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邻二甲苯     
相关语句
  o-xylene
     Ammoxidation of O-Xylene Over V_2O_5,Sb_2O_3,Bi_2O_3,Fe_2O_3,K_2O/Al_2O_3 Catalysts
     在V_2O_5、Sb_2O_3、Bi_2O_3、Fe_2O_3、K_2O/Al_2O_3催化剂上邻二甲苯的氨氧化
短句来源
     Vibrations between Two Molecules in the Complex o- xylene… NH_3(ND_3)*
     复合物邻二甲苯… NH_3(ND_3)分子间的振动
短句来源
     and(4) the fluxes of p-xylene and o-xylene of binary mixtures are respectively 3.58×10-4 and 0.086×10-4mol/(m2·s).
     双组分混合物中对二甲苯和邻二甲苯的通量分别为3.58×10-4和0.086×10-4mol/(m2.s).
短句来源
     ALKYLATION OF o-XYLENE WITH STYRENE ON THE WO_3/ZrO_2 SOLID SUPERACID
     邻二甲苯和苯乙烯在WO_3/ZrO_2固体超强酸的烷基化反应
短句来源
     Studies on the SO_4~2-/ZrO_2 Solid Superacid Catalysts(IV)——Alkylation of O-Xylene With Styrene
     SO_4~2-/ZrO_2固体超强酸催化剂研究(Ⅳ)——邻二甲苯与苯乙烯的烷基化反应
短句来源
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  o xylene
     The effect of addition of rare earth elements(La, Pr, Sm or Nd) on V 2O 5 TiO 2 catalyst for oxidation of o xylene with air to phthalic anhydride(PA) were studied.
     在邻二甲苯气相氧化制苯酐的V2O5TiO2催化剂中,添加少量La、Pr、Sm或Nd后,催化剂活性有不同程度的提高。
短句来源
     The minimum detectable concentration to benzene, toluene, p xylene, o xylene is 0 09,0 12,0 23,0 26μg/m 3 respectively.
     苯、甲苯、对二甲苯、邻二甲苯的最低检出浓度分别为 0 0 9、0 1 2、0 2 3、0 2 6 μg m3。
短句来源
     Studies on “80 g Process” Catalysts for the Oxidation of o Xylene to Phthalic Anhydride
     邻二甲苯氧化制苯酐“80克工艺”催化剂的研究
短句来源
     Liquid Phase Oxidation of o Xylene by Air to o Methyl Benzoic Acid
     邻二甲苯空气液相氧化制取邻甲基苯甲酸
短句来源
     At a space velocity of 3000 h -1 and an o xylene concentration of 80 g/m 3,a conversion of 100%,phthalic anhydride yield of higher than 108% and phenyl phthalein content in crude phthalic anhydride of less than 0.04% have been obtained.
     在空速3000h-1、邻二甲苯的投料质量浓度>80g/m3条件下,邻二甲苯转化率为~100%,粗苯酐质量收率>108%,苯酞质量分数<004%。
短句来源
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  ortho-xylene
     The results showed that recoveries of benzene,toluene,ortho-xylene and para-xylene were 102.9%~103.6%,96.5%~97.2%,93.2%~94.2% and 91.2%~91.6%,respectively.
     实验结果表明:苯、甲苯、邻二甲苯、对二甲苯的回收率分别为102 9%~103 6%、96 5%~97 2%、93 2%~94 2%、91 2%~91 6%;
短句来源
     Analysis of the Factors Affecting Ortho-Xylene's Quality and Yield and Improving Measures
     邻二甲苯质量和产量的影响因素分析及改进措施
短句来源
     The phthalimide has been synthesized from phthalic anhydride and urea in ortho-xylene solvent medium. In the process, ortho-xylene which plays a role as solvent can be used repeatedly. The optimum condition of the proposed method involves:interaction at 144 ℃,for 90 minutes and in the mole ratio phthalic anhydride∶urea∶ortho-xylene=1.0∶0.6∶3.0, the highest yield of phthalimide has achieved 99 %.
     以苯酐和尿素为原料,邻二甲苯为溶剂,通过优化操作,探索出合成邻苯二甲酰亚胺优惠工艺条件:苯酐:尿素:溶剂(摩尔比)=1:0.6:3,反应时间90min,反应温度144℃,产品的收率最高可达到99%(以苯酐计),溶剂可重复使用。
短句来源
     Aimed at ortho-xylene product's poor quality and low yield after capacity expansion of aromatics plant, this paper analyzes the factors affecting ortho-xylene's quality and yield, and offers contermeasures to improve them.
     针对芳烃装置改扩建后邻二甲苯产品存在的质量差、产量低的问题,分析了影响邻二甲苯质量和产量的各种因素,提出了提高邻二甲苯产品质量和产量相应的改进措施。
短句来源
     The degradation situation of benzene,methylbenzene,ortho-xylene,meta-xylene and para-terphenyli is studied in aerobiosis vibration bottle and aerobiosis exposural pool by using EJD-1 and active sluge.
     通过使用EJD— 1和活性污泥 2种菌源 ,在好氧振荡瓶和好氧曝气池中研究苯、甲苯、邻二甲苯、间二甲苯、对二甲苯的降解情况。
短句来源
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  o-dimethylbenzene
     Catalysis tests show that, with the exception of MoO3-ZrO2 system, MoO3-VaO5, MoO3-TiO2, and MoO3-WO3 systems are all catalytically active in the selective oxidation of o - dimethylbenzene to phthalic anhydride;
     催化选择性及转化率测定证明,MoO3-V2O5,MoO3-TiO2及MoO3-WO3体系对于邻二甲苯选择性氧化为苯酐,具有催化活性,但MoO3-ZrO2体系没有催化活性。
短句来源
     Preparation and characterization of heater -type o - dimethylbenzene Sensitive ceramic element with TiO2/MoO3 complex thick film
     旁热式TiO_2/MoO_3复合厚膜邻二甲苯气敏陶瓷元件的制备及特性表征
短句来源
     Study on interfacial structure of binary transition metal oxides(Ⅲ): ——semiconductor gas - sensitivity and catalytic activity in selective oxidation of o- dimethylbenzene to phthalic anhydride
     二元过渡金属氧化物界面结构的研究(Ⅲ):半导体气敏性能及邻二甲苯选择性氧化制苯酐的催化活性
短句来源
     The measurements of gas - sensitivity of these elements are obtained respectively in the six atmosphere, namely o - dimethylbenzene, methyl alcohol, ethanol, H2, CO and O2. The results show these TiO2/MoO3 elements are only senstive to o - dimethyl - benzene, display high selectivity, its response time 1min, the best TiO2/MoO3 furmula is 3.0wt% MoO3, the best VH is 6v(analogous to the element temperature t= 400C.
     以电阻为感量,以氮气为稀释气体,分别在不同浓度的邻二甲苯,甲醇,乙醇,H_2,CO或O_2气气氛中,测试元件的气敏特性,获得了仅对邻二甲苯具有良好灵敏度、选择性和响应时间的气敏元件,为检测和治理工业废气和废水中的邻二甲苯有机污染,提供了可供开发应用的传感元件。
短句来源
     The surface acid property of β zeolite was studied by means of TP. D and IR, and adsorption isotherms of benzene, ethylbenzene, cyclohexane and o- dimethylbenzene were determined by BET method. The alkylation of benzene with ethanol to ethylbenzene was used as a test reaction to investigate the catalytic properties of β zeolite.
     用TPD、IR和BET方法研究了β沸石的表面酸性质和测定了对苯、乙苯、环己烷和邻二甲苯的吸附等温线,并且以苯和乙醇烷基化合成乙苯作为指标反应考察了β沸石的催化性能。
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      o-xylene
    The cultures had been developed for application in minireactors, to degrade volatile organic compounds (VOCs): ethyl benzene, m-xylene, styrene, and o-xylene.
          
    Genes of the ortho pathway (C12O) cloned from associations consuming o-xylene and ethyl benzene were similar to corresponding genes located on the pND6 plasmid of Pseudomonas putida.
          
    Genes of the ortho pathway from associations consuming o-xylene and m-xylene were similar to chromosomal genes of P.
          
    Formation enthalpies of water-o-xylene-triton X-100 microemulsions at 298.15 K
          
    The heat effects of dissolution of water-o-xylene-Triton X-100 microemulsions and their components in 2-propanol at 298.15 K are determined by the thermochemical method.
          
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      ortho-xylene
    The density of binary solutions methanol-para-xylene, methanol-ortho-xylene, and methanol-meta-xylene was measured on an installation for hydrostatic weighing in relation to pressure, temperature, and concentration.
          
    Frozen solutions of 2?wt?% anthracene (solute) in ortho-xylene or in chloroform were used as targets and were irradiated by a frequency-quadrupled Nd:YAG laser (266?nm).
          
    Pseudomonas stutzeri OX1 is able to degrade toluene and ortho-xylene via the direct oxygenation of the aromatic ring.
          
    Determination of rate constants of vibrational relaxation of CO2 following collisions with molecules of ortho-xylene, dimethylan
          
    Diffusion of a para- and ortho-xylene mixture in CIT-1 zeolite: a molecular dynamics study
          
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    1.在以正丙醇及正丁醇为试剂进行对二甲苯及对称三甲苯的烷基化反应中,证明在70—80°及80%硫酸的催化下,伯烷基实际上全部异构化为相应的仲烷基。 2.根据产物中异构体的相对含量,计算在邻二甲苯烷基化时生成1,2,3-异构体与生成1,2,4-异构体两反应活化自由能差(△F(?)—△F(?))。无论所用的试剂为伯醇或仲醇,在75°进行异丙基化时,算得数值为1.2千卡/克分子,仲丁基化时为1.6千卡/克分子;以异丁醇为试剂进行叔丁基化时两反应活化自由能差约为2.9千卡/克分子。 3.文中讨论对二甲苯及对称三甲苯进行叔丁基化时的空间位阻。此外尚列有二甲苯和三甲苯的若干烃基取代物之物理常数。

    Organo-clay containing quaternary ammonium ion with long aliphatic chains shows specificity for the separation of xylene isomers, but ethylbenzene and p-xylene emerge as one peak and o-xylene is eluted before m-xylene. Octadecane has good resolving power for ethylbenzene and p-xylene, but it reverts the elution order of o- and m-xylene and its retarding force for o-xylene is not strong. Dinonyl phthalate has weaker resolving power for ethylbenzene and p-xylene, but stronger affinity for o-xylene. Appropriate...

    Organo-clay containing quaternary ammonium ion with long aliphatic chains shows specificity for the separation of xylene isomers, but ethylbenzene and p-xylene emerge as one peak and o-xylene is eluted before m-xylene. Octadecane has good resolving power for ethylbenzene and p-xylene, but it reverts the elution order of o- and m-xylene and its retarding force for o-xylene is not strong. Dinonyl phthalate has weaker resolving power for ethylbenzene and p-xylene, but stronger affinity for o-xylene. Appropriate combination of the above three components either in a column of serial packing of individual component or in a single column of mixed substrates serves for the complete resolution of the four isomeric C_3 aromatics.

    用一般的色谱固定液不能将八碳芳烃异构体中的间位和对位二甲苯很好地分开。含有长链脂肪族胺的有机粘土可以达到这个目的,但是它却不能分离乙苯和对二甲苯,同时邻二甲苯在间二甲苯之前流出。十八烷可以很好地分离乙苯和对二甲苯,但邻二甲苯在间二甲苯以后流出,而且它对于邻二甲苯的滞留作用不强。邻苯二甲酸二壬酯虽然对于乙苯和对二甲苯分离的作用不大,但对于邻二甲苯有较强的亲和力。因此,将上述三者适当地配合可以将八碳芳烃的四个异构体很好地分开。采用串联柱或混合固定液都可以达到上述目的。

    The dispersing and flowing characteristics of water,alcohol and p-xyl- ene to air systems in stirred tanks of diameters of 30 and 20cm with 6 bladed disk turbine impellers of different sizes have been studied.Gas haldup,critical impeller speed and flooding point of these systems have been throughly examined and correlations applicable to wide ranges of operating variables were developed.The preferable operating condition was also discussed and it was noted that the identity of gas holdup in systems- may be served...

    The dispersing and flowing characteristics of water,alcohol and p-xyl- ene to air systems in stirred tanks of diameters of 30 and 20cm with 6 bladed disk turbine impellers of different sizes have been studied.Gas haldup,critical impeller speed and flooding point of these systems have been throughly examined and correlations applicable to wide ranges of operating variables were developed.The preferable operating condition was also discussed and it was noted that the identity of gas holdup in systems- may be served as the principal criterion of similarity for mass trnsfer in the scale-up of gas-liquid contacters.

    在直径为30和20厘米的搅拌中,用不同大小的六叶园盘透平浆,就水、酒精和邻二甲苯对空气等体系,研究了气液两相的分散与流动特性,对气含率、临界转速和泛点等作了详细的考察,得出了广范围内适用的关联式。对最合宜的操作条件也进行了讨论,並且指出气含率相等可以作为气液反应器放大时传质相似的主要准则。

     
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