A5026370178- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- Enhanced Oil Recovery Techniques
- Metal complexes synthesis and properties
- Metal-Organic Frameworks: Synthesis and Applications
- Advanced Sensor and Energy Harvesting Materials
- Dielectric materials and actuators
- Petroleum Processing and Analysis
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Crystallography and molecular interactions
- Synthesis and Characterization of Heterocyclic Compounds
- Crystal structures of chemical compounds
- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- CO2 Sequestration and Geologic Interactions
- Surfactants and Colloidal Systems
- Advanced Polymer Synthesis and Characterization
- Conducting polymers and applications
- Rheology and Fluid Dynamics Studies
- Asymmetric Synthesis and Catalysis
- Organic and Molecular Conductors Research
- Geological Modeling and Analysis
Oil and Gas Research Institute
2017
Northwest University
2007-2010
With the simple dinuclear Zn–Nd complex [ZnNdL(H2O)(NO3)3] (1) (H2L = N,N′-bis(3-methoxysalicylidene)ethylene-1,2-diamine) as precursor, tetranuclear [Zn2Nd2L2(4,4′-bpy)(NO3)6]·Et2O (2) and [Zn2Nd2L2(4,4′-bpe)]·2H2O (3) (4,4′-bpy 4,4′-bipyridine, 4,4′-bpe trans-bis(4-pyridyl)ethylene) complexes are formed: suitable choice of bidentate linkers could construct multinuclear heterometallic 3d–4f Schiff-base with improved luminescent properties, controlling linker character shows a potentially...
With the Zn–Schiff-base [ZnL11(Py)] or [ZnL22(Py)] from simple Salen-type Schiff-base ligand H22L11 H22L22 (H22L11: N,N′-bis(salicylidene)ethylene-1,2-diamine; H22L22: N,N′-bis(salicylidene)phenylene-1,2-diamine) without outer O2O2 portion as precursor, two series of eight trinuclear Zn2Ln arrayed complexes (Ln = Nd (1 5), Yb (2 6), Er (3 7) Gd (4 8)) have been obtained by further reaction with Ln(NO3)3·6H2O, respectively. The results photophysical studies show that strong and characteristic...
Abstract Two heterobimetallic Zn‐Nd phenylene‐bridged Schiff‐base ligands complexes [ZnNd L 1 (Py)(NO 3 ) ] ( and [Zn 2 Nd(Py)(NO ]·MeCN (Py = pyridine, H N,N′ ‐bis‐ (3‐methoxy‐salicylidene)phenylene‐1,2‐diamine, ‐bis‐5‐bromo‐3‐methoxy‐salicylidene)phenylene‐1,2‐diamine) were obtained. Both structurally characterized by X‐ray crystallography, their near‐infrared (NIR) luminescent properties determined. For the two complexes, occupation of pyridine at axial position 3d Zn 2+ ions could...
Three mononuclear complexes [AgL2 · X] (L = 2-(2′-pyridyl)-quinoxaline, X , 1, 2, and 3) one 1-D organic–inorganic coordination polymer [Ag2L(CF3CO2)2] n (4) were obtained. Anions of are non-coordinated counter-ions (AgL2)+ cations with bidentate-chelated L (Mode I in scheme 1), while two bridging anions connect adjacent (Ag2L)2+ mixed bidentate–monodentate II leading to formation a infinite linear chain network. Complicated supramolecular interactions involving the all four result...
Abstract Natural gas foam can be used for mobility control and channel blocking during natural injection enhanced oil recovery, in which stable foams need to at high reservoir temperature, pressure water salinity conditions field applications. In this study, the performance of methane (CH 4 ) stabilized by different types surfactants was tested using a temperature meter surfactant screening selection, including anionic (sodium dodecyl sulfate), non‐anionic (alkyl polyglycoside), zwitterionic...
Abstract H-3 Block is an ultra-low permeability reservoir in Changqing oil field, China which had been waterflooded from 2009 and was switched to CO2 flooding 2013 due excess water production. However, the nature fractures NE-SW region have resulted early breakthrough poor production performance. The investigation of performance method control becomes a key continue CO2-EOR project. Outcrop cores are used perform series experiments at conditions pressure, temperature formation salinity....
Partially hydrolyzed polyacrylamide (HPAM) is the most widely used polymer for oil recovery. Its thickening ability was severely affected in high salinity reservoirs. To improve viscosity reservoir, a twin-tailed amphiphilic P(AM/AMPS/DtC18) developed by radical copolymerization method using AM, AMPS and DtC18 monomers, abbreviated as PAAD18. The structure characterized Fourier transform infrared spectroscopy (FTIR) H Nuclear Magnetic Resonance Spectra (1H NMR). relationship between its...
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In the title molecule, C21H19N3O4, benzene rings of two ortho 2-hydroxy-3-methoxybenzylideneamine substituents are twisted with respect to central pyridine ring by 29.4 (1) and 41.4 (1)°.
Treatment of oily sludge in Changqing oilfield, originating from producer/injector well field and settling tanks united stations, has ever been an obsession the development oilfield for environmental concerns.In this article, some merits sludge, including salinityresistance, shearing-resistance matchability with formation, are analysed.In background present stage where numbers high water-cut producers increasing, point using as conformance-control agents is put forward.