CAJ | 학술논문

以酸值为指标设计正交试验表,探讨了催化剂钛酸四丁酯加入时间对偏苯三酸三辛酯合成的影响。结果表明,钛酸四丁酯加入时间以开始最好,反应体系温度达120℃时次之,温度达180℃15 min时最差。分析表明,从酸醇酯反应本体游离出的自由水存在是有效催化成分丧失的主要原因,此部分的水解失效在催化剂加入时即发生。
이산치위지표설계정교시험표,탐토료최화제태산사정지가입시간대편분삼산삼신지합성적영향。결과표명,태산사정지가입시간이개시최호,반응체계온도체120℃시차지,온도체180℃15 min시최차。분석표명,종산순지반응본체유리출적자유수존재시유효최화성분상실적주요원인,차부분적수해실효재최화제가입시즉발생。
Using acid value as an indicator,the impact of catalyst tetrabutyl titanate added time on the synthesis of trioctyl trimellitate was studied.The orthogonal experimental results showed that the best added time was at the start of the reaction,the system reaction temperature 120 ℃ was less,and 180 ℃ after 15 min was the worst.These results demonstrated that the presence of free water,which dissociated from the reaction system,was the main reason for the loss of effective catalytic activity,and the loss occurred as soon as the catalyst added.