A5076057630- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Energetic Materials and Combustion
- Ionic liquids properties and applications
- Thermal and Kinetic Analysis
- Geological and Geochemical Analysis
- Carbon dioxide utilization in catalysis
- Geology and Paleoclimatology Research
- Combustion and Detonation Processes
- Chemical Reactions and Mechanisms
- Isotope Analysis in Ecology
- Coral and Marine Ecosystems Studies
- High-pressure geophysics and materials
- Geochemistry and Geologic Mapping
- Crystallography and molecular interactions
- Paleontology and Stratigraphy of Fossils
- Cephalopods and Marine Biology
- Catalysis for Biomass Conversion
- Biometric Identification and Security
- Phase Equilibria and Thermodynamics
- CO2 Reduction Techniques and Catalysts
- Chemical Synthesis and Reactions
- earthquake and tectonic studies
- Extraction and Separation Processes
- Planetary Science and Exploration
Chinese Academy of Sciences
2015-2025
Guangzhou Institute of Geochemistry
2018-2025
Institute of Process Engineering
2014-2024
Zhengzhou Institute of Emerging Industrial Technology
2017-2024
Gansu Provincial Science and Technology Department
2024
Henan University of Technology
2024
China Mobile (China)
2023-2024
China Electronic Information Industry Development
2021-2024
Henan University
2024
State Key Laboratory of Multiphase Complex Systems
2018-2023
A new type of "task specific ionic liquid", tetrabutylphosphonium amino acid [P(C4)4][AA], was synthesized by the reaction hydroxide [P(C4)4][OH] with acids, including glycine, L-alanine, L-beta-alanine, L-serine, and L-lysine. The liquids produced were characterized NMR, IR spectroscopies, elemental analysis, their thermal decomposition temperature, glass transition electrical conductivity, density, viscosity recorded in detail. [P(C4)4][AA] supported on porous silica gel effected fast...
A series of 20 dual amino-functionalised phosphonium ionic liquids, (3-aminopropyl)tributylphosphonium amino acid salts ([aP(4443)][AA], in which [AA](-) = [Ala](-), [Arg](-), [Asn](-), [Asp](-), [Cys](-), [Gln](-), [Glu](-), [Gly](-), [His](-), [Ile](-), [Leu](-), [Lys](-), [Met](-), [Phe](-), [Pro](-), [Ser](-), [Thr](-), [Trp](-), [Tyr](-) and [Val](-)), has been prepared. Their physicochemical properties, such as density, viscosity, glass transition thermal decomposition temperatures...
In propellant systems, fuels of choice continue to be hydrazine and its derivatives, even though they comprise a class acutely carcinogenic toxic substances which exhibit rather high vapor pressures require expensive handling procedures costly safety precautions. Only recently (2008), ionic liquids (salts with melting points less than 100 °C) the dicyanamide anion were shown hypergolic properties (instantaneous ignition when contacted oxidizers (100 % nitric acid, WFNA)). Such tend have low...
Explosive though stable: Dicyanoborate-based ionic liquids are hypergolic fuels in the presence of white fuming nitric acid as oxidizer (see high-speed picture ignition process). With long liquid ranges, low viscosities, and short delay times, these thermally hydrolytically stable appear to be very promising substitutes for hydrazine its derivatives bipropellants. Detailed facts importance specialist readers published "Supporting Information". Such documents peer-reviewed, but not...
Abstract High‐density energetic salts that are comprised of nitrogen‐rich cations and the 3,4,5‐trinitropyrazolate anion were synthesized in high yield by neutralization or metathesis reactions. The resulting fully characterized 1 H, 13 C NMR, IR spectroscopy; differential scanning calorimetry; elemental analysis. Additionally, structures 3,5‐diaminotriazolium triaminoguanidinium 3,4,5‐trinitropyrazolates confirmed single‐crystal X‐ray diffraction. Based on measured densities calculated...
The energetic derivatives of 5-nitro-1,2,3-2H-triazole, which include 2-(methyl or amino)-4-(nitramino, azido, nitro)-5-nitro-1,2,3-2H-triazoles, were prepared in moderate yields, and confirmed with NMR IR spectroscopy, elemental analysis. Their key properties, viz., melting decomposition temperatures, densities, detonation pressures velocities, impact sensitivities, measured calculated. Among the new derivatives, 2-amino-4,5-dinitro-1,2,3-2H-triazole exhibits properties (Tm, 94 °C; Td, 190...
In this study, a high-precision secondary ion mass spectrometry (SIMS) zircon oxygen isotope ratio analytical protocol is described. The analysis conducted using Cameca IMS 1280-HR at the SIMS Laboratory of Guangzhou Institute Geochemistry, Chinese Academy Sciences (GIGCAS). Four reference zircons (91,500, Qinghu, TEMORA 2 and Penglai) have been chosen to evaluate reproducibility (precision) accuracy. An identical used for analyses, with unchanged instrumental parameters beam intensities...
Remote sensing observations have shown that the far side of Moon (lunar farside) has different geology and rock composition to those nearside, including abundances potassium, rare earth elements, phosphorus (collectively known as KREEP). The Chang’e-6 (CE-6) spacecraft collected samples from South Pole–Aitken (SPA) basin on farside brought them Earth. We used lead-lead rubidium-strontium isotope systems date low-titanium basalt in a CE-6 sample, finding consistent age 2830 (±5) million...
Recently extensive research has focused on replacing toxic hydrazine, monomethylhydrazine, and unsymmetrical dimethylhydrazine as liquid propellant fuels. 2-Azido-N,N-dimethylethylamine (1) is a good candidate to replace hydrazine derivatives in certain hypergolic fuel applications. Energetic ionic liquids that contain the 2-azido-N,N,N-trimethylethylammonium cation with nitrocyanamide, dicyanamide, dinitramide, or azide anion have been successfully synthesized yields by metathesis...
Abstract 4‐Nitramino‐3,5‐dinitropyrazole was prepared and stabilized through the formation of its ammonium salt. With selected cations, 14 nitrogen‐rich energetic salts were synthesized in high yield by metathesis reactions. These fully characterized 1 H, 13 C NMR, IR spectroscopy elemental analysis. Additionally, structures ammonium, 3,4,5‐triaminotriazolium, biguanidinium confirmed single‐crystal X‐ray diffraction. Based on experimental calculated values, 4‐nitramino‐3,5‐dinitropyrazolate...
Energetic salts based on the 4-amino-3,5-dinitropyrazolate anion and selected nitrogen-rich cations were prepared in high yield by neutralization or metathesis reactions. Their key properties of resulting energetic salts, such as melting point, thermal stability (169–303 °C), density (1.54–1.84 g cm−3), impact sensitivity (>60 J), heat formation, detonation pressure (20.99–32.55 GPa) velocity (7712–8751 m s−1), measured calculated. As highly insensitive materials, 9 (32.55 GPa, 8743 s−1) 11...
3,4,5-Trinitropyrazole-1-ol and its nitrogen-rich salts were synthesized well characterized by 1H, 13C NMR (some with 15N NMR), IR spectroscopy, elemental analysis. Additionally, the structures of ammonium triazolium 3,4,5-trinitropyrazole-olates confirmed single-crystal X-ray diffraction. With respect to measured or calculated properties, such as thermal stability (Td, 118–186 °C), density (1.72–1.90 g cm−3), detonation performance (P, 28.77–36.40 GPa; vD, 8175–8676 m s−1), impact...
It is very difficult to directly spin the lignocellulose without pretreatment. Ionic liquids (ILs) are promising solvent dissolve prepare cellulose fiber. However, degree of polymerization(DP)is reduced when dissolved in ILs, and lignin removal rate low. The elongation at break tensile strength fibers obtained by spinning ILs poor. In this paper, preparing fiber from based on dissolving corn stalk via [C4mim]Cl-L-arginine binary system achieved. shows that can reach 92.35% purity 85.32%...
In this work, the solubility of CO2 in sulfonate ionic liquids (ILs), such as trihexyl (tetradecyl) phosphonium dodecylbenzenesulfonates ([P6,6,6,14][C12H25PhSO3]) and mesylate ([P6,6,6,14][MeSO3]), was determined at temperatures ranging from (305 to 325) K pressures (4 9) MPa. It found that difference two kinds ILs is not dramatic on basis molality. The [P6,6,6,14][MeSO3] higher than [P6,6,6,14][C12H25PhSO3]. data were correlated by means extended Henry's law, thermodynamic functions,...
Highly dense nitrogen-rich ionic compounds are potential high-performance energetic materials for use in military and industrial venues. Guanazinium salts with promising anions a family of based on cations the 6-nitroamino-2,4-diazido[1,3,5]triazine anion (NADAT) were prepared fully characterized by elemental analysis, IR spectroscopy, (1)H NMR (13)C differential scanning calorimetry (DSC). The crystal structures neutral NADAT (2) its biguanidinium salt 5 determined single-crystal X-ray...
Abstract N , ‐Dimethylhydrazinium dicyanamide and nitrocyanamide ionic liquids (ILs) were prepared by quaterization of ‐dimethylhydrazine with alkyl halides followed metathesis reactions silver or nitrocyanamide. The key physicochemical properties, such as melting point decomposition temperatures, density, viscosity, heat formation, detonation pressure velocity, specific impulse measured/calculated. impact anions alkyl‐substituted cations on these properties is demonstrated. Droplet tests...
Abstract Two series of boronium‐cation‐based ionic liquids were prepared and fully characterized by 1 H, 13 C, 11 B NMR infrared spectroscopy, differential scanning calorimetry (DSC), elemental analysis. The structure bis(1‐methyl‐1 H ‐imidazole‐3‐yl)dihydroboronium dicyanoborohydride ( 5 a ) was determined single‐crystal X‐ray diffraction. densities these range from 1.05 to 1.28 g cm −3 , the heats formation, predicted on basis Gaussian 03 calculations, fall between −164.6 430.5 kJ mol −1 ....
A 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20)/graphene foam (GF) composite with a guest–host architecture was prepared as high energy material low sensitivity.
Abstract Silicate liquid immiscibility was a common mechanism during the late-stage evolution of lunar basaltic magmas, which produced co-existing and immiscible Si- Fe-rich melts. However, relationship between silicate granitic rocks is debated. In this study, we investigated Si-rich melt inclusions hosted in fayalite fragments from soil returned by Chang’e 5 mission. These have high SiO2 (76.4 wt.%), Al2O3 (11.1 K2O (5.8 low FeO (2.8 TiO2 (0.42 MgO (0.02 wt.%) contents. The texture...