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Effect of SO2 on Catalytic CO Oxidation Over Nano-Structured, Mesoporous Au/Ce1-xZrxO2 Catalysts
Valechha, Dolly1; Megarajan, Suresh Kumar2; Fakeeha, Anis Hamza3; AL-Fatesh, Ahmed S.3; Labhasetwar, Nitin K.1
2017-11-01
发表期刊CATALYSIS LETTERS
卷号147期号:11页码:2893-2900
摘要A series of nano-structured, mesoporous Au/Ce1 - xZrxO2 type catalysts were synthesized by first synthesizing Ce1-xZrxO2 type of support with different degree of Zr substitutions and following sol-gel route. One weight percent of Au was incorporated on these supports using deposition-precipitation method. These synthesized catalysts were characterized in detail by various techniques, and evaluated for their CO oxidation activity. Effect of SO2 poisoning on catalytic CO oxidation activity was also investigated in detail. It was observed that the catalytic activity for CO oxidation reaction depends on the Ce/Zr molar ratio. The effect of SO2 on CO oxidation was less prominent for the Zr incorporated 'Au/Ce0.8Zr0.2O2 (ACZ0.2)' as compared to bare 'Au/CeO2 (AC)' catalyst. In case of ACZ0.2, the activity remains quite stable even after 5 h of SO2 exposure, however, after 12 and 18 h, the activity decreases to 62 and 55%, respectively. Whereas AC catalyst shows rapid decline in catalytic activity from the first hour of SO2 exposure, and continue to decline significantly to 35 and 18% after 12 and 18 h of SO2 exposure, respectively. Multiple regeneration studies of both bare and Zr incorporated catalysts show pronounced improvement/regain in catalytic activity.
文章类型Article
关键词Co Oxidation Gold Nano Particles Mixed Metal Oxide Catalyst Au/ce1-xzrxo2
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s10562-017-2182-6
关键词[WOS]CEO2-ZRO2 MIXED OXIDES ; GAS SHIFT REACTION ; CARBON-MONOXIDE ; TEMPERATURE OXIDATION ; AU NANOPARTICLES ; GOLD CATALYSTS ; MG-AL ; CERIA ; SUPPORT ; CU
收录类别SCI
语种英语
WOS研究方向Chemistry
项目资助者International Scientific Partnership Programme through ISPP of King Saud University, Riyadh, Saudi Arabia(0057) ; King Saud University ; CSIR-NEERI
WOS类目Chemistry, Physical
WOS记录号WOS:000412660200021
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/9746
专题膜分离与催化团队
作者单位1.CSIR NEERI, Energy & Resource Management Div, Nehru Marg, Nagpur 440020, Maharashtra, India
2.Chinese Acad Sci, Key Lab Biobased Mat, Qingdao Inst Bioenergy & Bioproc Technol, 189 Songling Rd, Qingdao 266101, Peoples R China
3.King Saud Univ, Chem Engn Dept, Coll Engn, POB 800, Riyadh 11421, Saudi Arabia
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Valechha, Dolly,Megarajan, Suresh Kumar,Fakeeha, Anis Hamza,et al. Effect of SO2 on Catalytic CO Oxidation Over Nano-Structured, Mesoporous Au/Ce1-xZrxO2 Catalysts[J]. CATALYSIS LETTERS,2017,147(11):2893-2900.
APA Valechha, Dolly,Megarajan, Suresh Kumar,Fakeeha, Anis Hamza,AL-Fatesh, Ahmed S.,&Labhasetwar, Nitin K..(2017).Effect of SO2 on Catalytic CO Oxidation Over Nano-Structured, Mesoporous Au/Ce1-xZrxO2 Catalysts.CATALYSIS LETTERS,147(11),2893-2900.
MLA Valechha, Dolly,et al."Effect of SO2 on Catalytic CO Oxidation Over Nano-Structured, Mesoporous Au/Ce1-xZrxO2 Catalysts".CATALYSIS LETTERS 147.11(2017):2893-2900.
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