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One‐Step Preparation of Efficient and Reusable SO 4 2− /ZrO 2 ‐Based Hybrid Solid Catalysts Functionalized by Alkyl‐Bridged Organosilica Moieties for Biodiesel Production
Author(s) -
Li Wei,
Ma Fengyan,
Su Fang,
Ma Ling,
Zhang Shengqu,
Guo Yihang
Publication year - 2011
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100022
Subject(s) - catalysis , alkyl , cubic zirconia , transesterification , mesoporous material , materials science , biodiesel , methanol , organic chemistry , biodiesel production , chemical engineering , hybrid material , chemistry , ceramic , engineering
A series of mesoporous sulfated zirconia materials functionalized by alkyl‐bridged organosilica moieties (SO 4 2− /ZrO 2 SiO 2 (R) with various S/Si or Zr/Si molar ratios and R=CH 2 CH 2 or C 6 H 4 ) were developed by a one‐step co‐condensation technique combined with hydrothermal treatment with the aid of a triblock copolymer surfactant (P123). The structures, morphologies, porosities, and acid properties of the materials were well characterized. Subsequently, the catalytic performances (activity and stability) of SO 4 2− /ZrO 2 SiO 2 (R) were evaluated by the transesterification of both pure triglyceride (tripalmitin) and low‐cost virgin plant oil ( Eruca sativa Gars. oil) with methanol for biodiesel production under mild conditions (atmospheric pressure, 65 °C), and the enhanced catalytic activity with respect to alkyl‐free sulfated zirconia was obtained. This excellent catalytic activity was explained in terms of the inherent Brønsted acidity, well‐defined mesoporosity, and increased hydrophobicity of the as‐prepared, hybrid, solid acid catalyst.