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kinetics of adsorption
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  吸附动力学
     Kinetics of adsorption of each of disperse dyes,namely,Disperse Yellow Brown S-2RFL(DYB S-2RFL),Disperse Red S-R(DR S-R),Disperse Blue SBL(DB SBL) and Disperse Yellow SE-6GFL(DY SE-6GFL) onto cationic bentonites(EPI-DMA/Bt,PD/Bt,CTMAB/Bt) were studied.
     研究了阳离子膨润土(EPI-DMA/B t,PD/B t,CTMAB/B t)对分散染料(分散黄棕S-2RFL,分散大红S-R,分散蓝SBL,分散黄SE-6GFL)的吸附动力学行为.
短句来源
     KINETICS OF ADSORPTION OF W(Ⅵ) AND Mo(Ⅵ) ON RESIN D290(Ⅲ) ——AFFECT OF FLOWING VELOCITY ON DIFFUSION RATE
     W(Ⅵ)、Mo(Ⅵ)在D290树脂相内的吸附动力学(Ⅲ)——流速对扩散速率的影响
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     Studies on the "cage" polyamidoxime adsorbents─kinetics of adsorption of Pd (Ⅱ) on alkaline resin
     笼形聚偕胺肟树脂的研究──Pd(Ⅱ)在碱式树脂上的吸附动力学
短句来源
     Study on Kinetics of Adsorption of Patulin in Apple Juice
     苹果汁中棒曲霉素的吸附动力学研究
短句来源
     Kinetics of Adsorption of Disperse Dyes at Cationic Bentonites
     阳离子膨润土对分散染料的吸附动力学研究
短句来源
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  吸附的动力学
     Kinetics of Adsorption for Cyclopentane in Silicalite -1
     环戊烷在Silicalite-1分子筛上吸附的动力学研究
短句来源
     KINETICS OF ADSORPTION Pb, Cu AND Cd IN SEAWATER BY DREDGED SEDIMENTS OF YUANDANG LAKE, XIAMEN
     厦门篔筜湖疏浚沉积物对海水中铅铜镉吸附的动力学
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  “kinetics of adsorption”译为未确定词的双语例句
     Moreover,the kinetics of adsorption was investigated,and the results show that the adsorption kinetics of 2,4-dichlorophenol on activated carbon can fit the Lagergren model well,with the first order kinetics rate constant being k_(298)=0.0072 min~(-1),k_(308)=0.011 8 min~(-1),and E_a=38.5 kJ/mol.
     此外,还对吸附过程的动力学进行了研究,结果表明吸附过程遵循Lagergren一级动力学模型,并得出25°C和35°C时速率常数分别为k298=0.007 2 min-1、k308=0.011 8 min-1,吸附活化能Ea=38.5 kJ/mol。
短句来源
     KINETICS OF ADSORPTION AND REACTION OF CARBON MONOXIDE AND OXYGEN ON Pt-ZSM-5 ZEOLITE
     一氧化碳和氧在Pt-ZSM-5分子筛上的动态吸附与反应动力学研究
短句来源
     Kinetics of Adsorption of Platinum with P951 Resin
     P951树脂吸附铂的动力学性质
短句来源
     The kinetics of adsorption and desorption of AuCl_4~- on maororecticular polyacry-late resin(analogous to Amberlite XAD-7)has been studied.
     研究了大孔交联聚甲基丙烯酸酯树脂(相当于 Amberlite-XAD-7)吸附和解吸 AuCl_4~-的动力学.
短句来源
     A Discussion about the Kinetics of Adsorption,Desorption and Exchange Reaction of CO on the Transition Metal Surfaces
     关于CO在过渡金属表面上的吸附、脱附和交换反应动力学的讨论
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  kinetics of adsorption
The kinetics of adsorption was observed to be fast and reached equilibrium within 3 h.
      
A model is proposed for the intradiffusional kinetics of adsorption, taking into account the different mobilities of the molecules adsorbed in micro-, supermicro-, and mesopores and the bonding of such pores in an active carbon particle.
      
Model of intradiffusional kinetics of adsorption on active carbons
      
Adsorptional deformation in the Xe-CaA system has been studied at 303 K; the kinetics of adsorption and deformation has been investigated.
      
1.The kinetics of adsorption of C6H6 and the deformation of a granule of Dezorex active carbon caused by sorption were measured at 301.4 and 305.8 K.
      
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The kinetics of adsorption of water vapor has been studied at 100℃ and 130℃ for Linde 4A, 5A and 13X zeolite pellets. Rates of adsorption were followed gravimetrically in a conventional high vacuum gas adsorption apparatus. The effective diffusion coefficients De of water vapor were found to vary with the amount adsorbed, a. Values of De showed a maximum at a≈2 mM/g for 4A and a≈4 mM/g for 5A. In the range a≥7 mM/g D. increases sharply as a increases for all these three types of zeolites. Activation...

The kinetics of adsorption of water vapor has been studied at 100℃ and 130℃ for Linde 4A, 5A and 13X zeolite pellets. Rates of adsorption were followed gravimetrically in a conventional high vacuum gas adsorption apparatus. The effective diffusion coefficients De of water vapor were found to vary with the amount adsorbed, a. Values of De showed a maximum at a≈2 mM/g for 4A and a≈4 mM/g for 5A. In the range a≥7 mM/g D. increases sharply as a increases for all these three types of zeolites. Activation energies E of diffusion of water vapor in these zeolites decrease from ≥10 kcal/M to 4~5 kcal/M as a increases from 1.5 mM/g to≥6mM/g. From the experimental results, it appeared that: (1) rate of adsorption of water vapor by pellets of zeolites is controlled mainly by the diffusion of water vapor in the crystals of the zeolites; (2) the metallic cations and pore structure of the crystals show greater effect on such diffusion process at low adsorption; and (3) on approaching saturation adsorption the diffusion of water molecules in the zeolite crystals is similar to that in liquid water.

本工作用高真空重量法研究了100℃和130℃下Linde 4A、5A和13X沸石分子筛颗粒上的水蒸气吸附动力学,得到了在三种沸石颗粒中水的有效扩散系数D_e随吸附量α而变化的数据。对于4A,α≈2毫克分子/克处出现D_e极大值;对于5A,α≈4毫克分子/克处出现D_e极大值。当α≥7毫克分子/克时,在三种沸石上均观察到D_e值随α增大而剧烈上升。α从1.5毫克分子/克增加到≥6毫克分子/克,扩散潘化能从≥10千卡/克分子下降至4~5千卡/克分子。根据所得实验结果可以认为:(1)沸石颗粒吸附水蒸气的速率主要取决于水分子在沸石晶粒内的扩散;(2)在较低吸附量时,沸石晶体中的金属阳离子和孔隙结构对水分子的扩散行为起着较大影响;(3)在接近饱和吸附时水分子在沸石晶体中的扩散类似于在液体水中的扩散。

The mechanism of benzene alkylation with ethylene over HZSM-5 catalyst has been studied by means of the transient response method. The reaction was performed in a micro-reactor containing 150 mg catalyst of 24-35 mesh. Ethylene and vaporized benzene were carried by nitrogen flow in 2.5×10-3 mole/min into the reactor at 345℃.The product and residual reactants were delivered continuously with a six-way valve to a chromatographic column at a certain interval,then the amounts of ethylene, benzene and ethylbenzene...

The mechanism of benzene alkylation with ethylene over HZSM-5 catalyst has been studied by means of the transient response method. The reaction was performed in a micro-reactor containing 150 mg catalyst of 24-35 mesh. Ethylene and vaporized benzene were carried by nitrogen flow in 2.5×10-3 mole/min into the reactor at 345℃.The product and residual reactants were delivered continuously with a six-way valve to a chromatographic column at a certain interval,then the amounts of ethylene, benzene and ethylbenzene changed with the time and their transient responses could be determined.If qfne X and qdec.X represent respectively the adsorbed and desorbed amounts of X which reaches the new steady state, their values may be calculated in digit by means of Simpson's equation, the calculated results are as follows: qin. Et = 1.16× 10-3 mole/g-catalyst,qcec Et = 0.63× 10~3 mole/g-catalyst and qin.B = 0.86×10-4 mole/g-catalyst.It takes 4.15 min for ethylene to attain a new steady state, the amount of ethylbenzene produced in this time is 6.48×10-4 mole/g-catalyst, which is about eight times as large as the adsorbed amount of benzene. For this reaction, the transient response curves obtained are as follows: an obvious transient response curve for ethylene (Fig. 1), nearly instant response for benzene (Fig. 2) and instant response for ethylbenzene (Fig. 3). This means that the benzene is less strongly adsorbed on HZSM-5 than ethylene and the surface reaction is the rate determining step. This result is in accordance with the model previously reported.The kinetics of adsorption of ethylene on HZSM-5 catalyst conforms to Elovich's equation. The activation energy of adsorption on bare surface is 1.184 kcal/mole as shown in Fig. 7, and Elovich parameters are listed in Table 1.

用过渡应答法研究了乙烯、苯在HZSM—5分子筛催化剂上烷基化反应机理。实验表明,在345℃时,乙烯吸附于催化剂上,苯在催化剂上为弱吸附。乙苯生成后立即从表面脱附,任何中间物都无动力学意义的吸附,都不构成控制步骤。这一结果解释了前述动力学方程。 在反应与接近反应温度下,主要吸附物乙烯在催化剂表面的吸附速度可以用耶洛维奇方程描述,并求得了有关的耶洛维奇参量。

The kinetics of adsorption and reaction of carbon monoxide and oxy-

以脉冲热动力学方法(PTK)研究了500℃左右时CO 和O_2在Pt-ZSM-5上的动态吸附和反应。发现O_2呈强吸附,CO 呈较弱吸附。经推导,得出CO 在Pt-ZSM-5上氧化反应的近似动力学方程式为γ=kp_(CO)p_(O_2)~(?)。用此方程处理300—642℃范围内CO氧化动力学数据,得到了不同温度下的反应速度常数和低于500℃的反应活化能,E_(<500℃)=6.8kcal/mol。高于500℃时,阿累尼乌斯图上直线出现转折,表明反应机理改变。

 
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