邻二甲苯

由于对二甲苯的扩散能垒远小于间二甲苯和邻二甲苯，因此MEL分子筛也表现出对于对二甲苯的较好选择性。

Because the energy barrier of p-xylene was much lower than that of m-xylene and o-xylene in MEL , MEL zeolite showed efficient shape-selectivity for p-xylene .

对邻二甲苯催化氧化反应，以热点温度作为控制参数，进行Bang-Bang控制，使反应器在振荡状态下操作，与定态操作相比，苯酐收率提高3%。

In o-xylene catalytic oxidation the phthalic anhydride yield with Bang-Bang control may be higher than that in the steady state operation by about 3 % ( mol / mol ) .

对PEN最新生产技术及由邻二甲苯和丁二烯为原料合成PEN的技术经济性作了综述。

The latest advances of PEN from o - xylene and 1,3 - butadiene were reviewed .

探讨了以刚玉球为载体，V2O5-TiO2为活性组份的邻二甲苯氧化制苯酐催化剂活性下降原因。

The cause for reduction in activity of the catalyst with V_2O_5-TiO_2 as the active component for oxidation of o-xylene to phthalic anhydride was investigated .

邻二甲苯氧化制苯酐催化剂的研究&Ⅰ.V2O5TiO2的组成、物性和反应性能

Study of v_2o_5 tio_2 catalysts for selective oxidation of o-xylene to phthalic anhydride ⅰ . correlations between composition , physical characteristics and catalytic properties

旁热式TiO2/MoO3复合厚膜邻二甲苯气敏陶瓷元件的制备及特性表征

Preparation and characterization of heater - type o - dimethylbenzene Sensitive ceramic element with TiO2 / MoO3 complex thick film

试验为kg级工业模拟中试试验，反应为间歇式反应，原料邻二甲苯一次投料量为4.2kg，目的产物为邻甲基苯甲酸，单程收率可达47%，总收率可达62.36%。

The reaction was intermittent . The yield per pass of o methyl benzoic acid is up to 47 % with a total yield of up to 62 36 % .

微波加热法向沸石分子筛中引入金属离子&La~（3＋）与NaX、NaY、NaL、NaM沸石离子交换微波催化氧化邻二甲苯制苯酐

Cation-Exchange of Zeolites Using Microwave Radiation Catalytic Oxidation of o-Xylene to Phthalic Anhydride under Microwave Radiation

以Hβ沸石为催化剂进行了邻二甲苯&叔丁醇烷基化反应的研究，结果表明：Hβ沸石作为邻二甲苯烷基化反应的催化剂活性很高，叔丁醇可100%转化。

The experiment results show that H 3 zeolites has high catalysis efficiency for the alkylation of o-xylene with tert-butyl alcohol . In this reaction , the conversion of tert-butyl alcohol has been as high as 100 % .

采用基团贡献法计算得邻二甲苯+苯乙烯二元体汽液相平衡数据，并进而确定了该体系的Wilson方程模型参数。

UNIFAC equation is used to calculate the VLE data of o-xylene + styrene system , and the parameters of Wilson equation are also estimated for this system .

生物滤池内产生CO2的浓度与邻二甲苯的降解有密切关联，通过在线监测进出气中的CO2浓度变化，可以间接反映出生物滤池的运行状况和生物生长量。

The elimination of o-xylene could be estimated by the CO_2 concentration in the outlet gas of the bioreactor . It was a strong correlation between the CO_2 production and inlet o-xylene concentration .

针对邻二甲苯的特点，开发成功选择性高、寿命长、氨与邻二甲苯的物质的量之比（A2）较小的新型V-Cr-Mo-O/SiO2催化剂。

A V-Cr-Mo-O / SiO 2 catalyst , which is characterized by high selectivity , long service life and small molar ratio of ammonia to o-xylene has been screened .

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。研究表明，不同的pH，溶质的流出次序发生改变。

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 . It has been found that the elution order of solutes varies with the pH value of mobile phase .

在改性Y沸石上邻二甲苯异构化和歧化反应同时进行，SY沸石的歧化反应变化规律与环己烯氢转移反应相似。

O-xylene isomerization is accompanied by disproportionation reaction on modified Y zeolites . For SY zeolites the results of the o-xylene disproportionation reaction are consistent with that of the cyclohexene hydrogen transfer reaction .

采用吸附实验、静态实验与动态实验验证了稀土离子改性对光催化剂的BTEX（苯、甲苯、乙苯、邻二甲苯）的吸附性能、一级反应动力学、动态去除效率的影响。

The absorption capacity , the first-order reaction kinetic and the removal efficiency of VOCs including benzene , toluene , ethyl-benzene and O-xylene ( BTEX ) were tested in a 200L-static reactor and 57L continuous reactor respectively .

结果表明，HY型分子筛载氟量适当可以显著提高其酸性，改善其热稳定性、孔结构和晶体结构，提高其在邻二甲苯催化转化中的催化活性。

The results showed that the fluo-rine with proper amount for HY zeolite modification could increase its acidity and thermal stability , as well as improve the pore structure and crystal structure . The modified HY zeolite also presented higher catalytic activity for o-xylene conversion .

针对邻二甲苯氨氧化容易生成邻苯二甲酰亚胺的特点，筛选了选择性较高的ODT-88催化剂。

The selectivity of phthalonitrile is a key problem for the ammoxidation of o-xylene . Based on appraising tests , a catalyst ODT-88 of higher selectivity has been found .

用CAHN2000型电子天平在温度303.15～443.15K、压力3.47～2116.6Pa条件下测定对二甲苯、间二甲苯、邻二甲苯及甲苯在KY型沸石上的吸附平衡数据。

The adsorption equilibria of p-xylene , m-xylene , o-xylene and toluene on KY zeolite were measured under temperature range ( 303.15 ~ 443.15K ) and low pressure ( 3.47 ~ 2116.6 Pa ) by CAHN 2000 Electrobalance .

在120℃、烷基苯配比为6、催化剂用量6%及反应时间2小时的条件下，由苯乙烯与混合二甲苯和邻二甲苯合成PXE的收率分别达76%和83%。

The yield of PXE was respectively 76 % or 83 % depending on the alkylbenzene used being xylol or o-xylene . The ratio of the alkylbenzene to styrene was 6 , the catalyst concentration was 6 % and the reaction time at 120 ℃ was 2 hours .

利用甲苯、间二甲苯，邻二甲苯化合物的物理性质差异，以HP-1毛细管柱上的分离过程为探讨对象，对上述化合物的分离行为进行比较。

Employing the difference of physical property of toluene , m - xylene , o - xylene , taking HP - 1 separation process on capillary column as investigation aim , the article made a comparison between the separation behaviour of the above compounds .

邻二甲苯氧化工艺的参数灵敏性和操作域

The Parameters ' Sensitivity and Performance Range of O-xylene Oxidation Process

提高邻二甲苯氧化工艺进料浓度的有效措施

Effective Ways to Increase the Inlet Concentration of O-xylene Oxidation Process

直接蒸馏重整汽油获取邻二甲苯和重芳烃原料

To produce O-dimethylbenzene and heavy aromatics by directly distilling reforming gasoline

邻二甲苯侧链的氯化及水解合成邻苯二甲醇

Synthesis of o-xylenediol by side chain chlorination of o-xylene and hydrolysis

联产邻二甲苯以提高对二甲苯装置经济效益

Co-production of o-xylene for enhancing the economic benefit of p-xylene unit

邻二甲苯氧化生产邻苯二甲酸酐固定床反应器设计

Design of fixed bed reactor for O-xylene oxygenated to phthalic anhydride

邻二甲苯的生产和市场增产邻二甲苯的措施

PRODUCTION AND MARKET OF THE ORTHO-XYLENE Measures for Increasing o-Xylene Output

邻二甲苯液相氧化动力学的研究

A Study on Kinetics of o-Xylene Oxidation in Liquid Phase

微波催化氧化邻二甲苯制苯酐

Catalytic Oxidation of o-Xylene to Phthalic Anhydride under Microwave Radiation

苯酐装置尾气中邻二甲苯的色谱分析

Gas Chromatographic Analysis of O-Xylene in Tailor Gas from Phthalic Anhydride Unit