title: Biodiesel production from rubber seed oil using poly (sodium acrylate) supporting NaOH as a water-resistant catalyst.
abstract: Poly (sodium acrylate) supporting NaOH (NaOH/NaPAA) was prepared by in situ polymerization of aqueous solution of acrylic acid with an over-neutralization by adding excess of NaOH. NaOH/NaPAA presented a promising selectivity for water absorbency and good water retention with negligible swelling capacity in the organic solvents of methanol, glycerol, rubber seed oil methyl esters, and rubber seed oil. NaOH/NaPAA catalysts showed a basic strength of 15.0<H_<18.4 and their basicity increased with the increase of the NaOH loading amount. NaOH/NaPAA catalysts exhibited almost the same catalytic activity in the transesterification of rubber seed oil with methanol under the optimized reaction conditions compared to conventional homogeneous NaOH catalyst. Furthermore, the functional absorbent/catalyst system presented a good water resistance in the transesterification which retained high catalytic activity when a water concentration in the reaction system was less than 2 wt.%.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, PR China. yangru@bbn.cn
authors.forename: Ru
authors.initials: R
authors.lastname: Yang
authors.forename: Mengxing
authors.initials: M
authors.lastname: Su
authors.forename: Jianchun
authors.initials: J
authors.lastname: Zhang
authors.forename: Fuqiang
authors.initials: F
authors.lastname: Jin
authors.forename: Chunhong
authors.initials: C
authors.lastname: Zha
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.forename: Xinmin
authors.initials: X
authors.lastname: Hao
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D002384:Catalysis; D005224:Fats, Unsaturated / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D012972:Sodium Hydroxide / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D000180:Acrylic Resins; D056804:Biofuels; D005224:Fats, Unsaturated; C027814:rubber seed oil; D014867:Water; C006903:carbopol 940; D012972:Sodium Hydroxide