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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
Source PublicationCATALYSIS LETTERS
Volume147Issue:11Pages:2893-2900
AbstractA 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.
SubtypeArticle
KeywordCo Oxidation Gold Nano Particles Mixed Metal Oxide Catalyst Au/ce1-xzrxo2
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s10562-017-2182-6
WOS KeywordCEO2-ZRO2 MIXED OXIDES ; GAS SHIFT REACTION ; CARBON-MONOXIDE ; TEMPERATURE OXIDATION ; AU NANOPARTICLES ; GOLD CATALYSTS ; MG-AL ; CERIA ; SUPPORT ; CU
Indexed BySCI
Language英语
WOS Research AreaChemistry
Funding OrganizationInternational Scientific Partnership Programme through ISPP of King Saud University, Riyadh, Saudi Arabia(0057) ; King Saud University ; CSIR-NEERI
WOS SubjectChemistry, Physical
WOS IDWOS:000412660200021
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qibebt.ac.cn/handle/337004/9746
Collection膜分离与催化团队
Affiliation1.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
Recommended Citation
GB/T 7714
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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