- 更多网络例句与吸附相关的网络例句 [注:此内容来源于网络,仅供参考]
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The thermodynamic investigation of adsorptions shows that adsorption of CCTS to Pb~(2+),Cu~(2+),Cd~(2+),Ni~(2+) is spontaneous.Because the values of Gibbs free energy are negative and the calculated entropy values of interactions are positive.However the positive values of the variation in enthalpy show that besides chemisorption, other processes of decalescence, such as physical adsorption and swelling of CCTS were also involved.
CCTS对各重金属离子的吸附热力学分析结果表明:CCTS对各重金属离子吸附熵变△adsS为正值,并且吸附自由能改变量△adsG均为负值,说明CCTS对各重金属离子的吸附是自发进行的,但其吸附焓变△adsH为正值,说明CCTS对重金属离子的吸附不仅仅是化学吸附的过程,还伴随着其他如物理吸附、吸附剂溶胀等吸热过程。
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Adsorption isotherm shows that the adsorption type belongs to theⅠadsorption, and in according with micropore filling theory; Adsorption isobar shows that low temperature favors the adsorption; the water contained in the adsorbents is harmful to the increase of the adsorption capacity.
V/V(吸附甲烷的体积/容器的体积)。甲烷在富纳米孔炭质吸附剂上的等温吸附曲线表明,吸附类型属于Ⅰ类吸附,符合微孔填充理论;等压吸附曲线表明,低温有利于体积吸附量的增加;吸附剂中水分的增加对吸附有不利的影响。
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The adsorption isotherm of neptunium on silica gel correspond to the form of Langmuir isotherm. According to Clausius-Claperon equation,from the slope in InKd vs 1/T plot,adsorption heat could be estimated. From the data of adsorption heat it is concluded that the adsorption of neptunium on silica gel in nitric acid solutions belongs to chemical adsorption and the adsorption process is an endothermic reaction.
三种价态的镎在硅胶上吸附的等温线符合兰格缪尔吸附等温线的形式,是单分子层吸附;根据克劳修斯-克拉柏龙方程,以1nKd对1/T作图,通过直线斜率计算出吸附热,从吸附热的数据可判断三种价态的镎在硅胶上的吸附属于化学吸附,是吸热的过程;对NpOV)、Np和Np(VD在硅胶上的吸附进行了比较,提出了三种价态的锋在硅胶上吸附的机理。
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Theoretical basis of thermodynamics on fluid phase balance is studied in this paper, and estimating rule of thermoelectrical equilibrium with interfacial phenomena is analyzed. Adsorption theoretical model is evaluated on the base of essential theory of adsorption.
本文研究了流体相平衡的热力学理论基础,并分析了存在界面现象时的热力学判据,研究了吸附的基本理论,选择了空穴溶液理论模型计算凝析气在多孔介质表面的吸附;应用晶格理论吸附模型计算凝析油在多孔介质表面的吸附;应用气相吸附数据计算二元液相吸附,作为应用晶格模型研究多元液相吸附的输入数据,并且首次考虑气液混合吸附,以凝析油的临界流动饱和度作为判断气液混合吸附还是单纯的液相吸附的条件。
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The results of the present research are as follows, The correlation between physico-chemical properties of organic compounds and their competitive power was studied, and it was indicated that organic compounds preferable to form H-bonding with organic matter of sorbents have stronger competitive power; Sorption behaviors of ionizable organic compounds in different species and their competitive power were examined, and the results showed that phenols and carbonxylic acids with benzyl circle have much stronger competitive power in molecular species than in ionized species, because negative charges of anionic forms can depressed their adsorption on the surface of the sediment; in contrast, organic bases such as aniline and p-chloroaniline show weaker competitive power in molecular species than in ionized species, and this is because both species of the organic bases could adsorb strongly onto the sediment; there is a correlation between competitive power of organic pollutants in multi-solute systems and their sorption isotherm nonlinearity in single-solute systems, and organic compounds whose sorption isotherms is linear in single-solute systems hardly have competitive power in multi-solute systems; Competitive sorption effects in more than two-solutes systems was studied, and it was exhibited that mixture of two cosolutes each of which could suppress sorption of nominal solute onto the sediment had synergistically competitive sorption effect on the nominal solute; A method about incorporating sorption/desorption of organic pollutants into river water quality model was developed, and discussion about degree of sorption/desorption effect on model prediction for different organic compounds was made, which will provide theoretical basis and practical processes for setting up more accurate water quality model.
论文主要取得了以下研究成果。(1)有机化合物的吸附竞争能力与其物化性质具有相关性,易与沉积物有机质形成氢键的化合物其竞争能力也比较强;(2)可离子化有机化合物的吸附竞争能力与其存在形态有关。酚类、含苯环的羧酸类化合物,其离子态的吸附竞争能力远小于分子态,其机理为有机酸阴离子所带的负电荷抑制了表面吸附能力,主要发生分配作用;而苯胺类化合物,其离子态和分子态都表现出显著的竞争能力,而且离子态的竞争能力略强于分子态,原因在于有机碱阳离子所带的正电荷促进了其表面吸附能力;有机化合物竞争能力的强弱与其单组分吸附等温线的非线性程度具有一定的相关性,吸附等温线近似为线性的化合物没有或只具有微弱的竞争能力;(3)对目标有机化合物的吸附具有竞争效应的有机化合物混合后,将对目标有机化合物的吸附产生协同竞争效应;(4)以京杭运河为例,率先提出了将有机污染物的吸附/脱附作用及水文水力参数耦合到水质模型中的方法,并讨论了吸附/脱附作用对不同有机污染物预测模型的影响,为建立更准确的水质模型及进行更客观的风险和生态评估提供了参考依据。
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The results show that the optimal value of CoCl2 concentration is 0.2 mol/L and the maximum adsorbed amount is 19.674 mg/g onto this adsorbent. The adsorption capacity of phosphine onto CoCl2-modified ACF decreases with the increase of temperatures. The maximum absorbed amounts are 19.674 mg/g at 298 K, 13.537 mg/g at 313 K and 11.087 mg/g at 328 K, respectively. It is found that the Freundlich equation is more suitable for the description of phosphine adsorption process than the Langmuir equation. The isosteric heat of adsorption decreases with the increase of the surface loading on CoCl2-modified ACF, which means that CoCl2-modified ACF adsorbent has an energetically heterogeneous surface. Meanwhile, adsorptive phosphine removal performance may be a dominant of physical adsorption when the heat of adsorption is 16-24 kJ/mol, the CoCl2-modified ACF adsorbent will be one of the candidates for tail gas purification of airtight calcium-carbide furnace and recycle of phosphine.
研究结果表明:浸渍液浓度最佳值为0.2 mol/L,此改性ACF对PH3的饱和吸附量为19.674 mg/g;PH3在CoCl2改性ACF上的吸附量随温度升高而迅速降低,在298,313和328 K时PH3的饱和吸附量分别为19.674,13.537和11.087 mg/g;Freundlich吸附等温方程较好地模拟了PH3在改性ACF上的等温吸附;PH3气体在改性ACF上的等量吸附热随吸附量的增大而减小,表明改性ACF吸附剂表面能量的不均匀性;吸附热在16~24 kJ/mol范围内,过程为物理吸附,有利于密闭电石炉尾气的净化。
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The study showed that the biosorption process could be described well by pseudo-second-order kinetic model and Freundlich isotherm model.Higher cell concentration was favorable to the biosorption.Temperature's effect on the biosorption was not obvious.The oxygenous and nitrogenous functional groups on the cell wall played a very important role in the process of biosorption.Microdeposits were formed by int...
结果表明,菌体对银的吸附量可达91.75 mg/g,吸附过程符合Pseudo-second Order吸附动力学模型,相关系数高达0.999 9;吸附热力学很好地符合Freundlich吸附等温模型,相关系数为0.99;考察菌体浓度和温度对吸附的影响发现,菌体浓度增加有利于对银离子的吸附,温度对吸附影响较小;FTIR、SEM及EDAX实验结果表明吸附存在2种吸附机理,一为菌体表面一些含氮氧的基团对Ag+的络合作用,二为菌体分泌的胞外多糖等物质对Ag+的微沉淀成晶作用。
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Chitosan had been modified by polyacrylate sodium, glularaldehyde, and NaBH4, respectively, which afforded three kinds modified chitosan: polyacrylate sodium modified chitosan (CIS- PA4) chitosan bead and pentamethylene diamido crosslinked chitosan bead (CTSB- G- Hy). The adsorption properties of CTS-CTSB and CTSB-G-Hy were studied by L25(56) orthogonal experimental design. They show high adsorption activities for Pb2+ in solution. The highest removal efficiency of Pb2+ for CTS-PA4, CTSB and CTSB-G-Hy is 94%, 96% and 93%, respectively. The results showed the adsorption property of CTSB is the highest. The CTSB- G- Hy has good mechanical property, acid-resistance and alkali-resistance.
第二部分壳聚糖的改性及其对水溶液中铅离子的吸附性能研究以壳聚糖为原料制备了三种改性吸附剂——聚丙烯酸钠改性壳聚糖(CTS——PA_4)、珠状壳聚糖凝胶树脂和戊二氨交联珠状壳聚糖凝胶树脂,着重考察了CTSB—G—Hy的制备条件,并考察了三种吸附剂吸附6.3mg/L铅离子水溶液中铅的最佳使用条件,结果表明对CTS—PA_4而言当pb~(2+)溶液的pH在4~6.5之间,吸附剂用量为5g/L,吸附时间为1h时pb~(2+)去除率高于94%,CTS—PA_4可在酸性条件下使用,在碱性条件下依然有效但处理效果较差;CTSB对pb~(2+)具有很好的吸附能力吸附剂用量为5g/L,吸附时间为1h时处理效果极佳,pb~(2+)去除率高于96%;CTSB—G—Hy对pb~(2+)具有一定的吸附能力,吸附剂用量为3g/L,吸附时间为1.5h时处理效果最佳,Pb~(2+)去除率高于93%,而且CTSB—G—Hy的机械强度高,耐酸碱性强,可在较宽的pH范围内使用。
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Its high-capacity and strong-acid-resistance were proved. In the acid condition, the adsorption efficiency to acide green 6B and direct fast yellow RL reached above 90%. Through the adsorption rate curve on adsorption behavior of the three dyes, they were all according with pseudo-secondary adsorption rate curve. The rate constant of adsorption increased with increasing temperature. Through the adsorption isotherm of the three dyes, acide green 6B and direct fast yellow RL were according with Langmuir equation, while disperse blue 56 was according with Freundlich equation. The adsorption behavior was an endothermic process. Entropy was increasing during the adsorption. So raising temperature was in favor of adsorption.
结果表明,甲醛环氧氯丙烷交联壳聚糖对染料具有较强的吸附性能和耐酸性能,在酸性条件下,对酸性绿6B和直接耐晒黄RL的吸附效率达90%以上;拟合甲醛环氧氯丙烷交联壳聚糖对三种染料的吸附速率曲线,发现该吸附行为符合拟二级吸附速率曲线,其吸附速率常数随温度的升高而增大;通过测定不同温度下甲醛环氧氯丙烷交联壳聚糖吸附三种染料的吸附等温线表明,甲醛环氧氯丙烷交联壳聚糖对酸性绿6B和直接耐晒黄RL的吸附符合Langmuir方程,而对分散蓝56的吸附符合Freundlich方程,甲醛环氧氯丙烷交联壳聚糖对染料的吸附是一个吸热过程,吸附后体系熵增加,升温有利于吸附。
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Linear CO desorbs earlier and quicker than twin and bridged CO with the progressive heating from 25 to 300°C at 0.1MPa, and the three types of adsorption disappear at 265℃.At 205℃ the adsorption amount of linear CO and bridged CO increases with the pressure from 0.1 to 3.0MPa, but the adsorption amount of bridged CO is more than that of linear CO. At 0.1MPa and 25℃, CO2can decompose into CO and then CO adsorbs quickly, namely, CO2→CO+O, but the wave numbers of the adsorptive CO from decomposed CO2 are different from the pure CO, which demonstrates the effect of on CO adsorption. With the pressure of CO2 from 0.1 to 3.0MPa at 25℃, the total adsorption amount increases and the band at 2052cm^(-1) shifts towards higher frequency.
压力保持0.1MPa,温度由25℃升至300℃时,线式比桥式先脱附,至265℃时,3种吸附基本脱附完全;当温度维持205℃不变而压力逐步由。0.1升至3.0MPa时,线式吸附增量较少,桥式吸附增量较多,CO2在0.1MPa,25℃时就能发生快速的解离吸附,即CO2→CO+O,其吸附行为表现为CO的线式吸附,但吸附峰与纯CO吸附时不同;当温度稳定在25℃而压力逐步升至2.5MPa时,不仅CO2吸附量增大,而且其2052cm^(-1)吸附峰有向高波数移动的趋势。
- 更多网络解释与吸附相关的网络解释 [注:此内容来源于网络,仅供参考]
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absorbent:吸附剂
PSA, Pressure Swing Adsorption)变压吸附技术是一项利用多微孔结晶体对各种气体吸附力不同的特点从空气分离出所需气体的技术. 吸附即是指通过具有分子吸引力的固体物质吸附剂(Absorbent)吸住气体分子.
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adsorbate:吸附质
8.吸附质(adsorbate) 任何被吸附或能被吸附的物质. 9.吸附剂(adsorbent) 任何能将大量其他物质浓集在自己表面上的固体.10.吸附(adsorption) 流动分子靠化学力或物理力,或二者浓集在一个表面的过程.
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adsorbate:吸附物
被吸附的物质称为吸附物(adsorbate),吸附物质的固体或液体为吸附剂(adsorbant). 三废治理、轻工及石油化工工业中常用的吸附剂有活性炭、硅胶、活性氧化铝等. 吸附剂对吸附物有很强的选择性,如镍箔能大量吸附氢,但几乎不吸附氮.
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adsorption:表面吸附
3.2 土壤对有机污染物的吸附机理主要有分配作用(partion)和表面吸附(adsorption),其中土壤有机质对有机污染的吸附是溶解分配作用的结果. 由实验结果可知,阿维菌素在5种供试土壤中的吸附常数Kaf除了与土壤的有机质含量呈显著正相关外,
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adsorption chromatography:吸附色谱法
按色谱法拆散所根据的物理或物理化教性量的不异,又否将其分替: .吸附色谱法( adsorption chromatography ) 应用吸附剂名吸附色谱 吸附色谱害用固定相吸附西口对物资分子吸附才能的差别真隐错混折物的分别,
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adsorption chromatography:吸附色譜
(1)吸附色谱(Adsorption Chromatography)用固体吸附剂作固定相,以不同溶剂作流动相,依据样品中各组分在吸附剂上吸附性能的差别来实现分离. (2)分配色谱(Partition Chromatography)用载体在固相基体上的固定液作固定相,以不同极性溶剂作流动相,
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adsorption potential:吸附势;吸附电位
"adsorption moisture","吸附水分" | "adsorption potential","吸附势;吸附电位" | "adsorption rate; rate of adsorption","吸附速率"
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sorbent:吸附剂
想要有效地把溶质吸附下来,溶质以及吸附剂(sorbent)与水间的作用应该是弱的,而溶质与吸附剂间的相互作用则应该是强的. 除了离子交换吸附剂外,上述原则也就确定了通用性的吸附剂应该是非极性的. 因为要不然的话,
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adsorbent:吸附剂吸附的
adsorbed water 吸附水 | adsorbent 吸附剂,吸附的 | adsorption 吸附(作用)
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adsorptive:吸附的;吸附物
adsorptive separation 吸附分离 | adsorptive 吸附的;吸附物 | adsorptivity 吸附性;吸附度