title: Microcapsule with a heterogeneous catalyst for the methanolysis of rapeseed oil.
abstract: This study has demonstrated that microcapsules can be used as a microreactor for the transesterification of rapeseed oil with calcium oxide (CaO) base catalyst. CaO-loaded microcapsules were prepared by coextrusion technique, and the transesterification reaction was carried out by adding methanol into the prepared microcapsules and oil in a batch-type reactor. Results showed that the microcapsules system could promote the transesterification and hinder the dissolution of the catalyst, in contrast to a biodiesel production with CaO particles. The optimal conditions for methanol to oil molar ratio, catalyst content in the microcapsules and reaction temperature were found to be 8:1, 20 wt.%, and 65 °C, respectively. The results of reusability tests showed that CaO-loaded microcapsules could be successfully reused for three times without loss of the catalytic activity. It was concluded from these results that microcapsules have the potential to improve the performance of solid base catalyst for biodiesel production.
authors.affiliation: Center for Optical Research & Education, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan. fkurayama@cc.utsunomiya-u.ac.jp
authors.forename: Fumio
authors.initials: F
authors.lastname: Kurayama
authors.forename: Tomomi
authors.initials: T
authors.lastname: Yoshikawa
authors.forename: Takeshi
authors.initials: T
authors.lastname: Furusawa
authors.forename: Newaz Mohammed
authors.initials: NM
authors.lastname: Bahadur
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Handa
authors.forename: Masahide
authors.initials: M
authors.lastname: Sato
authors.forename: Noboru
authors.initials: N
authors.lastname: Suzuki
mesh_terms: D017610:Calcium Compounds / Q000494:pharmacology; D002214:Capsules / Q000737:chemistry*; D002384:Catalysis / Q000187:drug effects; D004951:Esterification / Q000187:drug effects; D004952:Esters / Q000378:metabolism; D005229:Fatty Acids, Monounsaturated; D008697:Methane / Q000378:metabolism*; D000432:Methanol / Q000378:metabolism; D010087:Oxides / Q000494:pharmacology; D010938:Plant Oils / Q000378:metabolism*; D000074262:Rapeseed Oil; D059027:Recycling; D013696:Temperature
chemical_list: D017610:Calcium Compounds; D002214:Capsules; D004952:Esters; D005229:Fatty Acids, Monounsaturated; D010087:Oxides; D010938:Plant Oils; D000074262:Rapeseed Oil; C016538:lime; D008697:Methane; D000432:Methanol