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关键词： 1-Aminoadamantane   Solid–liquid equilibrium   Solvent effect   Hansen solubility parameter   Thermodynamic modeling  

摘要：

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  A 98-point solubility dataset was established for 1-aminoadamantane.
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  Triplicate measurements gave RSD values of 0.167–5.307%.
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  Modified Apelblat gave the smallest in-sample correlation deviations.
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  A descriptor-based JRK model provided a unified cross-solvent correlation.
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  Apparent dissolution and mixing were endothermic but entropy-favored.

关键词： Deep eutectic solvents   Hydrofluorocarbons   Gas solubility   Density   Viscosity   Diffusivity  

摘要： Regulations requiring the phase down of high global warming potential (GWP) hydrofluorocarbons (HFCs) have motivated the development of efficient separation technologies for HFC blends. Such blends are often near-azeotropic/azeotropic and difficult to separate by fractional distillation. Deep Eutectic Solvents (DESs) have emerged as promising entrainers for extractive distillation of such mixtures. In this work, vapor-liquid equilibrium (VLE), Fickian diffusivity, and saturated liquid density and viscosity (dynamic and kinematic) data were measured for difluoromethane (HFC‑32), pentafluoroethane (HFC‑125), and 1,1,1,2-tetrafluoroethane (HFC‑134a) with pure ethylene glycol (EG) and a DES composed of cholinium chloride (ChCl) and ethylene glycol (EG) in a molar ratio of 1:3 (ChCl:EG=1:3). Vapor-liquid equilibrium (VLE), and saturated liquid density and viscosity measurements were conducted at temperatures from 298.15 to 348.15 K and pressures up to 4.6 MPa using a custom Phase Equilibrium and Thermophysical Properties Apparatus (PETPA). VLE data demonstrate that, in a mole fraction basis, HFC-32 has higher solubility in ChCl:EG (1:3) DES than HFC-125 and HFC-134a at a given temperature and pressure, resulting in high selectivity values required for the effective separation of HFC blends. Fickian diffusion coefficients calculated from gravimetric absorption experiments indicate faster diffusion of HFC‑32 relative to HFC‑125 and HFC‑134a in ChCl:EG (1:3) DES at 298.15 K and similar compositions. The experimental VLE data were well correlated with the PCP-SAFT equation of state for all HFC/EG and HFC/DES systems.

关键词： CO2 absorption   Techno-economic assessment   Process configuration   Energy consumption  

摘要： CO₂ capture is a critical technology for mitigating climate change by reducing greenhouse gas emissions from industrial and power generation sources. This study presents a comprehensive techno-economic assessment of the CO₂ absorption–desorption process using the CESAR 1 solvent (27 wt% AMP and 13 wt% PZ). The analysis was conducted in Aspen Plus v14 using a standard process configuration (Case A) as the base scenario. Several process configurations were investigated to improve performance, including the addition of an intercooling section in the absorber column (Case B), splitting the lean solvent stream (Case C), and splitting the rich solvent stream (Case D). The impact of these configurations on carbon capture level (CCL), energy requirement, and economic performance was systematically evaluated. Results show that a simple solvent switch (Case A) performs poorly (6.22 MJ/kg CO₂) due to column height limits under dilute gas conditions; however, advanced configurations fully unlock the energy-saving benefits of the mixed-amine system. Case B achieved the highest CO₂ removal efficiency of 98.48 % with a reboiler duty of 5.37 MJ/kg CO₂. Case C demonstrated the lowest energy requirement with a reboiler duty of 4.94 MJ/kg CO₂ and a capture efficiency of 95.20 %. Case D further improved system performance with a removal efficiency of 97.22 % and a reboiler duty of 5.38 MJ/kg CO₂. Economic and sensitivity analyses estimated the cost of CO₂ capture, including compression to 30 bar, to range between 77.33 and 85.07 USD/tCO₂. Overall, the results demonstrate process intercooling and solvent splitting, can significantly improve the efficiency and economic viability of CO₂ capture in NGCC systems.

关键词： 1,2-dichloroethane   Catalytic oxidation   Ce10W22O81   Oxygen vacancies   Interfacial interactions   RuOx–ZrOx species  

摘要：

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  A pure-phase Ce₁₀W₂₂O₈₁ support with thermally stable O_v from edge-sharing WO₇–WO₆ distortion was designed.
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  Tunable support O_v governs interfacial interaction with RuO_x–ZrO_x, modulating RuO_x unsaturation and redox capacity.
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  DCE oxidation over RuO_x–ZrO_x/Ce₁₀W₂₂O₈₁ shows nonlinear volcano-shaped dependence on interfacial interaction.
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  A moderate interfacial interaction balances dechlorination and deep oxidation, suppressing PCBs.
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  Stronger interfacial interaction triggers Cl accumulation and Cl₂ activation, causing competitive chlorination.

关键词： Glycerol   Hydrogenolysis   1,3-PDO   Noble metal   Non-noble metal   Future directions  

摘要：

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  This review summarizes recent advances in catalysts for glycerol hydrogenolysis to 1,3-PDO.
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  The dominant reaction mechanisms are systematically outlined.
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  The research progress on diverse catalyst systems is discussed in depth.
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  The catalyst deactivation mechanisms and regeneration methods are analyzed.
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  The current technical bottlenecks are summarized, and future directions for high-performance catalyst design are prospected.

关键词： 17B10   17B65   Affine Lie superalgebra   Takiff superalgebra   Highest weight module   Character formula   Free field realization  

摘要： Let $\tilde{\mathfrak{g}}$ be the affine Lie superalgebra associated with $\mathfrak{g}={\mathfrak{sl}}_{2|1}(\mathbb{C})$. In this paper, we obtain a character formula for all irreducible ℓ-highest weight $\tilde{\mathfrak{g}}$-modules with finite-dimensional weight spaces, together with an explicit construction of these modules. To this end, we establish a necessary and sufficient criterion for the irreducibility of all parabolically induced modules over the corresponding r-th Takiff superalgebra of $\mathfrak{g}$.

关键词： Photocatalytic dehydrogenative cyclization of 1   2-benzenedimethanol   Ruthenium loading   Heterojunction   Lead bismuth oxybromide (PBOB) nanosheets  

摘要：

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  Trace ruthenium-loaded ultrathin lead bismuth oxybromide (Ru/PBOB) composite photocatalyst is successfully fabricated.
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  Ru/PBOB catalyst has highly dispersed Ru species and abundant Ru-PBOB heterojunctions.
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  The Ru/PBOB catalyst achieves 98.7% of 1,2-BM conversion and nearly 100% of phthalide selectivity.
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  Abundant Ru-PBOB heterojunctions and acidic Ru active sites in Ru/PBOB result in enhanced catalytic performances.

关键词： Jet A-1   Micro turbojet engine   Propulsion   Fuel properties   Combustion   Nanofluid   Aviation  

摘要： Nanoparticle-enhanced aviation fuels have attracted increasing attention as an alternative solution due to their potential to improve combustion characteristics, thermal efficiency, and operational performance in aviation propulsion systems. This study experimentally investigates the effects of titanium dioxide nanoparticle additives on the steady-state performance and transient stability of a micro turbojet engine used for unmanned aerial vehicle applications. Titanium dioxide nanoparticles with different average sizes (≈21 nm and < 100 nm) were dispersed into Jet A-1 at concentrations of 100 ppm and 200 ppm using mechanical stirring and ultrasonic homogenization. Density, viscosity, flash point, sulphur content, and chemical structure of resulting nanofuels were analysed. Engine tests were performed under seven operating regimes together with acceleration and deceleration conditions. The addition of titanium dioxide slightly increased density from 0.8183 to 0.8190 g/cm³ and flash point from 39°C to 41°C while remaining within aviation fuel standards. At the lowest regime, specific fuel consumption decreased from 1744 $\mathrm{g}/(\mathrm{k}\mathrm{N}\bullet \mathrm{h})$ for Jet A-1 to 1676 $\mathrm{g}/(\mathrm{k}\mathrm{N}\bullet \mathrm{h})$ for the fuel blend including 200 ppm of 21 nm particles. Combustion temperature decreased by up to 30–50°C at low

关键词： Electrocatalysis   Hydrogen peroxide   Zeolite   High value-added products   Phenol hydroxylation  

摘要：

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  A zeolite-based dual-atomic catalyst with a well-defined coordination structure was achieved.
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  The improved conductivity enabled the electrochemical synthesis of hydrogen peroxide at a current of 5 A.
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  By coupling reaction, an efficient conversion of phenol to hydroquinone and catechol was achieved.

关键词： Hydrogenation   Hydrogen spillover   Co-Co3O4 interface   Dimethyladipate   1, 6-Hexanediol  

摘要： The selective synthesis of high value-added 1,6-hexanediol (HDO) from readily available dimethyl adipate (DMA) holds significant research importance and industrial application prospects. However, non-noble metal catalysts still suffer from low catalytic activity and complex side reaction pathways, which inevitably lead to poor HDO yields. In this work, a highly efficient CoCu/Al₂O₃ hydrogenation catalyst was rationally designed and prepared. Under optimized conditions, an HDO yield of 73.6% was achieved, demonstrating the outstanding catalytic performance of the catalyst. Mechanistic studies reveal that the introduction of Cu plays dual critical roles. It facilitates the reduction of Co species, increases the density of surface Co-Co₃O₄ interfaces, and enhances the adsorption and activation of DMA. Meanwhile, Cu triggers a remarkable hydrogen spillover effect, which continuously supplies active hydrogen to the active interfaces and boosts the efficiency of the hydrogenation reaction. This work proposes a hydrogen spillover-assisted hydrogenation mechanism at metal-oxide interfaces, offering a general strategy for the design of ester hydrogenation catalysts and advancing the mechanistic understanding of hydrogenation catalysis.