putla, M. H. Amin, B. M. Reddy, A. Nafady, K. A. Al Farhan, S. K. Bhargava, ACS Appl. Mater. Interfaces, 2015,7, 16525-16535.
[12]	J. Liu, Z. Zhao, C. Xu, J. Liu, Chin. J. Catal., 2019,40, 1438-1487.
[13]	Y. Wei, J. Liu, Z. Zhao, G. Jiang, A. Duan, H. He, X. Wang, Chin. J. Catal., 2010,31, 283-288.
[14]	J. Zheng, J. Liu, Z. Zhao, J. Xu, A. Duan, G. Jiang, Catal. Today, 2012,191, 146-153.
[15]	L. Tang, Z. Zhao, K. Li, X. Yu, Y. Wei, J. Liu, Y. Peng, Y. Li, Y. Chen, Catal. Today, 2020,339, 159-173.
[16]	L. J. Ai, Z. P. Wang, C. C. Cui, W. Liu, L. G. Wang, Materials, 2018,11, 16.
[17]	Z. Wang, H. Zhu, L. Ai, X. Liu, M. Lv, L. Wang, Z. Ma, Z. Zhang, J. Colloid Interface Sci., Colloid Interface Sci., 2016,478, 209-216.
[18]	I. Atribak, A. Bueno-Lopez, A. Garcia-Garcia, Top. Catal., 2009,52, 2088.
[19]	K. Nagase, Y. Zheng, Y. Kodama, J. Kakuta, J. Catal., 1999,187, 123-130.
[20]	G. G. Jernigan, G. A. Somorjai, J. Catal., 1994,147, 567-577.
[21]	A. B. Lamb, W. C. Bray, J. C. W. Frazer, J. Ind. Eng. Chem., 1920,12, 213-221.
[22]	C.-C. Chien, T.-J. Huang, Ind. Eng. Chem. Res., 1995,34, 1952-1959.
[23]	K. Nakagawa, T. Ohshima, Y. Tezuka, M. Katayama, M. Katoh, S. Sugiyama, Catal. Today, Today, 2015,246, 67-71.
[24]	F. E. López-Suárez, Bueno-López,M. J. Illán-Gómez, J. Trawczynski, A. Appl. Catal. A, 2014,485, 214-221.
[25]	B. M. Reddy, K. N. Rao,, Catal. Commun., 2009,10, 1350-1353.
[26]	G. Zhang, H. Chen, Y. Gong, Z. Shu, D. He, Y. Zhu, X. Zhou, X. Fan, H. Zhang, J. Shi, Catal. Commun., 2013,35, 105-109.
[27]	Y. Yu, M. Meng, F. Dai, Nanoscale, 2013,5, 904-909.
[28]	J. Shen, C. Rao, Z. Fu, X. Feng, J. Liu, X. Fan, H. Peng, X. Xu, C. Tan, X. Wang, Appl. Surf. Sci., 2018,453, 204-213.
[29]	J. Shen, X. Feng, R. Liu, X. Xu, C. Rao, J. Liu, X. Fang, C. Tan, Y. Xie, X. Wang, Chin. J. Catal., 2019,40, 905-916.
[30]	F. Zhong, L. Shi, J. Zhao, G. Cai, Y. Zheng, Y. Xiao, J. Long, Ceram. Int., 2017,43, 11799-11806.
[31]	D. Liang, H. Liu, N. Liu, L. Ling, Y. Han, L. Zhang, C. Zhang, Ceram. Int., 2016,42, 4562-4566.
[32]	J. Xu, R. Xi, X. Xu, Y. Zhang, X. Feng, X. Fang, X. Wang, J. Rare Earths, 2020. doi: 10.1016/j.jre.2020.01.002.
[33]	L. J. Ai, Z. P. Wang, Y. B. Gao, C. C. Cui, B. Q. Wang, W. Liu, L. G. Wang, J. Mater. Sci., 2019,54, 4495-4510.
[34]	J. Zhang, D. Wang, L. Lai, X. Fang, J. Xu, X. Xu, X. Zhang, J. Liu, H. Peng, X. Wang, Catal. Today, 2019,327, 168-176.
[35]	J. W. Xu, Y. Zhang, X. L. Xu, X. Z. Fang, R. Xi, Y. M. Liu, R. Y. Zheng, X. Wang, ACS Catal., 2019,9, 4030-4045.
[36]	X. Zhang, X. Fang, X. Feng, X. Li, W. Liu, X. Xu, N. Zhang, Z. Gao, X. Wang, W. Zhou, Catal. Sci. Technol., 2017,7, 2729-2743.
[37]	Y. Zhang, J. Xu, X. Xu, R. Xi, Y. Liu, X. Fang, X. Wang, Catal. Today, 2019.
[38]	J. S. Tian, H. G. Peng, X. L. Xu, W. M. Liu, Y. H. Ma, X. Wang, X. J. Yang, Catal. Sci. Technol., 2015,5, 2270-2281.
[39]	Y.-C. Xie, Y.-Q. Tang, Adv. Catal., 1990,37, 1-43.
[40]	G. Deo, I. E. Wachs, J. Catal., 1994,146, 323-334.
[41]	B. M. Weckhuysen, I. E. Wachs, R. A. Schoonheydt, Chem. Rev., 1996,96, 3327-3350.
[42]	J. Song, L. Xu, C. Y. Zhou, R. Q. Xing, Q. L. Dai, D. L. Liu, H. W. Song, ACS Appl. Mater. Interfaces, 2013,5, 12928-12934.
[43]	S. Masudy-Panah, R. Siavash Moakhar, C. S. Chua, A. Kushwaha, G. K. Dalapati, ACS Appl. Mater. Interfaces, 2017,9, 27596-27606.
[44]	X. Y. Bi, K. L. Yang, Langmuir, 2007,23, 11067-11073.
[45]	W. Luc, C. Collins, S. W. Wang, H. L. Xin, K. He, Y. J. Kang, F. Jiao, J. Am. Chem, J. Am. Chem. Soc.., 2017,139, 1885-1893.
[46]	S. Yim, T. Kim, B. Yoo, H. Xu, Y. Youn, S. Han, J. K. Jeong, ACS Appl. Mater. Interfaces, 2019,11, 47025-47036.
[47]	W. Grunert, U. Sauerlandt, R. Schlogl, H. G. Karge, J. Phys. Chem., 1993,97, 1413-1419.
[48]	J. Y. Zhang, G. Q. Zhu, S. P. Li, F. Rao, H. Qadeer-Ul, J. Z. Gao, Y. Huang, M. Hojamberdiev, ACS Appl. Mater. Interfaces, 2019,11, 37822-37832.
[49]	J. Liang, Z. Zhang, K. Wu, Y. Shi, W. Pu, M. Yang, Y. Wu, Fuel Process. Technol., 2019,188, 153-163.
[50]	B. P. Mandal, P. S. R. Krishna, A. K. Tyagi, J. Solid State Chem., 2010,183, 41-45.
[51]	M. T. Vandenborre, E. Husson, J. P. Chatry, D. Michel, J. Raman Spectrosc., 1983,14, 63-71.
[52]	L. G. Kong, I. Karatchevtseva, M. G. Blackford, N. Scales, G. Triani, J. Am. Ceram. Soc., 2013,96, 2994-3000.
[53]	L. Debbichi, M. C Marco de Lucas, J. F. Pierson, P. Kruger, J. Phys. Chem. C, 2012,116, 10232-10237.
[54]	V. Kumar, R. Sharma, S. Kumar, M. Kaur, J. D. Sharma, Ceram. Int., 2019,45, 20386-20395.
[55]	A. López Cámara, V. Cortés Corberán, A. Martínez-Arias, L. Barrio, R. Si, J. C. Hanson, J. A. Rodriguez, Catal. Today, 2020,339, 24-31.
[56]	C. Cao, L. Xing, Y. Yang, Y. Tian, T. Ding, J. Zhang, T. Hu, L. Zheng, X. Li, Appl. Catal.B, 2017,218, 32-45.
[57]	P. Yao, J. He, X. Jiang, Y. Jiao, J. Wang, Y. Chen, J. Energy Inst., 2020. 93, 774-783.
[58]	J. Xiong, X. Mei, J. Liu, Y. Wei, Z. Zhao, Z. Xie, J. Li, Appl. Catal. B, 2019,251, 247-260.
[59]	C. G. Liu, Y. H. Li, Y. D. Li, L. Y. Dong, J. Wen, D. Y. Yang, Q. L. Wei, P. Yang, J. Nucl. Mater., 2018,500, 72-80.

Sample	CuO loading ^a (wt%)	Surface area^b (m² g^-1)	Average pore size ^c (nm)	Average pore volume ^c (cm³ g^-1)
La₂Sn₂O₇	—	17.5	10.2	0.057
1% CuO/La₂Sn₂O₇	0.9	16.5	10.4	0.049
2% CuO/La₂Sn₂O₇	1.9	15.9	10.3	0.042
3% CuO/La₂Sn₂O₇	2.9	15.5	10.4	0.039
4% CuO/La₂Sn₂O₇	4.0	15.1	10.6	0.037
5% CuO/La₂Sn₂O₇	4.9	14.9	11.1	0.034
6% CuO/La₂Sn₂O₇	6.0	14.7	11.5	0.031
7% CuO/La₂Sn₂O₇	7.1	10.1	11.4	0.031
8% CuO/La₂Sn₂O₇	8.1	9.6	11.7	0.030
9% CuO/La₂Sn₂O₇	9.1	7.6	12.9	0.030

Sample	CuO loading ^a (wt%)	Surface area^b (m² g^-1)	Average pore size ^c (nm)	Average pore volume ^c (cm³ g^-1)
La₂Sn₂O₇	—	17.5	10.2	0.057
1% CuO/La₂Sn₂O₇	0.9	16.5	10.4	0.049
2% CuO/La₂Sn₂O₇	1.9	15.9	10.3	0.042
3% CuO/La₂Sn₂O₇	2.9	15.5	10.4	0.039
4% CuO/La₂Sn₂O₇	4.0	15.1	10.6	0.037
5% CuO/La₂Sn₂O₇	4.9	14.9	11.1	0.034
6% CuO/La₂Sn₂O₇	6.0	14.7	11.5	0.031
7% CuO/La₂Sn₂O₇	7.1	10.1	11.4	0.031
8% CuO/La₂Sn₂O₇	8.1	9.6	11.7	0.030
9% CuO/La₂Sn₂O₇	9.1	7.6	12.9	0.030

Sample	T_i(°C)	T_p (°C)	T_c (°C)	ΔT_i-p (°C)	S_CO2(%)
Soot	530	640	690	110	68
La₂Sn₂O₇	425	525	600	100	89
1% CuO/La₂Sn₂O₇	420	515	590	95	92
2% CuO/La₂Sn₂O₇	420	500	580	80	93
3% CuO/La₂Sn₂O₇	400	490	565	90	94
4% CuO/La₂Sn₂O₇	395	460	535	65	97
5% CuO/La₂Sn₂O₇	395	470	540	75	96
6% CuO/La₂Sn₂O₇	400	470	545	70	96
7% CuO/La₂Sn₂O₇	400	475	550	75	95
8% CuO/La₂Sn₂O₇	405	475	550	70	95
9% CuO/La₂Sn₂O₇	405	480	555	75	95

Sample	T_i(°C)	T_p (°C)	T_c (°C)	ΔT_i-p (°C)	S_CO2(%)
Soot	530	640	690	110	68
La₂Sn₂O₇	425	525	600	100	89
1% CuO/La₂Sn₂O₇	420	515	590	95	92
2% CuO/La₂Sn₂O₇	420	500	580	80	93
3% CuO/La₂Sn₂O₇	400	490	565	90	94
4% CuO/La₂Sn₂O₇	395	460	535	65	97
5% CuO/La₂Sn₂O₇	395	470	540	75	96
6% CuO/La₂Sn₂O₇	400	470	545	70	96
7% CuO/La₂Sn₂O₇	400	475	550	75	95
8% CuO/La₂Sn₂O₇	405	475	550	70	95
9% CuO/La₂Sn₂O₇	405	480	555	75	95

Samples	O₂-TPD			Soot-TPR
Samples	Oxygen from α peak (μmol g^-1)	Oxygen from β peak (μmol g^-1)	Active oxygen (μmol g^-1)	Oxygen uptake from α peak (a.u.)
La₂Sn₂O₇	3.56	—	3.56	12.3
1% CuO/La₂Sn₂O₇	4.27	11.41	15.68	25.2
3% CuO/La₂Sn₂O₇	4.70	15.51	20.21	38.5
4% CuO/La₂Sn₂O₇	5.70	35.21	40.91	100.0
5% CuO/La₂Sn₂O₇	7.98	29.14	37.12	82.9
7% CuO/La₂Sn₂O₇	5.56	27.47	33.03	78.4
9% CuO/La₂Sn₂O₇	6.13	25.24	31.37	72.4

构建稳定的CuO/La₂Sn₂O₇催化剂用于碳烟颗粒燃烧: CuO在La₂Sn₂O₇烧绿石复合氧化物载体上的单层分散行为

Stable CuO/La₂Sn₂O₇ catalysts for soot combustion: Study on the monolayer dispersion behavior of CuO over a La₂Sn₂O₇ pyrochlore support

RichHTML

PDF

Supporting Information

可视化

摘要/Abstract

引用本文

使用本文

扫码分享

图/表 15

参考文献

相关文章 6

编辑推荐

Metrics

Sample	O 1s binding energy and relative amount (%)			(O₂^- + O₂^2-)/O^2- ratio
Sample	O₂^-	O₂^2-	O^2-	(O₂^- + O₂^2-)/O^2- ratio
1% CuO/La₂Sn₂O₇	532.8/7.6	531.5/43.5	529.8/48.9	1.05
3% CuO/La₂Sn₂O₇	532.9/19.7	531.6/40.4	529.8/39.9	1.50
4% CuO/La₂Sn₂O₇	532.7/16.2	531.5/54.4	529.7/29.4	2.40
5% CuO/La₂Sn₂O₇	532.6/18.6	531.5/49.9	529.9/31.5	2.17
7% CuO/La₂Sn₂O₇	532.8/21.3	531.4/46.2	529.7/32.5	2.08
9% CuO/La₂Sn₂O₇	532.7/13.3	531.4/53.8	529.8/32.9	2.04

[1]	孙晓旭, 朱晓蓉, 王彧, 李亚飞. 1T′-MoTe₂单层: 一种有前景的电催化合成双氧水的催化剂[J]. 催化学报, 2022, 43(6): 1520-1526.
[2]	张临河, 张福东, 薛华庆, 高健峰, 彭涌, 宋卫余, 戈磊. 结合动力学和热力学研究PtPd修饰Zn_0.5Cd_0.5S纳米棒体系的高效光催化产氢机理[J]. 催化学报, 2021, 42(10): 1677-1688.
[3]	郭燕燕, 代成娜, 雷志刚. 2-乙基蒽醌在双金属整体式催化剂上的氢化反应:实验和DFT研究[J]. 催化学报, 2018, 39(6): 1070-1080.
[4]	饶成, 刘瑞, 冯小辉, 沈家庭, 彭洪根, 徐香兰, 方修忠, 刘建军, 王翔. 三维有序大孔SnO₂基固溶体用于有效燃烧碳烟颗粒[J]. 催化学报, 2018, 39(10): 1683-1694.
[5]	韦岳长;刘坚;赵震;姜桂元;段爱军;何洪;王新平. Co0.2/Ce1-xZrxO2催化剂的制备、表征及其催化碳烟燃烧反应性能[J]. 催化学报, 2010, 31(3): 283-288.
[6]	孙淑敏;楚文玲;杨惟慎. 高热稳定性的铈铝复合氧化物用于柴油机尾气中碳烟的消除[J]. 催化学报, 2009, 30(7): 685-689.