Zirconium-pillared montmorillonite and their application in supported palladium catalysts for volatile organic compounds purification

• Published in: Materials letters Vol. 62; no. 21; pp. 3646 - 3648
• Main Authors: Chen, Min, Qi, Lingyan, Fan, Liping, Zhou, Renxian, Zheng, Xiaoming
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.08.2008
• Subjects: Rare earth oxides; Volatile organic compounds purification; Zirconium pillared montmorillonite; Zirconium pillared montmorillonite; Rare earth oxides; Volatile organic compounds purification
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/j.matlet.2008.04.017

A novel palladium supported on cerium, lanthanum, praseodymium and zirconium-pillared montmorillonite (MMT) catalysts are prepared and for the catalytic combustion of toluene, acetone and ethyl acetate. The order of catalytic activity is consistent with the different support: La–Zr/MMT ≈ Ce–Zr/MMT > Pr–Zr/MMT. X-ray diffraction (XRD) experiment revealed that the basal spacing of MMT enhanced from 0.97 nm to 1.73 nm after Zr-pillared treatment. After doping of Ce, La and Pr, the interlayer spacing increased to 1.94, 2.02 and 1.85 nm on Ce–Zr/MMT, La–Zr/MMT and Pr–Zr/MMT support. N 2 adsorption–desorption method and scanning electron microscopy (SEM) helped to understand the catalytic performance of these palladium supported and rare earth oxides doped MMT catalysts.