SYNTHESIS AND CHARACTERIZATION OF MODIFIED MESOPOROUS SILICA-IMOBILIZED Cu(II)-ACETONITRILE COMPLEX AND ITS APPLICATION IN TRANSESTERIFICATION OF FRYING OIL

Syukri ,Rycce Sylviana Pratikha,Novesar Jamarun

doi:10.25077/jrk.v7i2.184

Abstract

ABSTRACTMesoporous silica has attracted rapidly growing attention in catalysis. In this work, mesoporoussilica was synthesized by using CTAB surfactant and then modified by AlCl3. Such materialwas used as support for Cu(II)--acetonitile complex and applied in transesterification of fryingoil. The XRD pattern of the obtained silica confirms the availability of chracteristic peak onsilica surface while its TEM exhibits the uniformity of nanochannel of the mesoporous silica.The particle size of silica support has become smaller after grafting process showed by SEMimages. FT-IR spectra of the materials indicated that the Cu(II) grafted on the mesoporoussilica was in the form of its acetonitrile complex. Supprisingly, the Cu loading the graftedcatalyst was found to be very high. That was 21%, when the catalyst applied ontransesterification of the examined frying oil the amount of total methyl ester yielded were of65%.Keywords: mesoporous silica, AlCl3, Cu(II)-acetonitrile complex, transesterification

Highlights

Ordered mesoporous silica in 1992 attracts rapidly growing attention in its application
The important limitation of mesoporous silica is the lack of active site in it framework
Copper contain in grafted catalyst was analysed by AAS and methyl ester formation as a product of reaction was followed by GC-MS

Summary

INTRODUCTION

Ordered mesoporous silica in 1992 attracts rapidly growing attention in its application. MCM-41 as one member of M41s family from Mobile Corporation has been synthesized using CTAB as structure directing agent and confirm the uniform pore size (2-50 nm), tunable pore size, large surface area, high pore volume, and high thermal stability[1]. Their advantages have great interesting and promising field and potential to apply in catalysis, support[2], and adsorbent[3]. Mesoporous silica as supported material was modified by AlCl3 and was immobilized by complex of Cu(II)-acetonitrile. Copper contain in grafted catalyst was analysed by AAS and methyl ester formation as a product of reaction was followed by GC-MS

Procedure

RESULTS AND DISCUSSION

CONCLUSION