Direct Synthesis of Mesoporous Sulfated Silica-Zirconia Catalysts with High Catalytic Activity for Biodiesel via Esterification | Zendy

Xiaorong Chen | Zendy; YiHsu Ju | Zendy; ChungYuan Mou | Zendy

Open Access

Direct Synthesis of Mesoporous Sulfated Silica-Zirconia Catalysts with High Catalytic Activity for Biodiesel via Esterification

Author(s) -

Xiaorong Chen,

YiHsu Ju,

ChungYuan Mou

Publication year - 2007

Publication title -

the journal of physical chemistry c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.401

H-Index - 289

eISSN - 1932-7455

pISSN - 1932-7447

DOI - 10.1021/jp0749221

Subject(s) - cubic zirconia , catalysis , mesoporous material , materials science , chemical engineering , mesoporous silica , zirconium , superacid , diffuse reflectance infrared fourier transform , lauric acid , adsorption , inorganic chemistry , nuclear chemistry , chemistry , organic chemistry , photocatalysis , composite material , fatty acid , ceramic , engineering

A solid acid material of high loading of sulfated zirconia on mesoporous silica SBA-15 has been successfully synthesized by a direct-synthesis under strong acidic condition. The materials were characterized by powder X-ray diffraction, N2 adsorption−desorption, UV−visible diffuse reflectance spectroscopy, transmission electron microscopy (TEM), ICP-mass, and NH3 temperature-programmed-desorption (TPD). The zirconia content and well-ordered mesostructure of SiO2−SZ are controllable by tuning the molar ratios of sulfate to zirconia and silica to zirconia. UV−visible spectra and TEM observations confirm the incorporation of zirconium (IV) onto the mesoporoes framework. Acidity is enhanced in comparison with unsupported sulfated zirconia. Much improved catalytic performance under mild temperature condition in the esterification of lauric acid and palmitic acid with the direct-synthesis SiO2−SZ catalyst was observed as compared to un-supported SZ. The good catalytic performance of the sulfated silica-zirconia ...

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