TY - JOUR
T1 - Catalytic performance of acidic ionic liquid-functionalized silica in biodiesel production
AU - Zhen, Bin
AU - Jiao, Qingze
AU - Wu, Qin
AU - Li, Hansheng
PY - 2014/1
Y1 - 2014/1
N2 - Acidic ionic liquid ([BsAIm][OTf]) was immobilized on sulfhydryl-group- modified SiO2 (MPS-SiO2) via free radical addition reaction. The [BsAIm][OTf] loading on acidic ionic liquid-functionalized silica ([BsAIm][OTf]/SiO2) was controlled through tuning the sulfydryl (SH) content of MPS-SiO2. All the samples were characterized by FT-IR, elemental analysis, N2 adsorption-desorption measurements and TG-DTA. The catalytic performance of [BsAIm][OTf]/SiO2 in the esterification of oleic acid and the transesterification of glycerol trioleate for biodiesel production was investigated. The results showed that with the increase of [BsAIm][OTf] loading on SiO2 the specific surface area and pore volume of [BsAIm][OTf]/SiO2 decreased, and the pore diameter of [BsAIm][OTf]/SiO2 narrowed. In the esterificaiton of oleic acid, the oleic acid conversion increased with the increasing [BsAIm][OTf] loading. In the transesterification of glycerol trioleate, with the increasing [BsAIm][OTf] loading the glycerol trioleate conversion decreased and the selectivities to glycerol monooleate and methyl oleate increased.
AB - Acidic ionic liquid ([BsAIm][OTf]) was immobilized on sulfhydryl-group- modified SiO2 (MPS-SiO2) via free radical addition reaction. The [BsAIm][OTf] loading on acidic ionic liquid-functionalized silica ([BsAIm][OTf]/SiO2) was controlled through tuning the sulfydryl (SH) content of MPS-SiO2. All the samples were characterized by FT-IR, elemental analysis, N2 adsorption-desorption measurements and TG-DTA. The catalytic performance of [BsAIm][OTf]/SiO2 in the esterification of oleic acid and the transesterification of glycerol trioleate for biodiesel production was investigated. The results showed that with the increase of [BsAIm][OTf] loading on SiO2 the specific surface area and pore volume of [BsAIm][OTf]/SiO2 decreased, and the pore diameter of [BsAIm][OTf]/SiO2 narrowed. In the esterificaiton of oleic acid, the oleic acid conversion increased with the increasing [BsAIm][OTf] loading. In the transesterification of glycerol trioleate, with the increasing [BsAIm][OTf] loading the glycerol trioleate conversion decreased and the selectivities to glycerol monooleate and methyl oleate increased.
KW - supported ionic liquid catalysts esterification transesterification biodiesel
UR - http://www.scopus.com/inward/record.url?scp=84893216768&partnerID=8YFLogxK
U2 - 10.1016/S2095-4956(14)60122-4
DO - 10.1016/S2095-4956(14)60122-4
M3 - Article
AN - SCOPUS:84893216768
SN - 2095-4956
VL - 23
SP - 97
EP - 104
JO - Journal of Energy Chemistry
JF - Journal of Energy Chemistry
IS - 1
ER -