纤维素基磁性聚偕胺肟树脂的研究：—PdCl2在树脂上的吸附动力学

ＰｄＣｌ２在碱式纤维素基磁性聚偕胺肟树脂上的吸附行为与Ｈ２ＰｄＣｌ４不同，主要表现在高的超当量吸附。动力学研究表明，Ｈ２ＰｄＣｌ４在碱中和过程中逐步转变为Ｎａ２ＰｄＣｌ４、ＰｄＣｌ２、和［Ｐｄ（ＯＨ）２Ｃｌ２］２，它们被树脂吸附时首先形成ＡＯ－Ｐｄ２和ＡＯ２－Ｐｄ３络合物，随后被还原为单质钯，汇聚成微粒吸着在树脂表面。     

聚酰胺富集分离-光度法测定环境样品中痕量铊

提出以聚酰胺树脂为吸附剂,在ＨＣｌ介质中,记和动态操作条件下,对环境样品中一铊的选择性吸附分离方法。树对铊（Ⅲ）有很强的吸附能力,饱和吸附容量为８．８６ｍｇ／ｇ（ｐＨ５的ＨＣｌ介质中）和０．９８ｍｇ／ｇ（１．０ｍｏｌ／Ｌ的ＨＣｌ介质中）。     

N503萃淋树脂吸附铁的研究

研究ＴＮ５０３（Ｎ，Ｎ－二仲辛基乙酰胺）萃淋树脂在ＨＣｌ体系中对铁的吸附性能。测定了 ６ｍｏｌ／Ｌ ＨＣｌ中 Ｎ５０３萃淋树脂对铁（Ⅲ）的吸附动力学，实验表明树脂吸附铁（Ⅲ）按准一级反应进行，并符合 Ｆｒｅｕｎｄｌｉｃｈ吸附等温式。根据吸附平衡的研究发现，Ｎ５０３萃淋树脂吸附铁（Ⅲ）的反应按下式进行： ２Ｎ５０３＋Ｈ＋ＦｅＣｌ４＝（Ｎ５０３）２·Ｈ·Ｆｅｃｌ４并用于盐酸中铁的分离测定。     

甲醇燃料车尾气净化催化剂的研究Ⅰ.甲醇深度氧化用钯催化剂上吸附物种的原位红外研究

利用原位红外技术研究了ＣＨ３ＯＨ、ＣＯ、Ｏ２等在Ｐｄ／γＡｌ２Ｏ３上的吸附情况及ＣＨ３ＯＨ和Ｏ２共吸附时表面物种的变化，结果表明：表面纯净的Ｐｄ／γＡｌ２Ｏ３催化剂对甲醇具有很好的解离吸附性能，在无氧条件下，ＣＨ３ＯＨ可在其上脱氢产生ＨＣＨＯ及ＣＯ。Ｐｄ对Ｏ２的吸附力强，氧均以解离方式吸附于Ｐｄ／γＡｌ２Ｏ３上。当吸附的［ＣＨ３Ｏ］与［Ｏ］在Ｐｄ／γＡｌ２Ｏ３上相互作用时，可产生ＨＣＨＯ、ＣＯ、甲二氧基、甲酸根等中间物种     

笼形聚偕胺肟树脂的研究：卤素及其化合物在树脂上的吸附

考查了碱处理笼形聚偕胺肟树脂和乙酸，硝酸或盐酸处理的笼形聚偕胺肟树脂对卤化物，卤酸盐和卤素的吸附行为。发现ＢＣＡＯ和ＨＯＡｃ／ＡＣＡＯ不吸附卤化物和卤酸盐；ＨＮＯ３／ＡＣＡＯ和ＨＣｌ／ＡＣＡＯ对两类化合物表现出不同吸附能力。     

甲醇燃料车尾气净化催化剂的研究：Ⅰ.甲醇深度氧化用钯催化剂上吸附…

利用原位红外技术研究了ＣＨ３ＯＨ，ＣＯ，Ｏ２等在Ｐｄ／γ－Ａｌ２Ｏ３上的吸附情况及ＣＨ３ＯＨ和Ｏ２共吸附时表面物种的变化，结果表明，表面纯净的Ｐｄ／γ－Ａｌ２Ｏ３催化剂对甲醇具有很好的解离吸附性能，在无氧条件下，ＣＨ３ＯＨ可在其上脱氢产生ＨＣＨＯ及ＣＯ。Ｐｄ对Ｏ２的吸附力强，氧均以解离方式吸附于Ｐｄ／γ－Ａｌ２Ｏ３上。当吸附的「ＣＨ３Ｏ」与「Ｏ」的Ｐｄ／γ－Ａｌ２Ｏ３上相互作用时，可产生ＨＣＨＯ，     

弱酸性阳离子交换纤维的制备和应用的研究

本文采用碱性条件下的腈纶水解法，以硫酸肼为交联剂，制备了具有高交换容量和良好物理－机械性能的弱酸性阳离子交换纤维，最高交换容量可达８．４ｍｍｏｌ／ｇ（Ｈ型干纤）。除研究各种因素对纤维性能的影响外，本文还通过实验及仪器分析手段测定了纤维的结构，初步探讨了水解交联的反应机理。将此离子交换纤维用于净化ＨＣｌ和ＮＨ３这两种酸、碱有害气体，实验表明吸附性能优于同类树脂。     

笼形聚偕胺肟树脂的研究HX／ACAO树脂吸附贵金属

氢卤酸、硝酸、硫酸、磷酸和硼酸处理的笼形聚偕胺肟树脂（ＨＸ／Ａ－ＣＡＯ）对Ａｇ＋和等贵金属离子的吸附能力按如下顺序：ＰｄＣｌ４２－：Ｈ３ＢＯ３／ＡＣＡＯ＞ＢＣＡＯ＞Ｈ３ＰＯ４／ＡＣＡＯ＞ＨＩ／ＡＣＡＯ＞Ｈ２ＳＯ４／ＡＣＡＯ＞ＨＣｌ／ＡＣＡＯ＞ＨＮＯ３／ＡＣＡＯ＞ＨＦ／ＡＣＡＯ．ＩｒＣｌ６２－：ＢＣＡＯ＞Ｈ３ＰＯ４／ＡＣＡＯ＞Ｈ３ＢＯ３／ＡＣＡＯ＞ＨＣｌ／ＡＣＡＯ＞ＨＦ／ＡＣＡＯ＞ＨＩ／ＡＣＡＯ＞Ｈ２ＳＯ４／ＡＣＡＯ≥ＨＮＯ３／ＡＣＡＯ．ＰｔＣｌ６２：ＢＣＡＯ＞Ｈ３ＢＯ３／ＡＣＡＯ＞Ｈ２ＳＯ４／ＡＣＡＯ＞ＨＮＯ３／ＡＣＡＯ＞ＨＣｌ／ＡＣＡＯ＞ＨＦ／ＡＣＡＯ＞Ｈ３ＰＯ４／ＡＣＡＯ＞ＨＩ／ＡＣＡＯ．Ａｇ＋：ＢＣＡＯ＞Ｈ３ＢＯ３／ＡＣＡＯ＞ＨＩ／ＡＣＡＯ＞Ｈ２ＳＯ４／ＡＣＡＯ＞ＨＦ／ＡＣＡＯ＞ＨＣｌ／ＡＣＡＯ＞Ｈ３ＰＯ４／ＡＣＡＯ＞ＨＮＯ３／ＡＣＡＯ．ＡｕＣｌ４－：ＢＣＡＯ＞Ｈ３ＢＯ３＞Ｈ３ＰＯ４／ＡＣＡＯ＞ＨＦ／ＡＣＡＯ＞ＨＣｌ／Ａ－ＣＡＯ＞Ｈ２ＳＯ４／ＡＣＡＯ＞ＨＩ／ＡＣＡＯ＞ＨＮＯ３／Ａ－ＣＡＯ．研究了Ｈ３ＢＯ３／ＡＣＡＯ树脂对Ａｇ＋和离子的吸附动力学，讨论了吸附机理．     

双硫腙螯合形成树脂分离富集地质样品中的微量金,铂,钯及其测定

研究了双硫腙螯合形成树脂的合成及其分离富集地质样中Ａｕ，Ｐｔ，Ｐｄ的条件。于ｐＨ１．５的ＨＣｌ介质中，Ａｕ，Ｐｔ，Ｐｄ定量吸附于Ｈ２ＤＺ形成树脂上与大量贱金属分离。用０．６ｍｏｌ／Ｌ的硫脲－０．１ｍｏｌ／ＬＨＣｌ洗脱贵金属，回收率均在９４％－１０６％之间。铁也部分上柱，用磺基水杨酸与酒石酸１：１联合掩蔽除去。     

钠化合物洗提钨及混合洗提中共存反离子的加速效应

研究了在季胺Ⅰ型强碱性阴离子交换树脂上用ＮａＯＨ、ＮａＮＯ３、ＮａＣｌ和ＮＨ４Ｃｌ洗提及洗提后的吸附特性。给出了洗提曲线、穿透曲线和工作交换容量。采用ＮａＣｌ和ＮａＯＨ混合洗提的工艺，获得了钨浓度高而过剩洗提剂含量低的洗出液。为由洗出液蒸发结晶制取高纯Ｎａ２ＷＯ４·２Ｈ２Ｏ开辟了途径。混合洗提的宏观结果表明：由于反离子的存在，Ｃｌ－、ＯＨ－和在溶液相或交换剂中的扩散系数发生改变，→Ｃｌ－及→ＯＨ－的交换速度加快了。     

Treatment of direct blending dye wastewater and recycling of dye sludge

A new sorbent material, barium sulfate-Direct Blending Yellow D-3RNL hybrid (BSD), was synthesized and characterized by various methods. Both the anionic dyes, Reactive Brilliant Red X-3B and Weak Acid Green GS were hardly adsorbed by the BSD material, while the sorption of Ethyl Violet (EV) and Victoria Blue B were extremely obvious. The sorption of cationic dyes obeyed the Langmuir isotherm model, which depended on the electric charge attraction. The saturation amount of EV adsorbed onto the BSD material approached to 39.36 mg/g. The sorption of EV changed little with pH from 3 to 12 while it increased with increasing levels of electrolyte. A dye wastewater sampled from Jinjiang Chemicals was treated, and the color removal rate was more than the COD removal rate. In addition, the cationic dye-BSD sludge was utilized as a colorant fill-in coating. The light stability and thermal stability of the colorant was measured and exhibited good features. This work provided a simple and eco-friendly method for dye wastewater treatment with recycling of waste.     

Interaction between polyethylene films and bromhexine HCl in solid dosage form. V. Effect of packaging materials on the sorption of bromhexine HCl.

A prevention method of the sorption of bromhexine HCl to plastic materials used in packaging was investigated. Four kinds of plastic packaging materials were used: Polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP) and polyacrylonitrile (PAN). Three polyethylenes having different densities were used. No effect of PE density on the sorption of bromhexine HCl from granules was observed. The effects of different kinds of plastics on the sorption of bromhexine HCl from solution and granules were studied. The sorption of bromhexine HCl to PAN, which had a high relative dielectric constant, was the most depressed among the four plastics. The sorption of meclizine HCl to PAN from the solution was also lowest, the same as bromhexine HCl.     

Interaction between polyethylene films and bromhexine HCl in solid dosage form. IV. Prevention of the sorption by addition of magnesium aluminum silicate.

The effects of magnesium aluminum silicate (MAS) addition on the sorption of bromhexine HCl to polyethylene film in tablets were studied. The addition of MAS prevented the sorption of bromhexine HCl to polyethylene film. In order to investigate the mechanism, the interaction between bromhexine HCl and MAS was studied by the powder X-ray diffraction method. It was observed that bromhexine HCl was preferentially adsorbed to the surface of MAS rather than to polyethylene film. The adsorption was accelerated at high temperature and reduced pressure conditions. The sorption of bromhexine base and bromhexine HCl to packaging material were compared using tablet dosage forms. The sorption of bromhexine base to polyethylene film was greater than that of bromhexine HCl.     

Adsorption of copper(II) ions from aqueous solutions on alumina industrial wastes

Equilibrium adsorption of copper(II) ions on red mud (alumina industrial wastes) modified by various methods was studied. The effect exerted by the nature the modifier (NaHSO₄, NaCl + HCl, and H₂SO₄) on the sorption activity of red mud was determined.     

Evaluation of Se(IV) removal from aqueous solution by GMZ Na-bentonite: batch experiment and modeling studies

Bentonite has been studied extensively because of its strong sorption and complexation ability. In this work, the sorption of Se(IV) on purified GMZ bentonite was investigated under ambient temperature as functions of contact time, pH, Se(IV) concentration and co-existing ion Eu(III) using batch techniques. Sorption kinetics of Se(IV) was successfully described by the pseudo-second-order rate equation. The sorption amount of Se(IV) was strongly dependent on the solution pH, and a positive effect was observed on Se(IV) and Eu(III) co-sorption when these two elements existed in the same system under high surface coverage of sorbent. Double layer model was set up and used to quantitatively interpret the sorption experimental data collected in binary and ternary sorption systems. From the experimental results, one can conclude that GMZ bentonite may have good potentialities for immobilizing selenium in nuclear wastes.     

ADSORPTION OF SAMARIUM(Ⅲ) ON DIGLYCOLAMIDIC ACID RESIN

The sorption behavior and mechanism of a novel chelate resin, diglycolamidic acid resin(DAAR), for Sm(Ⅲ) were investigated. The optimal sorption condition of DAAR for Sm(Ⅲ) is pH=6.0 in HAc-NaAc medium. The statically saturated sorption capacity is 190mg/g resin at 298K.The Sm(Ⅲ) adsorbed on DAAR can be ehuted reaching 100% by 0.5～2.0mol/L HCl used as eluant.The resin can be regenerated and reused without apparent decrease of sorption capacity. The apparent sorption rate constant is k29s= 1.96 × 10-5 s-1. The apparent activation energy is 26k J/mol.The sorption behavior of DAAR for Sm(Ⅲ) obeys the Freundlich isotherm. The thermodynamic sorption parameters, enthalpy change △H of DAAR for Sm(Ⅲ) is 16. 9kJ/mol. The molar coordination ratio of the functional group of DAAR to Sm (Ⅲ) is 3. The sorption mechanism of DAAR for Sm(Ⅲ)was examined by using chemical method and IR spectrometry. The coordination bond was formed between oxygen atoms in the functional group of DAAR and Sm(Ⅲ).     

Etude thermodynamique de la decomposition thermique des hydrates du chlorure de magnesium

The thermodynamic study of the different compounds of the system MgCl₂, H₂O, HCl allows to draw the stability diagram of the 8 solid phases into a three-dimensional space (temperature, total pressure and ratio of HCl and H₂O partial pressures). The evolution of the composition of solid and gaseous phases during an isobaric heating is described. The conclusions of this study are in good agreement with the experimental results obtained in laboratory and with the industrial requirements set for the different steps of the dehydration of MgCl₂.     

SORPTION BEHAVIOR AND MECHANISM OF SAMARIUM(III) ON AMINO METHYLENE PHOSPHONIC ACID RESIN

Sm(III) was quantitatively adsorbed by amino methylene phasphonic acid resin (APAR)in the medium of pH=5.0. The statically saturated sorption capacity is 251mg/g @ resin. Sm(III)adsorbed on APAR can be reductively eluted by 2.0mol/L HCl. The sorption rate constant is k2gs=1.35 ×1O-Ss-1. The sorption behavior of APAR for Sm(I) obeys the Freundlich isotherm. The enthalpy change △H° of sorption is 24.9k J/mol. The apparent activation energy is Ea= ll. 7kJ/mol.The sorption mechanism shows that the nitrogen and oxygen atoms of the functional group of APAR coordinated with Sm(Ⅲ) to form coordination bond.     

Sorption of Zn(II) and Cd(II) by chelating resins: Comparison of three resins

Ion-exchange resins, especially chelating resins are used for pre-concentration of metal ions in trace analysis as well as for radiochemical separations following neutron activation of a variety of environmental samples. As part of a systematic study of the sorption characteristics of chelating resins, sorption of Zn(II) and Cd(II) by three chelating resins were studied for various acid conditions in nitrate and chloride media. Both Zn(II) and Cd(II) showed similar behavior. Under higher acid conditions, maximum sorption occurred in 3M HCl solutions. Under low acid conditions, the sorption increased with pH. Chelex 100 gave the highest sorption among the three resins. This revised version was published online in July 2006 with corrections to the Cover Date.     

One-Pot Synthesis of DOX@Covalent Organic Framework with Enhanced Chemotherapeutic Efficacy

Covalent organic frameworks (COFs) have attracted great attention across diverse research fields. However, only a few reports about the biomedical application of COFs are found in the literature. Attributed to the highly porous and tunable structure, as well as good thermal stability, COFs show great potential as drug carriers for chemotherapy. In this work, doxorubicin (DOX) was successfully in situ loaded into a COF by a one-pot method for the first time. The resultant DOX@COF platform exhibited high drug-loading capacity (32.1 wt %) and pH-responsive release property. In vitro and in vivo experiments demonstrated its good biocompatibility and enhanced antitumor efficacy.