Total oxidation of naphthalene with high selectivity using a ceria catalyst prepared by a combustion method employing ethylene glycol.
During the catalytic combustion of naphthalene, compounds other than CO(2) are often obtained. These products, as polymerized polycyclic aromatic hydrocarbons, oxygenated aromatic compounds and benzene derivate compounds, are usually more toxic than naphthalene. At the present work it is shown a nanocrystalline cerium oxide prepared by a combustion method employing a proper ethylene glycol concentration that exhibits very high activity in the decomposition of naphthalene in the presence of air and, most importantly, a selectivity value towards CO(2) of 100% for any range of conversions and/or temperatures used. In addition, it has been demonstrated that the amount of ethylene glycol employed in the synthesis of the catalyst is determinant to achieve the optimal catalytic performance. The catalytic results have been explained in terms of the amount of cerium oxide defects.
Aranda
Asunción
A
Instituto de Carboquímica, C/Miguel Luesma, 50018 Zaragoza, Spain.
López
José M
JM
Murillo
Ramón
R
Mastral
Ana M
AM
Dejoz
Ana
A
Vázquez
Isabel
I
Solsona
Benjamin
B
Taylor
Stuart H
SH
García
Tomás
T
D000388:Air; D000393:Air Pollutants / Q000737:chemistry; D002245:Carbon Dioxide / Q000737:chemistry; D002384:Catalysis; D003460:Crystallization; D019855:Ethylene Glycol / Q000737:chemistry*; D005740:Gases; D008855:Microscopy, Electron, Scanning / Q000379:methods; D053758:Nanoparticles; D009281:Naphthalenes / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D013696:Temperature; D014961:X-Ray Diffraction
D000393:Air Pollutants; D005740:Gases; D009281:Naphthalenes; D002245:Carbon Dioxide; C031721:naphthalene; D019855:Ethylene Glycol; D010100:Oxygen