["재료 반응",,"벤젠산을 탈수화하여 벤젠산산에 넣고,少量浓硫酸少量投入。升温至沸点回流。开始缓慢滴加甲醇除去反应介质里的水。约6-7小时后。脱水结束。取样中控。转化率大于97合格。下一步减洗，转化率大于99，物料含量小于0.1合格。蒸去甲苯。加入甲醇降温至有白色晶体析出，离心出白色晶体。包装。사람 선생님 반응 과정과 역할을 설명해 주실 수 있을까요? 고등학교 문화만 있어요. 더 많이 배워보고 싶어요.","이는 중학교에서 교육되는 아세트산과 알코올을 이용한 에스터화 반응입니다。-COOH+CH3-OH=-酯-OCH3+H水。","그것은 그렇게 쉽지 않습니다。苯并甲酰苯甲酸在浓硫酸中加热会发生分子内脱水关环，生成蒽醌。","음；最后蒽醌的含量很低，不会超过0.5","그럼；最后蒽醌的含量很低，不会超过0.5"","그럼；最后蒽醌的含量很低，不会超过0.5"

2017-10-29View Original

Thread Content

将邻苯甲酰苯甲酸投入甲苯溶剂里，再投入少量浓硫酸。升温到105以上至回流。开始缓慢滴加甲醇脱掉反应介质里的水。约12小时后。脱水结束。取样中控。转化率大于97合格。下一步减洗，转化率大于99，物料含量小于0.2合格。蒸去甲苯。加入甲醇降温至有白色晶体析出，离心出白色晶体。包装。请师傅给讲一下反应的过程。和作用。只有高中文化。想多学点。谢谢！

Reply #22017-10-29

这也是中学的酸加醇生成酯的反应。 -COOH+CH3-OH=-CO-OCH3+H2O。

Reply #32017-11-06

没那么简单，邻苯甲酰苯甲酸在浓硫酸中加热会分子内脱水关环，生成蒽醌。

Reply #42017-11-07

嗯，我们最后蒽醌的含量很低，不会超过0.5

Reply #52017-11-07

嗯，我们最后蒽醌的含量很低，不会超过0.5

Reply #62017-11-07

嗯，我们最后蒽醌的含量很低，不会超过0.5

Submit a Project

**Looking for Chemical Technology, Equipment & Solutions?** No Registration Required Broader Platform Exposure | Global Chemical Service Provider Connections

Submit Request — Free Consultation

Disclaimer

This is an automated machine translation of the original thread. Some technical terms may have inaccuracies; the original text shall prevail. Click "View Original" at the top right to access the source page, which supports IP-based automatic real-time language translation. Please watch out for contact details and sales inducements to prevent fraud. All content and translations are for reference only, representing solely the poster's personal views. For enquiries, email service@hcbbs.com.

Thread Content

Submit a Project

Disclaimer

Quick Links