关键词: 6,6'-二羟基-3,3,3',3'-四甲基-1,1'-螺二氢茚, 双酚A, 固定床连续催化

Abstract: In this paper，a new preparation method of a continuous fixed-bed catalytic system for 6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane was reported with bisphenol A crystalline residue solution as raw material，and sulfonated polyvinyl generation of styrene - divinylbenzene strong acid cation exchange resin as catalyst. Stainless steel reactor with ?30 mm was filled by 50 mL (22g， E = 1.8 mmol H+/mL) dry resin. In the condition of T =150 ℃，WHVS = 0.48h－1，it had reacted continuously for 1000 h，the concentration of 6,6 '-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane in reaction solution was stabilized at 43.5%，and the exchange capacity of catalyst remained 3.8 mmol/g. Product was purified by recrystallization，and the melting point was 215—217 ℃，purity was≥ 99.98% (HPLC). By HPLC，IR，NMR and other methods for the analysis of product content and structure，reaction conditions were optimized with a statistical software STATISTIC. The results for the improvement on the production process of bisphenol A residue treatment suggest a brand new method for bisphenol monomer production.

Key words: 6,6'-dihydroxy-3,3,3'-,3'-tetramethyl-1,1'--spirobiindane, bisphenol A, a continuous fixed- bed catalytic system