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甲苯二胺

甲苯二胺的相关文献在1987年到2023年内共计248篇,主要集中在化学工业、化学、废物处理与综合利用 等领域,其中期刊论文65篇、会议论文4篇、专利文献456954篇;相关期刊44种,包括太原理工大学学报、中华劳动卫生职业病杂志、精细石油化工等; 相关会议4种,包括甘肃省第十三届色谱年会、中国西部地区第四届色谱学术报告会、西北地区第八届色谱学术报告会暨宁夏回族自治区首届色谱年会、中国聚氨酯工业协会第十六次年会暨国际聚氨酯技术研讨会、第11届中国化工学会信息技术应用专业委员会年会等;甲苯二胺的相关文献由408位作者贡献,包括李强、朱忠杰、王晓刚等。

甲苯二胺—发文量

期刊论文>

论文:65 占比:0.01%

会议论文>

论文:4 占比:0.00%

专利文献>

论文:456954 占比:99.98%

总计:457023篇

甲苯二胺—发文趋势图

甲苯二胺

-研究学者

  • 李强
  • 朱忠杰
  • 王晓刚
  • 郑世清
  • 李玉刚
  • 范辉
  • 葛兆伟
  • 卢世博
  • 李应辉
  • 王延吉
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 常亮; 饶艳春; 陈珍珍
    • 摘要: 目的:建立药用复合膜中甲苯二胺的LC-MS/MS测定方法,以考察在不同温度水中的浸出量.方法:采用Agilent Zorbax Eclipse PLUS C18(150×4.6 mm,3.5μm)色谱柱,流动相:甲醇-0.1%甲酸(4:96),柱温:25°C;采用电喷雾(ESI)正离子离子源电离,工作模式为多反应监测模式(MRM).结果:2,6-二氨基甲苯和2,4-二氨基甲苯在范围1~100 ng/mL内呈良好的线性关系,回收率分别为87%~93%,85%~94%;2种成分浸出量均随温度升高而增大.结论:本法可快速准确地检测药用复合膜中的甲苯二胺的浸出量,为药用复合膜的风险监测和相容性研究提供参考依据.
    • 摘要: 组织部门:上海市质量技术监督局抽查范围:上海市生产、销售的60批次产品发布时间:2017年12月抽查概况:对产品的拉断力、拉伸强度、断裂伸长率/断裂标称应变、剥离力、封合强度、抗摆锤冲击能、氧气透过量、水蒸气透过量、感官指标、蒸发残渣、总迁移量、高锰酸钾消耗量、重金属(以PB计)、脱色试验、溶剂残留量及总量、苯类溶剂残留量、甲苯二胺等项目进行了检测。本次抽查,1批次产品不合格主要问题:
    • 闫云; 汪欣萍; 王桂荣; 赵新强; 王延吉
    • 摘要: The synthesis of diphenyl toluene dicarbamate from urea,2,4-toluene diamine and phenol is a complex reaction system.Phenylcarbamate and toluene-2-amino-4-phenylcarbamate,which are the intermediates of the better reaction pathway for the synthesis of diphenyl toluene dicarbamate via urea route,were synthesized from carbonochloridic acid phenyl ester,ammonia water,and toluene diamin,and characterized by means of melting point determination,Fourier transform infrared spectroscopy,element analysis and nuclear magnetic resonance.The high performance liquid chromatography analysis method for the intermediates was established.And the optimal chromatography conditions are:methanol-water (1 ∶ 1 by volumn) as mobile phase,flow rate 0.4 mL/min,and detection wavelength 254 nm.Under these conditions,the calibration curves of phenylcarbamate and toluene-2-amino-4-phenylcarbamate were all linear in certain range with correlation coefficients more than 0.999,the relative standard deviations were all less than 1.0 %.%尿素与2,4-甲苯二胺以及苯酚反应合成甲苯二氨基甲酸苯酯为一复合反应体系.制备了其较好反应路径的中间产物氨基甲酸苯酯及甲苯-2-氨基-4-氨基甲酸苯酯,借助熔点测定、红外表征、元素分析以及核磁共振等手段对中间产物进行了表征;建立了高效液相色谱分析方法,液相色谱分析条件为:流动相甲醇-水(体积比1∶1),流速0.4 mL/min,紫外光检测波长254 nm.在一定的质量浓度范围内,氨基甲酸苯酯及甲苯-2-氨基-4-氨基甲酸苯酯的线性相关系数均大于0.999,相对标准偏差均小于1.0%.
    • 冯建俊; 黎学明; 苏德水; 邵方
    • 摘要: The β-PbO2/α-PbO2/SnO2-Sb2O3/Ti composite electrode(PbO2 composite electrode)was prepared by coating-thermal deposition and electrochemical deposition and characterized by XRD,SEM,cyclic voltammetry(CV), linear sweep voltammetry(LSV)and accelerated life test. The composite electrode was applied to treat the toluene diamine(TDA)wastewater,and the effects of electrolyte concentration and current density on TDA degradation were investigated. The experimental results showed that:The multilayer-structure PbO2 with shuttle-shaped α-PbO2 and cauliflower-shaped β-PbO2 was conducive to improve the stability and activity of composite electrode;The oxygen evolution potential of the composite PbO2 electrode(1.9 V)was obviously higher than that of TDA(1.28 V),and its service life was up to 486 d;The TDA wastewater with 4791.74 mg/L of COD and 486.4 mg/L of TDA mass concentration was treated by electrocatalytic technology,under the conditions of current density 60 mA/cm2,Na2SO4 mass concentration 10 g/L and reaction time 240 min,the removal rate of TDA and COD was 97.3% and 88.1%,respectively.%通过涂覆—热分解法与电沉积法制备了β-PbO2/α-PbO2/SnO2-Sb2O3/Ti复合电极(PbO2复合电极),采用X射线衍射(XRD)、扫描电子显微镜(SEM)、循环伏安法(CV)、线性极化法(LSV)和加速寿命试验对电极进行表征.将PbO2复合电极用于处理甲苯二胺(TDA)废水,考察了电解质浓度、电流密度对TDA降解效果的影响.实验结果表明:α-PbO2呈梭状,β-PbO2呈花菜状,多层结构的PbO2电极利于提高电极的稳定性和活性;PbO2复合电极的析氧电位(1.9 V)明显高于TDA的氧化电位(1.28 V),其使用寿命长达486 d;在电流密度为60 mA/cm2、Na2SO4质量浓度为10 g/L、电解时间为240 min的条件下,对COD为4791.74 mg/L、TDA质量浓度为486.4 mg/L的废水进行处理,TDA去除率高达97.3%,COD去除率可达88.1%.
    • 唐伟枫; 刘敏; 陈滢; 汤伟
    • 摘要: The effects of toluene diamine with different concentration on microbial activity of anaerobic sludge were investigated using relative methane production (RA) and COD removal rate as indicators.The experimental results showed that:When the mass concentration of toluene diamine was 0-150 mg/L,RA was close to 100% or more,and the COD removal rate was 91%-93%,and there was no difference between the control group,which indicated that the anaerobic microorganisms were not inhibited;When the mass concentration of toluene diamine was 200-400 mg/L,RA was 75%-95%,COD removal rate was 2-6 percentage points lower than that of the control group,which indicated that the anaerobic microorganisms were slightly inhibited;When the concentration of toluene diamine was higher than 400 mg/L,RA and COD removal rate were under 70% and 85% respectively,which indicated that the anaerobic microorganisms were moderately inhibited;With the increase of toluene diamine mass concentration,RA and COD removal rate were decreased,while the inhibition effect was increased.Therefore,the mass concentration of toluene diamine should be controlled at 0-150 mg/L to prevent the inhibition effect on microbial activity of anaerobic sludge.%以相对产甲烷活性(RA)和COD去除率为指标,考察不同浓度甲苯二胺对厌氧污泥微生物活性的影响.实验结果表明:甲苯二胺质量浓度为0~150mg/L时,RA接近100%甚至高于100%,COD去除率为91%~93%,与对照组无差别,对厌氧微生物几乎没有抑制作用;当甲苯二胺质量浓度为200~400 mg/L时,RA为75%~95%,COD去除率与对照组相比下降了2~6个百分点,属于轻度抑制;当甲苯二胺质量浓度高于400 mg/L时,RA在70%以下,COD去除率降至85%以下,属于中度抑制;且随着甲苯二胺质量浓度增大,RA减小、COD去除率减小,抑制作用增强.因此,为了防止甲苯二胺对厌氧污泥微生物活性的抑制,甲苯二胺质量浓度应控制在0~150 mg/L.
    • 郝志强; 于智慧; 李忠
    • 摘要: 采用Fe粉置换氯化镍溶液中的Ni2+制备了Ni-Fe催化剂,并应用于催化二硝基甲苯加氢合成甲苯二胺的反应中.运用XRD、低温氮吸附-脱附、H2-TPD 、XPS和TEM等技术手段对不同Ni/Fe物质的量的比(nNiFe)下催化剂进行了表征.结果表明,nNiFe对Ni-Fe催化剂表面性质影响显著.当nNi/Fe为1:4时,Fe抑制Ni氧化的作用达到最大,Ni-Fe催化剂化学氢吸附量和活性物种Ni的分散度分别达到了0.16 mmol·g-1和23%,催化剂性能得到较大的提升.在优化的催化剂制备条件下,DNT(二硝基甲苯)的转化率和TDA(甲苯二胺)的选择性分别达到了~100%和99%.另外,对Ni-Zn漆原镍(Urushibara Ni)催化剂和Ni-Fe催化剂催化DNT加氢反应进程进行了研究,发现它们有相同的加氢中间产物,但反应不同阶段的催化速率存在差异.
    • 崔雪霞; 王桂荣; 赵茜; 李欣; 赵新强; 王延吉
    • 摘要: 尿素、甲苯二胺与苯酚反应合成甲苯二氨基甲酸苯酯为一复合反应体系.对该类反应体系进行分析并提出了本反应的 4 种可能反应路径,采用基团贡献法对 4 种反应路径中各组分的热力学数据以及各反应的焓变、Gibbs自由能变和平衡常数进行了计算,依据热力学计算结果并结合文献实验数据分析反应路径的可行性及难易程度.结果表明,由尿素、甲苯二胺与苯酚合成甲苯二氨基甲酸苯酯的较好反应路径为:尿素首先与苯酚反应合成氨基甲酸苯酯,然后氨基甲酸苯酯与甲苯二胺反应得到终产物甲苯二氨基甲酸苯酯.计算及分析结果可为该反应的实验研究及过程开发提供理论指导.%The synthesis of diphenyl toluene dicarbamate from urea, toluene diamine and phenol is a complex reaction system. On the basis of the analysis for similar reaction system, four possible reaction pathways for synthesizing diphenyl toluene dicarbamate via urea route were proposed. The fundamental thermodynamic data of components in this reaction system were calculated by several methods of group contribution. The reaction enthalpy, Gibbs free energy change and equilibrium constant of all the reactions of the four possible reaction pathways were obtained. According to the results of thermodynamic calculation and experimental data in literature, the feasibility and difficulty of each reaction pathway were discussed. The results show that a better reaction pathway is urea reaction with phenol to give phenyl carbamate and then phenyl carbamate interacting with toluene diamine to form diphenyl toluene dicarbamate. The results from thermodynamic calculation and analysis can provide a theoretical basis for the experimental study and process development of the reaction.
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