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6610219 
Journal Article 
Study on Alkylation of Phenol with Styrene over SO42-/ZrO2 Catalyst 
Hyunjun, Y; Lee, YH; Seokhwan, S; Chung, M; Jang, MK; Hun, JS; Ahn, HG; 곽원봉 
2015 
16 
6 
541-548 
KJD:ART002060331 
Surfactants are an important raw material of the developing solution for liquid crystal display panel. Styrenated phenol in styrenated phenol alkolxylate is a hydrophobic group. Homogeneous catalyst is used in the current SPs synthesis. But this SP contained unreacted phenol. The phenol can adversely affect the human body. In this study, we were synthesized styrenated phenols (SPs) involving high content of di-styrenated phenol (DSP) which can be used to prepare styrenated phenol alkoxylate. And this styrenated phenol contained very small contents of unreacted phenol. The solid catalyst was prepared by impregnation method. SO42- on SO42-/ZrO2 catalyst was introduced from an aqueous 1M-H2SO4 solution. The contents of sulfate groups of the prepared catalyst were 5-15wt% to ZrO2. The prepared catalyst was dried at 110℃ for 12hr, and was calcined for 2hr at 600℃ under air atmosphere. The catalysts were characterized by BET surface area, X-ray diffraction patterns, and FT-IR spectra. The catalytic activity was examined by measuring the conversion of phenol and styrene in a batch liquid-phase reactor. The concentration of phenol, styrene and styrenated phenols was measured by GC with capillary column. Almost 100% conversion of both phenol and styrene over SO42-/ZrO2 catalyst with sulfate contents of 15wt% were obtained at 15wt% of amount of catalyst to the reactants at reaction temperature of 100℃. Reaction time was 6hr. At same reaction conditions, selectivity of MSP, DSP, and TSP were 23.6%, 52.1%, and 5.4%, respectively. It was known that selectivity to DSP was increased as FT-IR absorption peak of 1236 ㎝-1 which corresponds to O-S-O bonds was increased.