KPb₂(PO₃)₅shows moderate powder SHG intensities which are one half times that of KDP with a UV cut-off edge at 177 nm.

The first borate carbonate UV nonlinear optical material Pb7O(OH)3(CO3)3(BO3) was hydrothermally synthesized, which features a (3,9)-connected IrSi3-like structure constructed by Pb7O(OH)3(BO3) units and carbonates. This compound exhibits large second-harmonic generation (SHG) response about 4.5 times that of KH2PO4 (KDP), attributed to synergistic interactions between the stereoeffect Pb(II) cations coparallel BO3 CO3 triangles groups.

Two polyphosphates containing two types of polymerization the [PO4] groups, Rb3Sr2P7O21 and Cs3Sr2P7O21, were grown through a spontaneous nucleation method. Single-crystal X-ray diffraction data collected in order to determine their structures. Interestingly, is first example kinds [PO3]∞ linear chains coexisting one phosphate structure. However, structure isolated [P4O12] ring 1D chain can be observed, which also rare phosphates. After careful structural analysis, alkali-metal cations have...

Regulating the crystal structure by A-site cation substitution is one of effective methods to explore high-performance nonlinear optical (NLO) materials. Herein, two non-centrosymmetric (NCS) compounds, α-MZnPO4 (M = Li, K) with short UV absorption edges 221 and 225 nm, are obtained performing method. It noteworthy that α-LiZnPO4 (α-LZPO) achieves >10 times second harmonic generation (SHG) response (2.3 × KDP) enhancement compared α-KZnPO4 (α-KZPO) (0.2 KDP), which only case among phosphates...

Emissions of CO2 and industrial solid waste are rising year by year, threatening human survival development. Wet mineralization alkaline is an effective way to mineralize CO2. In order study the carbon sequestration performance reaction characteristics fixation direct wet carbide slag, based on a semi-closed test setup. The effect efficiency slag under conditions liquid-solid ratio 5-20 mL/g gas flow rate 200-1100 mL/min was investigated. A surface coverage model used mechanism. results show...

As an important monomer raw material to produce biodegradable plastics and NMP for positive electrode coatings in new energy batteries, 1,4-butanediol (BDO) is of great significance solving white pollution protecting the ecological environment. The conventional distillation process BDO has a high consumption, low heat recovery capacity cost. This study aims achieve conservation, consumption reduction, reductions both investment operational costs production process. To increase utilization...

Three new mixed-alkaline borates Na2M2B20O32 (M = Rb, Cs) and Li4Cs4B40O64 with unique structures were synthesized by the spontaneous nucleation method, their determined single-crystal X-ray diffraction. The B-O networks of are constructed two independent interpenetrating three-dimensional (3D) frameworks, which is first case in anhydrous borate systems. In addition, shows high polymerization a fundamental building block B40O77. Meanwhile, detailed structure comparisons containing cation...

By the application of cation substitution, five new members cyclophosphates, RbCdP3O9, CsPbP3O9, CsSrP3O9, RbMgP3O9, and RbCaP3O9, were obtained by a high-temperature melt method structurally analyzed. The compounds have identical stoichiometries, all them feature three-dimensional network, which consists MIIO6 (MII = Cd, Mg, Ca, Pb, Sr) octahedra cyclic P3O9 units, while alkali-metal atoms are located within network. However, RbCdP3O9 CsPbP3O9 belong to asymmetric space groups P6̅ c2 Pna21,...

The nonlinear-optical (NLO) materials with second-harmonic-generation (SHG) response need to crystallize in the noncentrosymmetric space group. It is very difficult control synthetic conditions solely form a phase for and centrosymmetric conformations. Herein, we found that temperature halogen anion play an important role during formation procedure of pure or halogen-based family coordination polymers yield hybrid phase-matching SHG as well inherit primary excellent photonic property organic...

LiGeBO₄is found to be a material that can balance large band gap (>6.2 eV) and strong SHG coefficient (2 × KDP), which is rarely seen in tetrahedral-based crystals.

A new metal polyphosphate, α-CsBa2(PO3)5, exhibiting the first example of a linear P-O-P bond angle in one-dimensional (PO3)∞ chain has been reported. Interestingly, α → β phase transition occurs CsBa2(PO3)5 along with bonds varying from to λ-shape, suggesting that α-CsBa2(PO3)5 unfavorable is more stable at ambient temperature.

PbPS₃ with isolated ethane-like [P₂S₆]⁴⁻ units exhibits good optical properties and shows promising application as a birefringent material.

In order to response the "double carbon" strategy for reducing emissions, chemical production processes were optimized lower amount of utility work and equipment investment expenses with increasing system's capacity heat recovery. A sensitivity analysis energy efficiency pinch technique performed on distillation purification 30 kt/a isopropyl acetate (IPAC) process by using simulation software Aspen Plus. The IPAC refining tower optimization results show that purity refined could be reached...

The mechanism of the effect MgO on microstructure depolymerization Zhundong coal ash under condition different CaO contents was studied using molecular dynamics simulation and experimental methods.

Polymer <bold>1</bold> was prepared as nanoparticles and added to the culture media, bright red fluorescence observed in SH-SY5Y cells.

Acetylene is an important chemical raw material produced by the reaction of CaC2 and water. During synthesis process calcium carbide, coke formed from highly alkaline coal limestone results in a large amount ash, which not only increases energy consumption but also significantly affects purity CaC2. In order to explore effect ash on CaC2, first, was synthesized high-temperature solid-state reaction, its identified. XRD indicate that main phase this crystal with space group I4/mmm. To further...

The contents of alkali and alkaline earth metals are higher in Zhundong coal, there serious problems slagging fouling during the combustion process. Therefore, it is great significance to reveal mechanism boiler coal. In this paper, first-principle calculations based on density functional theory used study competition metal oxides process coal by establishing Na2O(110)/CaO(100)-SiO2(100) double-layer interface model. results show that bond lengths surface Na2O(110) CaO(100) with SiO2(100)...