Asian Journal of Chemistry p. 4988 - 4994 (2014)
Update date:2022-08-16
Topics:
Zhu, Jianjun
Cui, Qiuqing
Peng, Jiangping
Zhang, Li Li
Jiang, Zhongqing
Luo, Lijuan
Tian, Xiaoning
Nano-sized protonic acid catalysts were synthesized and their catalytic properties in the esterification reaction over methanol whith acetic acid were evaluated. The surface chemistry of the synthesized catalysts was investigated using solid-state magic-angle spinning nuclear magnetic resonance, X-ray photoelectron spectroscope and elemental analysis techniques (CHNS-O). The results showed that the appropriate increment of sulfonation temperature can facilitate the attachment of -SO3H groups and also benefit for the enhancement of acetic acid conversion. The initial kinetic study of esterification reaction of methanol and acetic acid, which was catalyzed by synthesized nano-sized protonic acid catalysts, indicates that only one active site was involved in the surface reaction and thus the initial reaction mechanistic paths under our reaction conditions were proposed.
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