铈锆固溶体的表面碱性对催化剂中Pd烧结性能的影响

引用本文: 肖益鸿, 夏笑莹, 阳艳玲, 蔡国辉, 郑勇, 魏可镁. 铈锆固溶体的表面碱性对催化剂中Pd烧结性能的影响[J]. 无机化学学报, 2013, 29(6): 1129-1134. doi: 10.3969/j.issn.1001-4861.2013.00.152 shu

Citation: XIAO Yi-Hong, XIA Xiao-Ying, YANG Yan-Ling, CAI Guo-Hui, ZHENG Yong, WEI Ke-Mei. Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(6): 1129-1134. doi: 10.3969/j.issn.1001-4861.2013.00.152 shu

铈锆固溶体的表面碱性对催化剂中Pd烧结性能的影响

基金项目:
福建省工业科技重大项目(2010H6014) (2010H6014)

福建省教育厅产学研合作课题(JA12023)资助项目。 (JA12023)

摘要: 以尿素为沉淀剂,采用均匀沉淀法制备了Ce_xZr_1-xO₂(0≤x≤1)固溶体,并以其为载体制备了负载型 Pd/Ce_xZr_1-xO₂催化剂。利用XRD、N₂物理吸附、CO脉冲化学吸附、CO₂-TPD、原位漫反射红外光谱(in situ DRIFTS)等技术考察了载体表面碱性强弱对Pd/Ce_xZr_1-xO₂催化剂中Pd烧结行为的影响。结果表明,载体的弱碱性位能有效抑制Pd的烧结,其中Pd/Ce_0.75Zr_0.25O₂催化剂其载体具有更多的弱碱性位,活性组分钯的分散度较高,催化剂的热稳定性较好。

关键词:

Ce_xZr_1-xO₂固溶体;Pd分散度;烧结;碱性

English

Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd

1.
National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou 350002 China
Received Date: 28 December 2012
Fund Project:
福建省工业科技重大项目(2010H6014)

福建省教育厅产学研合作课题(JA12023)资助项目。

Abstract: A series of Ce_xZr_1-xO₂(0≤x≤1) solid solutions were prepared by uniformity precipitation using urea as the precipitant. Supported Pd catalyst was prepared by using the above solid solution as the carrier. The effect of the carriers surface basicity on the sintering behavior of Pd in Pd/Ce_xZr_1-xO₂ catalyst was investigated by XRD, low temperature nitrogen adsorption-desorption, CO pulse chemisorption, CO₂-TPD and in situ Diffuse Reflectance IR Fourier-Transform Spectroscopy(in situ DRIFTS). The results show that the sintering inhibition of palladium relates to the weaker basic site. Owing to its relative larger amount of weak basic site,the prepared Pd/Ce_0.75Zr_0.25O₂ catalyst exhibits higher Pd dispersion and better thermal stability.

Key words:

Ce_xZr_1-xO₂ solid solutions;dispersion of Pd;sintering;basicity

1. [1] Shelef M, Mccabe R W. Catal. Today, 2000,62(1):35-50[1] Shelef M, Mccabe R W. Catal. Today, 2000,62(1):35-50
2. [2] Muraki H, Zhang G. Catal. Today, 2000,63(2/3/4):337-345[2] Muraki H, Zhang G. Catal. Today, 2000,63(2/3/4):337-345
3. [3] SHAO Qian(邵潜), LONG Jun(龙军), HE Zhen-Fu(贺振富), et al. Monolithic Catalysts and Monolithic Reactors(规整结构催化剂及反应器). Beijing: Chemical Industry Press, 2005:70[3] SHAO Qian(邵潜), LONG Jun(龙军), HE Zhen-Fu(贺振富), et al. Monolithic Catalysts and Monolithic Reactors(规整结构催化剂及反应器). Beijing: Chemical Industry Press, 2005:70
4. [4] Engler B, Koberstein E, Schubert P. Appl. Catal., 1989,48 (1):71-92[4] Engler B, Koberstein E, Schubert P. Appl. Catal., 1989,48 (1):71-92
5. [5] Miyoshi N, Matsumoto S, Ozawa M, et al. SAE(Society of Automotive Engineers),1989.DOI: 10.4271/891970[5] Miyoshi N, Matsumoto S, Ozawa M, et al. SAE(Society of Automotive Engineers),1989.DOI: 10.4271/891970
6. [6] Baker R T K, Prestridge E B, Mcvicker G B. J. Catal., 1984, 89(2):422-432[6] Baker R T K, Prestridge E B, Mcvicker G B. J. Catal., 1984, 89(2):422-432
7. [7] Guo Y, Lu G, Zhang Z, et al. Catal. Today, 2007,126:296- 302[7] Guo Y, Lu G, Zhang Z, et al. Catal. Today, 2007,126:296- 302
8. [8] Satsuma A, Sato R, Osaki K, et al. Catal. Today, 2012,185: 61-65[8] Satsuma A, Sato R, Osaki K, et al. Catal. Today, 2012,185: 61-65
9. [9] Hosokawa S, Taniguchi M, Utani K, et al. Appl. Catal. A, 2005,289:115-120[9] Hosokawa S, Taniguchi M, Utani K, et al. Appl. Catal. A, 2005,289:115-120
10. [10] Nagai Y, Hirabayashi T, Dohmae K, et al. J. Catal., 2006, 242:103-109[10] Nagai Y, Hirabayashi T, Dohmae K, et al. J. Catal., 2006, 242:103-109
11. [11] Nagamoto H, Shinoda E, Inoue H. Ind. Eng. Chem. Res., 1993,32:1790-1794[11] Nagamoto H, Shinoda E, Inoue H. Ind. Eng. Chem. Res., 1993,32:1790-1794
12. [12] GU Ying-Ying(古映莹), FENG Sheng-Sheng (冯圣生), LI Jin-Lin(李金林), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2006,22(9):1623-1627[12] GU Ying-Ying(古映莹), FENG Sheng-Sheng (冯圣生), LI Jin-Lin(李金林), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2006,22(9):1623-1627
13. [13] ZHU Chang-Quan(朱昌权), LIANG Hong(梁红), LI Shu- Hua(李树华), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2011,27(6):1093-1100[13] ZHU Chang-Quan(朱昌权), LIANG Hong(梁红), LI Shu- Hua(李树华), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2011,27(6):1093-1100
14. [14] XIAO Yi-Hong(肖益鸿), LI Gui-Ping (李桂平), ZHENG Ying (郑瑛), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2010,26(1):61-66[14] XIAO Yi-Hong(肖益鸿), LI Gui-Ping (李桂平), ZHENG Ying (郑瑛), et al. Chinese J. Inorg. Chem.(Wuji Huaxue Xuebao), 2010,26(1):61-66
15. [15] Lavalley J C. Catal. Today, 1996,27(3-4):377-401[15] Lavalley J C. Catal. Today, 1996,27(3-4):377-401
16. [16] Auroux A, Gervasim A. J. Phys. Chem., 1990,94(16):6371-6379[16] Auroux A, Gervasim A. J. Phys. Chem., 1990,94(16):6371-6379
17. [17] Manchado M C, Guil J M,Mafia A P. Langmuir, 1994,10(3): 685-691[17] Manchado M C, Guil J M,Mafia A P. Langmuir, 1994,10(3): 685-691
18. [18] Pokrovski K, Kyeong T J, Alexis T B. Langmuir, 2001,17: 4297-4303[18] Pokrovski K, Kyeong T J, Alexis T B. Langmuir, 2001,17: 4297-4303
19. [19] Marco D, Claude B, Jean C L. Phys. Chem. Chem. Phys., 1999,1:5717-5724[19] Marco D, Claude B, Jean C L. Phys. Chem. Chem. Phys., 1999,1:5717-5724
20. [20] Atsushi S, Ryota S, Kaoru O, et al. Catal. Today, 2012,185: 61-65[20] Atsushi S, Ryota S, Kaoru O, et al. Catal. Today, 2012,185: 61-65
21. [21] Mun S F, Ahmad Z A, Subhash B. Appl. Catal. B, 2010, 100:365-377[21] Mun S F, Ahmad Z A, Subhash B. Appl. Catal. B, 2010, 100:365-377

扫一扫看文章

计量

PDF下载量: 502
文章访问数: 601
HTML全文浏览量: 66

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

铈锆固溶体的表面碱性对催化剂中Pd烧结性能的影响

English

Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

铈锆固溶体的表面碱性对催化剂中Pd烧结性能的影响

English

Effect of Surface Basicity of Ceria Zirconia Solid Solution on Sintering Character of Pd

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

计量

文章相关

通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs