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The results indicated that the effect of pH on adsorption of theanine was not obvious within range of 6~11. The adsorption date fit well into the Freundlich and Langmuir isotherm equation within temperature range of 303~323 K and investigative concentration range. The isosteric enthalpy of adsorption, free energy and entropy of adsorption showed that adsorption of theanine was endothermic and spontaneous.

结果表明:在pH6~11时,pH值对717阴离子交换树脂对茶氨酸吸附量影响不大;在温度303~323K和茶氨酸质量浓度范围内,717阴离子交换树脂对茶氨酸吸附行为符合Freundlich和Langmuir吸附等温方程;热力学参数(吸附焓、自由能、吸附熵)表明此吸附过程是吸热和自发的。

Adsorption isotherms were obtained with static adsorption method. Isosteric adsorption enthalpy, adsorption free energy and adsorption entropy were calculated according to the relationship of thermodynamic function. Isosteric adsorption enthalpy was between 29 kJ-mol"1 ~ 34 kJ'mol"1, which reveals that the main molecularly recognition interaction is hydrogen bonding.

通过静态吸附试验,测定了球状分子印迹聚合物对水溶液中茶碱的吸附等温线,利用热力学函数关系计算了球状分子印迹聚合物的等量吸附焓,吸附自由能和吸附熵,等量吸附焓在29.17 kJ·mol~(-1)~34.54 kJ·mol~(-1)之间,推测其分子识别的作用力主要为氢键作用。

Calculated with Clapeyron - Clausious equation, the isosteric heat of adsorption Qst (adsorption heat at certain coverage, which is defined as the numbers of adsorbed melecules per unit cell) and average isosteric heat of adsorption Qst^*(the average adsorption heat with various coverage determined in a certain temperature range) were obtained for the adsorbates investigated.

根据Clapeyron-Clausius方程,处理吸附等温线,得到不同覆盖度C(C=被吸附分子数/晶胞)的等量吸附热Qst(一定覆盖度C时由Clapeyron-Clausius方程计算的吸附热)及平均等量吸附热Qst^*(一定温度区间里等量吸附热Qst的平均值),以及Qst^*与沸点蒸发热△Hv的差值△H1(定义为相互作用强度△H1=Qst^*-△Hv)。

It is shown that the of the porous carbon towards (I_2) depends on the pore volume of the porous carbon; the adsorption of the porous carbon towards phenolic compounds depends on the density of carboxylic and lactonic groups on the surface of the porous carbon; the adsorption of the porous carbon towards Cr d...

发现多孔炭对酚类化合物及Cr的吸附以化学吸附为主,其中对酚类化合物的吸附由羧基与内酯基的表面密度合量决定,对Cr的吸附由表面官能团中羧基和内脂基含量的合量决定;多孔炭对I2的吸附以物理吸附为主,由孔容决定。

An evaluation of Linear, Freundlich and Langmuir equations on both accuratity and stability indicates that the Linear equation is the best. Sorption of p nitrophenol to sediment is dominated by the partition of solutes to sedimental organic matter. The influences of temperature on sorption of p nitrophenol to sediment was also investigated. The sorption parameters of thermodynamics,Δ H =-7 8?kJ·mol -1 , suggest that the sorption behavior is dominated by dispersive force.

研究了对硝基苯酚在不同沉积物上的吸附等温线,比较分析了Linear方程、Freundlich方程和Langmuir方程描述吸附等温线的准确性和稳定性结果表明,Iinear方程更适合描述沉积物吸附对硝基苯酚的等温线对硝基苯酚在沉积物上的吸附主要是溶质在沉积物有机质中的分配,其吸附热为-7 8 kJ·mol-1,主要的吸附作用力为疏水键力。

We also can see that the adsorption of Se on tobacco is polymolecular layer adsorption, Se which has reached the adsorption equilibrium on the tobacco surface is easy to break away adsorption when thin HC1 is existence.

吸附实验还可以看出Se在烟丝上的吸附属多分子层吸附,对已达吸附平衡的烟草用稀HCl作解吸附液时Se较易解吸附

Their corrosion inhibition action of stainless steel in hydrofluoric acid is studied by adsorption theory and electrochemical polarization-curve method,the mechanism of corrosion inhibition action is analyzed.the result shows that the single molecule layer of these compounds is adsorbed on the surface of the stainless steel and followed Langmuir isothermal equation. the adsorption procedure of propiolic alcohol is endothermic reaction, the adsorption ability and corrosion inhibition efficiency increased when temperature rised. The adsorption procedure of other three compounds are all exothermic reaction , the adsorption ability and corrosion inhibition efficiency decreased when temperature increased.

实验结果表明:这几种物质在不锈钢表面产生单分子层吸附,并且满足Langmuir吸附规律,丙炔醇的吸附过程为吸热反应,随着温度的升高,吸附能力增强,缓蚀率升高;其它三种化合物的吸附过程均为放热反应,温度升高,吸附能力下降,缓蚀率降低。

Methane adsorbed on the Mn〓O〓-Na〓WO〓/SiO〓 catalyst can not be found, but it can be adsorbed on outgassed silica at 173K. Such adsorption is formed by interaction of the adsorbed methane with O〓〓 sites and hydroxyls on the surface. The appearance of the band at 2904cm〓 of the V〓 mode (sym. stretch.), which is an infrared forbidden vibration, implies that the Td symmetry of the methane molecule may be distorted somewhat on the surface of silica. The small frequency shift (30cm〓) of OH stretching indicates that only a weak hydrogen-bonding interaction between adsorbed methane and hydroxyls exists in the methane adsorption.

甲烷不能在Mn2O3-Na2WO4/SiO2催化剂上吸附但在l73K的温度条件下可吸附于SiO〓表面上,这种吸附是通过吸附甲烷与表面配位不饱和氧和表面羟基作用而形成的,红外禁阻的V〓振动模式显示出红外活性说明甲烷分子的Td对称性发生畸变,甲烷吸附后羟基位移只有30cm〓,吸附甲烷同表面羟基间的氢键作用很弱。

The optimal pH, which was the major factor influencing the adsorption of cadmium, was around 6.0; and the higher concentration of cations such as K~+, Na~+, Ca~(2+), Mg~(2+), the lower the sorbing capacity of the microalgae; This effect, on the other hand, also illustrated that the ion-exchange was the main adsorption mechanism.

衣藻和固定化衣藻对重金属镉的吸附在pH6.0左右达到最佳吸附,但pH的变化对衣藻吸附镉的影响较大;固定化衣藻则在极低pH值下吸附受到显著影响,在pH3-8的范围内,所受影响不大;背景阳离子的存在对二者吸附的影响非常显著,这从另一方面证明了离子交换为衣藻生物吸附的主要机制。

The new adsorbents for desulfurization of FCC gasoline, such as zeolite adsorbents, metal oxide adsorbents, active carbon, clay adsorbents and other adsorbents, and their mechanism of adsorption, modifications, desulfurized effect, regenerations, were introduced in detail, especially modified adsorbents.

论述了分子筛类吸附剂、金属氧化物类吸附剂、活性炭、黏土类吸附剂和其他一些吸附剂在吸附机理、改性、脱硫效果、再生等方面的研究进展,特别是各类吸附剂改性后对硫化物的脱除效果。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。