Catalytic combustion of toluene over platinum supported on Ce–Zr–O solid solution modified by Y and Mn

• Published in: Journal of hazardous materials Vol. 149; no. 3; pp. 742 - 746
• Main Authors: Zhi Min, Liu, Jian Li, Wang, Jun Bo, Zhong, Yao Qiang, Chen, Sheng Hui, Yan, Mao Chu, Gong
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 19.11.2007; Elsevier
• Subjects: Applied sciences; Catalysis; Catalytic combustion; Catalytic reactions; Ce 0.50Zr 0.50O 2; Cesium - chemistry; Chemical engineering; Chemistry; Chemistry, Physical - methods; Doping; Equipment Design; Exact sciences and technology; Gas hourly space velocity; Gases; General and physical chemistry; Incineration; Manganese - chemistry; Metals; Oxygen - chemistry; Platinum - chemistry; Pollution; Reactors; Temperature; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Toluene; Toluene - chemistry; X-Ray Diffraction; Yttrium - chemistry; Zirconium - chemistry; Ce 0.50Zr 0.50O 2; Catalytic combustion; Gas hourly space velocity; Toluene; Doping; Monolithic construction; Solid solution; X ray diffraction; Ce0.50Zr0.50O2 Catalytic combustion; Programmed temperature; Storage; Aromatic compound; Reactor; Catalyst activity; Catalyst; Coprecipitation
• ISSN: 0304-3894; 1873-3336
• DOI: 10.1016/j.jhazmat.2007.08.032

A series of CeO 2–ZrO 2 mixed oxides were prepared using coprecipitation method and characterized by BET, oxygen storage capacity (OSC), X-ray diffraction (XRD) and H 2-temperature-programmed reduction (H 2-TPR). The catalytic activities toward toluene combustion were investigated in a micro-reactor. The results demonstrate that the catalytic activity of Pt/γ-Al 2O 3/Ce 0.50Zr 0.50O 2 monolithic catalyst can be greatly improved by doping metal into Ce 0.50Zr 0.50O 2. When doping Y and Mn into Ce 0.50Zr 0.50O 2 simultaneously, the catalyst Pt/γ-Al 2O 3/Ce 0.40Zr 0.40Y 0.10Mn 0.10O X shows the highest activity. The T 10 (the temperature of 10% toluene conversion) and the complete conversion temperature (the temperature of 90% toluene conversion) of toluene are 443 and 489 K, respectively. Gas hourly space velocity (GHSV) results show that the prepared catalyst can be applied in a wide range of GHSV (from 12,000 to 20,000 h −1). The catalyst prepared shows great potential for practical application.