Advanced Materials Research Vols. 652-654

Abstract: The corrosion inhibition rate of the new aluminum compound corrosion combining aluminum ion with one or multiplicate additive is high to 78 percent in the environment of 1% chloride sodium. Dealing the carbon steel in salt solution with aluminum compound corrosion and making the film covering it, then dealing it with SN in the close environment, the corrosion inhibition rate to the carbon steel reached above 90%.

Abstract: The reaction parameters about oxidative chemical polymerization of aniline in hydrochloric acid were seriously studied. The optimization parameters of the preparation of polyaniline were obtained: the concentration of aniline is 4％（mass percentage），the molar rate of oxidant((NH4)2S2O8):aniline is 1.2:1~1.3:1, the concentration of dopant is 1mol/L and the influence of solvent. FTIR was employed to character the structure of polyaniline.

Abstract: The key to successful stimulating carbonate reservoir is acid uniformly distribute in entire reservoir, diverting acid technology could effectively solve this problem. In this paper, completed a series of single agent contrast tests, such as corrosion inhibitor optimization evaluation experiment, Fe stabilizer optimization evaluation experiment, diverting agent optimization evaluation experiment, then formed a novel formula of diverting acid system. Meanwhile carried out a series of performance tests of acid system, including acid apparent viscosity test, high temperature dynamic corrosion test, acid dissolving rate test, acid etched conductivity test, acid-rock reaction kinetic parameters test, diverting acid diverting performance test, the results show that this system could keep stability and present well diverting performance in high temperature conditions. Stimulated a well by using this novel diverting acid system, achieved acid uniform distribution in heterogeneous reservoirs, and stimulation ratio was significant.

Abstract: A novel hollow microsphere plastic pigment was prepared by the soap-free seeded emulsion polymerization. This pigment, with polyacrylate as core and with polystyrene as shell (PA/PSt) had hollow structure after dryness. The latex was characterized by transmission electron microscopy (TEM), Fourier transform infrared spectra (FTIR), and particle size analysis. The synthetic pigment was applied in the paper coating, and its influence on the printablility of the coated paper was investigated. The results show that the overall properties of the coated paper can be effectively improved when the clay in the base formulation is replaced by a small amount of hollow microsphere plastic pigment.

Abstract: In this paper, results shows that expanded graphite of 128mL/g could be produced under the nitric acid treatment with the optimum mixture ratio of graphite: HNO3: H2O2: KMnO4 being 1(g):6(ml):2(ml):0.02(g), compared with the 145ml/g under the sulfuric acid treatment (graphite: H2SO4: H2O2 =1(g):3(ml):2 (ml)). The sulfur contents are ~0.10wt.% in EG with nitric acid treatment, and ~0.24wt.% in EG with sulfuric acid treatment, respectively. Therefore, the nitric acid treatment EG has little sulfur, which is greatly demanded in engineering application.

Abstract: In order to meet the need of separating oil from water in the settling tank of the oilfield, ClO₂ treatment for oil-water transition layer in settling tank is introduced. The field test displayed that the technique was achieved by a good performance. For understanding the oxidation and mechanism, compositions of oil-water transition layer were comparatively studied for before/after ClO2-treatment in this paper.The experimental results show that the compositions before and after ClO₂-treatment, including physical structure and chemical composition, were varied in the great extension. The physical structure, consisting of water, oil and solid phase, was reduced to less than 5% of water and 0.5% of solid particle and increased to 95% of oil in layer compared with before-treatment, easily leading to clearly separating water from oil. The chemical composition of iron sulfide and acid insoluble substance in solid phase was decreased to more than 90% while the carbonate was reduced more than 70% . After the treatment, the viscosity reduction of the water phase in the layer was reached to 50% after oxidation demulsification with ClO2. The chemistry was discussed based on the principles and experiments. Due to ClO2 destroying (oxidizing) the rigid interface membrane structure which is supported by natural surfactant, polymer and solid particles with interface-active materials, the action accelerates the separating of water and oil and sedimentation of insoluble residue of acid in the layer. By demonstrating the experimental data and discussion, we can effectively control the oxidation performance of chlorine dioxide, which is very meaningful for oilfield on the aspect of stable production of petroleum.

Abstract: Under the same injection conditions, the compounded system of alkylbenzene sulfonate (ABS) and rhamnoilpid mixed in the proportion of 1:1 has the same effect as ASP (ABS system) on enhanced oil recovery with lower production cost. So the field test of ASP flooding of mixed surfactants with rhamnoilpid was developed the in Nanliuqu 1# injection plant.

Abstract: Lithium iodide/epoxidized natural rubber (LiI/ENR-50) and potassium iodide/epoxized natural rubber (KI/ENR-50) polymer electrolytes (PEs) were prepared via solvent casting. The PEs were characterized using FTIR, DSC and SEM techniques. The observed IR bands shift and the increased in Tg value in both PEs suggest that some interactions may have occurred between the ENR-50 and the respective cations. The appearance of new C=O band at ~1720 cm-1 coupled with the intensification of the OH band in KI/ENR-50 was due to the early degradation of ENR-50 promoted by KI. The kinetic analyses of the thermal degradation of neat ENR-50 and the respective PEs were studied using TG at five different heating rates. Kissinger was employed to obtain the degradation activation energy (Ed). LiI/ENR-50 shows higher Ed as compared to pristine ENR-50 and the Ed increases with increasing LiI loading. The Ed of KI/ENR-50 was observed to be higher than that of pristine ENR-50 when KI is 30 wt %. Thus, LiI retards the degradation of ENR-50 regardless of the wt % LiI added. KI, however, can either retard or catalyzed the degradation of ENR-50 depending on the salt loading.

Abstract: A cationic Gemini surfactant ethane-1, 2-bis (Cetyl dimethyl brominated ammonium), denoted 16-2-16 was synthesized from ethane and Hexadecyl dimethyl amine. The properties of the product were characterized, and the physical and chemical properties were determined. The results showed that the synthetic product was the target product, and its surface tension was 3.4×10-4N/m, and the CMC was 2.2×10-4mol/L at 25°C. At the same time, its synergistic effect with common surfactants was studied; the results showed that the synthetic product had good synergic effect.

Abstract: In this paper, a new method was developed to synthesize betaxolol hydrochloride intermediate (1-[4-(2-Hydroxyethyl) phenoxy]-2, 3-epoxypropane). Based on the acidity difference of phenolic hydroxyl and alcoholic hydroxyl in p-hydroxyphenylethyl alcohol, the betaxolol hydrochloride intermediate was synthesized by selective A.W.Williamson etherification between p-hydroxyphenylethyl alcohol and epichlorohydrin in 18% potassium carbonate-acetone alkalescent solution. The molar ratio of p-hydroxyphenylethyl alcohol and epichlorohydrin was fixed at 1:1.7. FTIR and HPLC analysis revealed that the product purity reached 96% and the yield was 68.18%. This method simplified the synthetic process of betaxolol hydrochloride, which would also result in higher yield and purity of betaxolol hydrochloride products.