Title :
Preparation of K2O/ZrO2 catalyst and its Use in the synthesis of Di-2-ethylhexyl carbonate
Author :
Yu Su ; Peng Wang ; Jinsheng Gao
Author_Institution :
Sch. of Municipal & Environ. Eng., Harbin Inst. of Technol., Harbin, China
Abstract :
K2O/ZrO2 K2O/ZrO2-La2O3-x (x=0.4%, 0.5%, 0.6%, 0.7% and 0.8%) catalysts for the synthesis of di-2 ethylhexyl carbonate from dimethyl carbonate and 2-ethyl hexanol were prepared by impregnation method calcinated at 773K, 873K and 973K. The activity of K2O/ZrO2-La2O3-0.6% catalyst reached the yield of 81.18% for di-2-ethylhexyl carbonate when the calcination temperature was 973K. XRD and Raman measurements of catalysts revealed that the tetragonal and monoclinic zirconia phase were observed in the catalysts. It was benefited to increase the basicity of catalysts that K2O dispersed on the surface of the carrier. The monoclinic zirconia phase decreased when the content of La increased.
Keywords :
Raman spectra; X-ray diffraction; calcination; catalysis; catalysts; lanthanum compounds; organic compounds; pH; potassium compounds; zirconium compounds; 2-ethyl hexanol; K2O-ZrO2; K2O-ZrO2-La2O3; La content; Raman measurement; XRD measurement; calcination temperature; carrier surface; catalyst activity; catalyst basicity; di-2-ethylhexyl carbonate; dimethyl carbonate; impregnation method; monoclinic zirconia phase; temperature 773 K; temperature 873 K; temperature 973 K; tetragonal zirconia phase; Chemistry; Educational institutions; Mesoporous materials; Petrochemicals; Production; Solids; X-ray scattering; activity; catalysts; di-2-ethylhexyl carbonate;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988581
