摘要
以氰化钠(NaCN)和硫磺为原料合成了硫氰酸钠,通过单因素实验考察了反应温度、催化剂加入量、NaCN浓度、反应时间、nS:nNaCN、催化剂种类对硫氰酸钠收率的影响;在单因素实验结果基础上,利用响应面法对硫氰酸钠合成条件进行了优化。结果表明:单因素实验得到的硫氰酸钠合成的适宜工艺条件为反应温度100℃,保温时间90 min,nS:nNaCN为1.3,NaCN质量分数为30%,催化剂苄基三乙基氯化铵加入量是硫磺的质量的2%,在此条件下得到的硫氰酸钠收率为96.0%;采用响应面法优化后的硫氰酸钠合成最佳工艺条件为反应温度98℃,保温时间101.6 min,nS:nNaCN为1.3,NaCN质量分数为30%,催化剂苄基三乙基氯化铵加入量是硫磺质量的2%,在此条件下得到的硫氰酸钠的收率为96.8%。
Sodium thiocyanate was synthesized from sodium cyanide(NaCN) and sulfur. The effects of reaction temperature, catalyst addition, NaCN concentration, reaction time, nS:nNaCN and catalyst type on the yield of sodium thiocyanate were investigated by single factor experiment.Based on the single factor experiment results, the synthesis conditions of sodium thiocyanate were optimized by response surface method.The results showed that the yield of sodium thiocyanate was 96.0% when the suitable process conditions for the synthesis of sodium thiocyanate were obtained by the single-factor experiment as followed: reaction temperature 100 ℃, heat preservation time 90 min, nS:nNaCN 1.3, 30% NaCN by mass fraction, 2% benzyl triethyl ammonium chloride catalyst based on the mass of sulfur;and the yield of sodium thiocyanate was 96.8% when the synthesis process conditions were optimized by response surface method as followed: reaction temperature 98 ℃, heat preservation time 101.6 min, nS:nNaCN 1.3, 30% NaCN by mass fraction and 2% benzyl triethyl ammonium chloride catalyst based on the mass of sulfur.
作者
梁海
王婉婷
刘海燕
朱宝伟
金炳旭
赵国强
LIANG Hai;WANG Wanting;LIU Haiyan;ZHU Baowei;JIN Bingxu;ZHAO Guoqiang(Research and Development Center of Yingchuang Sanzheng(Yingkou)Fine Chemical Co.,Ltd.,Yingkou 115000;Department of Chemistry and Environmental Engineering,Yingkou Institute of Technology,Yingkou 115014)
出处
《合成纤维工业》
CAS
2019年第5期46-50,共5页
China Synthetic Fiber Industry
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)
营口市博士双创计划项目(011002)
营口理工学院创新团队
关键词
硫氰酸钠
氰化钠
硫磺
合成
工艺
优化
响应面法
sodium thiocyanate
sodium cyanide
sulfur
synthesis
process
optimization
response surface methodology
