摘要
以氰化钠和硫磺为起始原料,在相转移催化剂作用下,合成了硫氰酸钠。探索了反应物配比和温度对产品质量及收率的影响。提出了硫氰酸钠合成过程中三废的回用。优化工艺条件为:物料比n(硫磺)∶n (氰化钠)=1.25∶1.00,反应温度为95℃,催化剂选用苄基三乙基氯化铵,催化剂添加量为0.4%,反应时间90 min,收率为97%左右。进一步进行废渣废液套用实验研究,实现了废渣废液的资源化,为工业化提供了实验依据。
Sodium thiocyanate was synthesized from the reaction of sodium cyanide with sulfur under the action of phase transfer catalyst.The effects of reactant ratio,temperature,product quality and yield were investigated.Proposed the retrieval and utilization of wastes produced in this synthesis process of sodium thiocyanate.The experimental results from single factor experiments showed that the optimum process conditions were as followingr:material ratio of n(sulfur)to n(sodium cyanide)was of 1.25∶1.00;the reaction temperature was of 95℃;benzyl triethyl ammonium chloride was selected as catalyst with a content of 0.4%;the reaction time was of 90 min;the yield was up to 97%.Solid and liquid wastes were fully realized the utilization.This report provides an experiment basis for industrialization.
作者
梁海
李春宇
赵志刚
LIANG Hai;LI Chun-yu;ZHAO Zhi-gang(Ynnovate Sanzheng(Yingkou)Fine Chemicals Co.,Ltd.,Liaoning 115003,China)
出处
《精细化工中间体》
CAS
2019年第3期60-62,68,共4页
Fine Chemical Intermediates
基金
辽宁省重点研发计划(2018230009)
辽宁省工程技术研究中心项目(201802380)
