The inhibitory effect of bipyridine and its cobalt complex on the corrosion behaviour of carbon steel in acidic mediumPleiades Publishing Ltd - Tập 87 - Trang 738-743 - 2014
X. Liu, H. Cao, B. Jiang
The bipyridine (bipy) and its cobalt complex (Co-bipy) were tested as corrosion inhibitors for N80 carbon steel in 0.1 M H2SO4 solution by electrochemical polarization and electrochemical impedance spectroscopy (EIS) method. Scanning electron microscopy (SEM) techniques were used to characterize the mild steel surface. The test results showed that the complex and ligand are mixed-type inhibitors a...... hiện toàn bộ
Synthesis and hydrodynamic and molecular characteristics of N-methacryloylglucosamine N-vinylformamide copolymersPleiades Publishing Ltd - Tập 80 - Trang 777-782 - 2007
G. M. Pavlov, E. V. Korneeva, N. P. Ivanova, O. A. Pavlova, E. F. Panarin
Random 50: 50 N-methacryloylglucosamine-N-vinylformamide copolymers were synthesized, and their hydrodynamic and molecular characteristics were examined. For the copolymers with the molecular weight 70 < M × 10−3 g mol−1 < 570 in 0.2 M NaCl, the Kuhn-Mark-Houwink-Sakurada equations were obtained, which relate the intrinsic viscosity and the translational diffusion and centrifugal sedimentation coe...... hiện toàn bộ
Quinoline Hydrodenitrogenation over NiW/Al-MCM-41 Catalysts with Different Al ContentsPleiades Publishing Ltd - Tập 90 - Trang 2055-2063 - 2018
Fang Guo, Jun Li, Wanxi Li, Xiuling Chen, Hongxue Qi, Xiaoxiao Wang, Yue Yu
Al-MCM-41 materials were prepared with different Al contents and used as supports for NiW catalysts. The supports and catalysts were characterized by XRD, N2 adsorption-desorption, XPS, Raman, H2-TPR techniques. The XPS result showed that the Al added to MCM-41 promoted the dispersion of W and Ni species. The Raman result showed that the Al added to MCM-41 favored the formation of the suitable W s...... hiện toàn bộ
Optimization of Gas-Extraction Recovery of Osmium Tetroxide from Aqueous SolutionsPleiades Publishing Ltd - Tập 76 - Trang 1896-1899 - 2003
L. A. Ushinskaya, M. Yu. Stashok, O. V. Rodinkov, L. N. Moskvin
Dynamic gas extraction of osmium tetroxide from aqueous solutions was studied. The possibility of shortening substantially the duration of the stage of gas-extraction recovery of OsO4 by reasonable choice of temperature, flow rate of extracting gas, and sample volume was also considered. The coefficients of OsO4 distribution between the aqueous and gas phases were determined in the temperature ran...... hiện toàn bộ
Structural Viscosity and Structural Elasticity of Polymer MeltsPleiades Publishing Ltd - Tập 91 - Trang 839-865 - 2018
V. N. Matveenko, E. A. Kirsanov
A new structural approach to describing the non-Newtonian flow of polymer melts is suggested. The structural rheological model is the generalization of the known Casson and Cross rheological models. The use of equations of the structural rheological model allows description of rheological curves of steady-state shear flow and of curves of dynamic moduli without using the power law and the mechanic...... hiện toàn bộ
Novel nanocomposite super absorbent polymers reinforced by clay nanosheetsPleiades Publishing Ltd - Tập 89 - Trang 324-329 - 2016
Zhiling Zhou, Zhaozhong Yang, Chaoping Liu
Super absorbent polymers (SAPs) are of great significance in industry and personal care, etc. The study aims to introduce novel nanocomposite SAPs that are able to uptake very high water content while maintaining excellent strength. The polymers are synthesized by in situ polymerization with the presence of exfoliated montmorillonite (MMT) and trace amount of crosslinkers. SEM images show macropor...... hiện toàn bộ