Preparation and catalytic performance of N-[(2-Hydroxy-3-trimethylammonium) propyl] chitosan chloride /Na2SiO3 polymer-based catalyst for biodiesel production

Add time:10/01/2019    Source:sciencedirect.com

A novel polymer-based alkaline catalyst was prepared with sodium silicate (Na2SiO3) and N-[(2-Hydroxy-3-trimethylammonium) propyl] chitosan chloride (HTCC), interlinked by epichlorohydrin (ECH), for biodiesel production. The structure and properties of the catalyst were studied by Fourier transform infrared spectroscopy, thermogravimetry-mass spectrometry and transmission electron microscopy. The effects of the variables on the transesterificaton of soybean oil to biodiesel were investigated. It is found that Na2SiO3 was bridged on HTCC chains through ECH and well dispersed in HTCC matrix in nano size. The transesterification conversion reached at 97.0% under the reaction conditions of methanol/oil molar ratio of 6:1, catalyst loading of 4.0 wt.% at 55 °C for 60 min. After the second run, the catalytic activity kept stable, which was contributed to the stability and dispersion of Na2SiO3 in the catalyst.

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