Advanced Materials Research Vol. 681

Abstract: Corrosion inhibition performances of polyaspartic acid(PASP) and Sulfuric acid high cerium to copper in Citric Acid solution was studied using electrochemical method. The results showed that PASP and Sulfuric acid high cerium mainifested very good synergy effect. When the total concentration was 0.1g/L, the inhibition efficiency reach 80.8% on the basis of 1:1.

Abstract: This paper shows how calcium lignosulphonate（CSL）water reducer affects the adsorption and rheological properties of alkali-activated slag cement (AASC) pastes activated by NaOH. It was concluded that the adsorption of water reducer on AASC pastes depended directly on the dosage of the water reducer and the retarder. Slag particles grounded with the retarder YP-3 adsorbed one and a half times of water reducer CSL as much as pure slag particles at 1% mass of the slag, and the absolute value increment of the zeta potential of the AASC suspension containing the retarder YP-3 is 14.00mV, compared with 9.25mV in the system without YP-3. Besides, the AASC pastes activated by NaOH containing the retarder YP-3 show better rheological properties and lower fluidity loss over time.

Abstract: The effect of atmospheric pressure dielectric barrier discharge plasma treatment on desizing polyvinyl alcohol (PVA) on polyester fabric was discussed as compared desizing with alkali through a combination of desizing rate, field scanning electron microscopy and strength test. The dyeing properties of polyester fabrics treated with atmospheric plasma have also been studied. The results show that plasma treatment can improve desizing rate, surface color depth and dye-uptake for polyester fabric.

Abstract: The replaceable Linear polyacrylamide(LPA) gel was used as the sieving medium; An extensive series of experiments has been performed using DNA fragments ranging in size from 80 to 587 base pairs with laser induced fluorescence detection(LIFD). The electric field was changed from 100V/cm to 375V/cm. The mobilities with LPA in different electric field strength were studied. Although the LPA sieving matrix is commonly used in biological chemistry, these mobilities have not previously been reported. It was different from with the cross-link polyacrylamide and agar gels. The new modification of Ogston model was initiated. This work complements our systematic study on electrophoretic mobilities under different conditions, and will help to further optimize and improve high performance DNA separation in microfluidic applications.

Abstract: A series of MgAlFe-CO3 layered double hydroxides (LDHs) were successfully prepared by co-precipitation method. With synthetic wastewater, the effect of doped iron on fluoride sorption by calcined MgAlFe-CO3 layered double hydroxides (CLDH) under different pH and contact time conditions was investigated. The sorption isotherm data were fitted well to Langmuir isotherm at 25 °C. The maximum sorption capacity of fluoride on CLDH increases first and then decreases with the increase of Fe/Al molar ratio and attains maximum of 71.94 mg/g when Fe/Al molar ratio is 1:2, although doped iron is unfavorable to the regeneration of original layered structure for CLDH after fluoride adsorption. No aluminium in the solution after fluoride adsorption was detected when Fe/Al molar ratio is equal to or larger than 1:2. The results indicate that CLDH with proper Fe/Al molar ratio is a promising candidate as an adsorbent material for fluoride removal from aqueous solutions.

Abstract: Co-sorption characteristics of Zn(II) and As(V) on the mixed Fe/Al-PILCs was investigated in a batch system at room temperature. The effects of relevant parameters, such as pH value of solution, adsorbent dosage, initial Zn(II) and As(V) concentrations and contact time were examined, respectively. The results show that co-sorption capacities and co-sorption rates of Zn(II) and As(V) by Fe/Al-PILC are higher and faster than those of single Zn(II) or single As(V) by Fe/Al-PILC. Co-sorption isotherm data of Zn(II) and As(V) by Fe-Al-PILC were fitted well to Langmuir isotherm and the maximum sorption capacities of Zn(II) and As(V) on mixed Fe-Al-PILCs (Q0) are 16.98 mg/g and 16.29 mg/g, respectively, which are higher than those in single system. n>1 from Freundlich isotherm indicate that the sorption of Zn(II) and As(V) by Fe-Al-PILC is favorable. E values from D-R model indicate that the type of sorption of Zn(II) and As(V) by Fe-Al-PILC is physical. The results indicate that there is significant potential for Fe/Al-PILCs as an adsorbent material for Zn(II) and As(V) removal from aqueous solutions.

Abstract: Two kinds of novel materials, Mg-1.6mol%Ni-0.4mol%NiO-2mol%MF (MF=NbF5, CrF3), along with Mg-1.6mol%Ni-0.4mol%NiO for comparison, were examined for their potential use in hydrogen storage applications, having been fabricated via cryomilling. The effects of NbF5 and CrF3 on hydrogen storage performance were investigated. A microstructure analysis showed that, aside from the main phase Mg, Ni and NiO phases, NbO, MgF2 and Mg2Ni were present in all samples after ball milling, MgH2 and NbH2 were observed in all samples after absorption. The CrF3-containing composite exhibited a good PCT results and a low onset desorption temperature under 0.1 MPa. The NbF5-containing composite exhibited a low absorption temperature of 323 K, a high hydrogen storage capacity of 4.03wt% at 373 K under the hydrogen pressure of 4.0 MPa, and it absorbed 90% of its full hydrogen capacity in 2700 sec and 100% in 5100 sec, it desorbed more than 1.8wt% in 3600 sec under vacuum environment. The CrF3-doped sample exhibited a low onset desorption temperature of 543 K under 0.1 MPa, and a low hysteresis coefficient of 0.25 at 573 K, and lower than 0.2 when temperature was 623 K. NbO and NbH2 played an important role in improving the absorption and desorption performance.

Abstract: In order to study the main insulation of cable terminal hole defect, using visual detection, infrared imaging spectrometer, ultraviolet imaging instrument and pulse current method for the defects of various means such as joint detection. The experimental results show that several ways in which judge cable terminal hole defects that is feasibility, reliability and validity.

Abstract: Based on the systematic analysis of the data of 46 coalbed gas samples, this paper discusses the coal metamorphism’s influence on coaled N2 concentration in Mining Area . The results show that:Yanshanian magma’s "baking" is the main reason for the high N2 concentration; The coal metamorphic degree enhanced, ratios of N2/CH4 present the changing rule of "increase-decrease-increase"; In coking coal stage, the liberation rate of N2 by thermal ammonization is faster than the liberation rate of CH4, so ratios of N2/CH4 increase; In meager coal stage, NH3 generated by thermal ammonization participates in the formation of ammonium illite in the form of NH4+, thus the liberation rate of N2 decreases relatively, so ratios of N2/CH4 decrease; In the lean coal stage, organic nitrogen liberates N2 by thermal cracking effect, N2 concentration increases relatively again, so ratios of N2/CH4 increase.