화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.18, No.3, 1128-1135, May, 2012
DOI10.1016/j.jiec.2012.01.017  Export Citation
Preparation of highly dispersed and thermally stable nanosized cerium-hafnium solid solutions over silica surface: Structural and catalytic evaluation
Pankaj Bharali, Gode Thrimurthulu, Lakshmi Katta, and Benjaram M. Reddy†
  • Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology, Uppal Road, Hyderabad 500 607, India
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A highly dispersed and thermally stable nanosized cerium.hafnium solid solution over silica support has been synthesized. The obtained catalyst exhibited a high specific surface area and superior redox as well as acid.base properties. To unveil dispersion and thermal stability, samples were thermally annealed at various temperatures from 773 to 1073 K and investigated by means of XRD, TEM, XPS, ISS, Raman spectroscopy and other techniques. Catalytic activity was evaluated for selective dehydration of 4-methylpentan-2-ol to 4-methylpent-1-ene in the vapor phase. The designed catalyst exhibited better activity and selectivity, and the observed catalytic properties were correlated with structural features.
Keywords:Cerium-hafnium solid solution;Catalyst characterization;Dispersion;Thermal stability;Dehydration;4-Methylpentan-2-ol;4-Methylpent-1-ene
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